gdal

package module
Version: v0.0.0-...-100dbac Latest Latest
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Published: Apr 27, 2020 License: MIT Imports: 6 Imported by: 0

README

-------------
About
-------------

The gdal.go package provides a go wrapper for GDAL, the Geospatial Data Abstraction Library. More information about GDAL can be found at http://www.gdal.org

-------------
Installation
-------------

1) go get github.com/lukeroth/gdal
2) Set the GDAL library and include directories to the appropriate locations.
3) go build

-------------
Compatibility
-------------

This software has been tested most recently on Ubuntu 18.10, GDAL version 2.3.2.

-------------
Examples
-------------

-------------
Status (3/08/2019)
-------------

The majority of GDAL functionality exposed by the C API is available, as well as much of the OGR API.
Most functionality is not covered by tests or benchmarks.

Documentation

Overview

Package gdal provides a wrapper for GDAL, the Geospatial Data Abstraction Library. This C/C++ library provides access to a large number of geospatial raster data formats. It also contains a wrapper for the related OGR Simple Feature Library which provides similar functionality for vector formats.

Limitations

Some less oftenly used functions are not yet implemented. The majoriry of these involve style tables, asynchronous I/O, and GCPs.

The documentation is fairly limited, but the functionality fairly closely matches that of the C++ api.

This wrapper has most recently been tested on Windows7, using the MinGW32_x64 compiler and GDAL version 1.11.

Usage

A simple program to create a georeferenced blank 256x256 GeoTIFF:

package main

import (
	"fmt"
	"flag"
	gdal "github.com/lukeroth/gdal_go"
)

func main() {
	flag.Parse()
	filename := flag.Arg(0)
	if filename == "" {
		fmt.Printf("Usage: test_tiff [filename]\n")
		return
	}
	buffer := make([]uint8, 256 * 256)

	driver, err := gdal.GetDriverByName("GTiff")
	if err != nil {
		fmt.Println(err.Error())
		return
	}

	dataset := driver.Create(filename, 256, 256, 1, gdal.Byte, nil)
	defer dataset.Close()

	spatialRef := gdal.CreateSpatialReference("")
	spatialRef.FromEPSG(3857)
	srString, err := spatialRef.ToWKT()
	dataset.SetProjection(srString)
	dataset.SetGeoTransform([]float64{444720, 30, 0, 3751320, 0, -30})
	raster := dataset.RasterBand(1)
	raster.IO(gdal.Write, 0, 0, 256, 256, buffer, 256, 256, 0, 0)
}

More examples can be found in the ./examples subdirectory.

Index

Constants

View Source
const (
	VERSION_MAJOR = int(C.GDAL_VERSION_MAJOR)
	VERSION_MINOR = int(C.GDAL_VERSION_MINOR)
	VERSION_REV   = int(C.GDAL_VERSION_REV)
	VERSION_BUILD = int(C.GDAL_VERSION_BUILD)
	VERSION_NUM   = int(C.GDAL_VERSION_NUM)
	RELEASE_DATE  = int(C.GDAL_RELEASE_DATE)
	RELEASE_NAME  = string(C.GDAL_RELEASE_NAME)
)
View Source
const (
	/** Flag returned by GDALGetMaskFlags() to indicate that all pixels are valid */
	GMF_ALL_VALID = 0x01
	/** Flag returned by GDALGetMaskFlags() to indicate that the mask band is
	 * valid for all bands */
	GMF_PER_DATASET = 0x02
	/** Flag returned by GDALGetMaskFlags() to indicate that the mask band is
	 * an alpha band */
	GMF_ALPHA = 0x04
	/** Flag returned by GDALGetMaskFlags() to indicate that the mask band is
	 * computed from nodata values */
	GMF_NODATA = 0x08

	/** Flag returned by GDALGetDataCoverageStatus() when the driver does not
	 * implement GetDataCoverageStatus(). This flag should be returned together
	 * with GDAL_DATA_COVERAGE_STATUS_DATA */
	GDAL_DATA_COVERAGE_STATUS_UNIMPLEMENTED = 0x01

	/** Flag returned by GDALGetDataCoverageStatus() when there is (potentially)
	 * data in the queried window. Can be combined with the binary or operator
	 * with GDAL_DATA_COVERAGE_STATUS_UNIMPLEMENTED or
	 * GDAL_DATA_COVERAGE_STATUS_EMPTY */
	GDAL_DATA_COVERAGE_STATUS_DATA = 0x02

	/** Flag returned by GDALGetDataCoverageStatus() when there is nodata in the
	 * queried window. This is typically identified by the concept of missing block
	 * in formats that supports it.
	 * Can be combined with the binary or operator with
	 * GDAL_DATA_COVERAGE_STATUS_DATA */
	GDAL_DATA_COVERAGE_STATUS_EMPTY = 0x04
)
View Source
const (
	Unknown  = DataType(C.GDT_Unknown)
	Byte     = DataType(C.GDT_Byte)
	UInt16   = DataType(C.GDT_UInt16)
	Int16    = DataType(C.GDT_Int16)
	UInt32   = DataType(C.GDT_UInt32)
	Int32    = DataType(C.GDT_Int32)
	Float32  = DataType(C.GDT_Float32)
	Float64  = DataType(C.GDT_Float64)
	CInt16   = DataType(C.GDT_CInt16)
	CInt32   = DataType(C.GDT_CInt32)
	CFloat32 = DataType(C.GDT_CFloat32)
	CFloat64 = DataType(C.GDT_CFloat64)
)
View Source
const (
	// Read only (no update) access
	ReadOnly = Access(C.GA_ReadOnly)
	// Read/write access.
	Update = Access(C.GA_Update)
)
View Source
const (
	// Read data
	Read = RWFlag(C.GF_Read)
	// Write data
	Write = RWFlag(C.GF_Write)
)
View Source
const (
	OFReadOnly      = OpenFlag(C.GDAL_OF_READONLY)
	OFUpdate        = OpenFlag(C.GDAL_OF_UPDATE)
	OFShared        = OpenFlag(C.GDAL_OF_SHARED)
	OFVector        = OpenFlag(C.GDAL_OF_VECTOR)
	OFRaster        = OpenFlag(C.GDAL_OF_RASTER)
	OFVerbose_Error = OpenFlag(C.GDAL_OF_VERBOSE_ERROR)
)
View Source
const (
	CI_Undefined      = ColorInterp(C.GCI_Undefined)
	CI_GrayIndex      = ColorInterp(C.GCI_GrayIndex)
	CI_PaletteIndex   = ColorInterp(C.GCI_PaletteIndex)
	CI_RedBand        = ColorInterp(C.GCI_RedBand)
	CI_GreenBand      = ColorInterp(C.GCI_GreenBand)
	CI_BlueBand       = ColorInterp(C.GCI_BlueBand)
	CI_AlphaBand      = ColorInterp(C.GCI_AlphaBand)
	CI_HueBand        = ColorInterp(C.GCI_HueBand)
	CI_SaturationBand = ColorInterp(C.GCI_SaturationBand)
	CI_LightnessBand  = ColorInterp(C.GCI_LightnessBand)
	CI_CyanBand       = ColorInterp(C.GCI_CyanBand)
	CI_MagentaBand    = ColorInterp(C.GCI_MagentaBand)
	CI_YellowBand     = ColorInterp(C.GCI_YellowBand)
	CI_BlackBand      = ColorInterp(C.GCI_BlackBand)
	CI_YCbCr_YBand    = ColorInterp(C.GCI_YCbCr_YBand)
	CI_YCbCr_CbBand   = ColorInterp(C.GCI_YCbCr_CbBand)
	CI_YCbCr_CrBand   = ColorInterp(C.GCI_YCbCr_CrBand)
	CI_Max            = ColorInterp(C.GCI_Max)
)
View Source
const (
	// Grayscale (in GDALColorEntry.c1)
	PI_Gray = PaletteInterp(C.GPI_Gray)
	// Red, Green, Blue and Alpha in (in c1, c2, c3 and c4)
	PI_RGB = PaletteInterp(C.GPI_RGB)
	// Cyan, Magenta, Yellow and Black (in c1, c2, c3 and c4)
	PI_CMYK = PaletteInterp(C.GPI_CMYK)
	// Hue, Lightness and Saturation (in c1, c2, and c3)
	PI_HLS = PaletteInterp(C.GPI_HLS)
)
View Source
const (
	MD_AREA_OR_POINT = string(C.GDALMD_AREA_OR_POINT)
	MD_AOP_AREA      = string(C.GDALMD_AOP_AREA)
	MD_AOP_POINT     = string(C.GDALMD_AOP_POINT)
)

"well known" metadata items.

View Source
const (
	DMD_LONGNAME           = string(C.GDAL_DMD_LONGNAME)
	DMD_HELPTOPIC          = string(C.GDAL_DMD_HELPTOPIC)
	DMD_MIMETYPE           = string(C.GDAL_DMD_MIMETYPE)
	DMD_EXTENSION          = string(C.GDAL_DMD_EXTENSION)
	DMD_CREATIONOPTIONLIST = string(C.GDAL_DMD_CREATIONOPTIONLIST)
	DMD_CREATIONDATATYPES  = string(C.GDAL_DMD_CREATIONDATATYPES)

	DCAP_CREATE     = string(C.GDAL_DCAP_CREATE)
	DCAP_CREATECOPY = string(C.GDAL_DCAP_CREATECOPY)
	DCAP_VIRTUALIO  = string(C.GDAL_DCAP_VIRTUALIO)
)
View Source
const (
	GRA_NearestNeighbour = ResampleAlg(0)
	GRA_Bilinear         = ResampleAlg(1)
	GRA_Cubic            = ResampleAlg(2)
	GRA_CubicSpline      = ResampleAlg(3)
	GRA_Lanczos          = ResampleAlg(4)
	GRA_Average          = ResampleAlg(5)
	GRA_Mode             = ResampleAlg(6)

	GRA_Max = ResampleAlg(8)
	GRA_Min = ResampleAlg(9)
	GRA_Med = ResampleAlg(10)
	GRA_Q1  = ResampleAlg(11)
	GRA_Q3  = ResampleAlg(12)
)
View Source
const (
	GFT_Integer = RATFieldType(C.GFT_Integer)
	GFT_Real    = RATFieldType(C.GFT_Real)
	GFT_String  = RATFieldType(C.GFT_String)
)
View Source
const (
	GFU_Generic    = RATFieldUsage(C.GFU_Generic)
	GFU_PixelCount = RATFieldUsage(C.GFU_PixelCount)
	GFU_Name       = RATFieldUsage(C.GFU_Name)
	GFU_Min        = RATFieldUsage(C.GFU_Min)
	GFU_Max        = RATFieldUsage(C.GFU_Max)
	GFU_MinMax     = RATFieldUsage(C.GFU_MinMax)
	GFU_Red        = RATFieldUsage(C.GFU_Red)
	GFU_Green      = RATFieldUsage(C.GFU_Green)
	GFU_Blue       = RATFieldUsage(C.GFU_Blue)
	GFU_Alpha      = RATFieldUsage(C.GFU_Alpha)
	GFU_RedMin     = RATFieldUsage(C.GFU_RedMin)
	GFU_GreenMin   = RATFieldUsage(C.GFU_GreenMin)
	GFU_BlueMin    = RATFieldUsage(C.GFU_BlueMin)
	GFU_AlphaMin   = RATFieldUsage(C.GFU_AlphaMin)
	GFU_RedMax     = RATFieldUsage(C.GFU_RedMax)
	GFU_GreenMax   = RATFieldUsage(C.GFU_GreenMax)
	GFU_BlueMax    = RATFieldUsage(C.GFU_BlueMax)
	GFU_AlphaMax   = RATFieldUsage(C.GFU_AlphaMax)
	GFU_MaxCount   = RATFieldUsage(C.GFU_MaxCount)
)
View Source
const (
	GT_Unknown               = GeometryType(C.wkbUnknown)
	GT_Point                 = GeometryType(C.wkbPoint)
	GT_LineString            = GeometryType(C.wkbLineString)
	GT_Polygon               = GeometryType(C.wkbPolygon)
	GT_MultiPoint            = GeometryType(C.wkbMultiPoint)
	GT_MultiLineString       = GeometryType(C.wkbMultiLineString)
	GT_MultiPolygon          = GeometryType(C.wkbMultiPolygon)
	GT_GeometryCollection    = GeometryType(C.wkbGeometryCollection)
	GT_None                  = GeometryType(C.wkbNone)
	GT_LinearRing            = GeometryType(C.wkbLinearRing)
	GT_Point25D              = GeometryType(C.wkbPoint25D)
	GT_LineString25D         = GeometryType(C.wkbLineString25D)
	GT_Polygon25D            = GeometryType(C.wkbPolygon25D)
	GT_MultiPoint25D         = GeometryType(C.wkbMultiPoint25D)
	GT_MultiLineString25D    = GeometryType(C.wkbMultiLineString25D)
	GT_MultiPolygon25D       = GeometryType(C.wkbMultiPolygon25D)
	GT_GeometryCollection25D = GeometryType(C.wkbGeometryCollection25D)
)
View Source
const (
	FT_Integer       = FieldType(C.OFTInteger)
	FT_IntegerList   = FieldType(C.OFTIntegerList)
	FT_Real          = FieldType(C.OFTReal)
	FT_RealList      = FieldType(C.OFTRealList)
	FT_String        = FieldType(C.OFTString)
	FT_StringList    = FieldType(C.OFTStringList)
	FT_Binary        = FieldType(C.OFTBinary)
	FT_Date          = FieldType(C.OFTDate)
	FT_Time          = FieldType(C.OFTTime)
	FT_DateTime      = FieldType(C.OFTDateTime)
	FT_Integer64     = FieldType(C.OFTInteger64)
	FT_Integer64List = FieldType(C.OFTInteger64List)
)
View Source
const (
	J_Undefined = Justification(C.OJUndefined)
	J_Left      = Justification(C.OJLeft)
	J_Right     = Justification(C.OJRight)
)

Variables

View Source
var (
	ErrDebug   = errors.New("Debug Error")
	ErrWarning = errors.New("Warning Error")
	ErrFailure = errors.New("Failure Error")
	ErrFatal   = errors.New("Fatal Error")
	ErrIllegal = errors.New("Illegal Error")
)

Functions

func BoolToCInt

func BoolToCInt(in bool) (out C.int)

Convert a go bool to a C int

func CIntSliceToInt

func CIntSliceToInt(data []C.int) []int

Safe array conversion

func CUIntBigSliceToInt

func CUIntBigSliceToInt(data []C.GUIntBig) []int

func CleanupOGR

func CleanupOGR()

Clean up all OGR related resources

func CleanupSR

func CleanupSR()

Cleanup cached SRS related memory

func ComputeMedianCutPCT

func ComputeMedianCutPCT(
	red, green, blue RasterBand,
	colors int,
	ct ColorTable,
	progress ProgressFunc,
	data interface{},
) int

Compute optimal PCT for RGB image

func CreateScaledProgress

func CreateScaledProgress(min, max float64, progress ProgressFunc, data unsafe.Pointer) unsafe.Pointer

func DestroyDriverManager

func DestroyDriverManager()

Destroy the driver manager

func DestroyScaledProgress

func DestroyScaledProgress(data unsafe.Pointer)

func DitherRGB2PCT

func DitherRGB2PCT(
	red, green, blue, target RasterBand,
	ct ColorTable,
	progress ProgressFunc,
	data interface{},
) int

24bit to 8bit conversion with dithering

func DummyProgress

func DummyProgress(complete float64, message string, data interface{}) int

func FlushCacheBlock

func FlushCacheBlock() bool

Try to flush one cached raster block

func GetCacheMax

func GetCacheMax() int

Get maximum cache memory

func GetCacheUsed

func GetCacheUsed() int

Get cache memory used

func GetDriverCount

func GetDriverCount() int

Fetch the number of registered drivers.

func IntSliceToCInt

func IntSliceToCInt(data []int) []C.int

Safe array conversion

func InvGeoTransform

func InvGeoTransform(transform [6]float64) [6]float64

Invert the supplied transform

func OGRDriverCount

func OGRDriverCount() int

Fetch the number of registered drivers

func OpenDataSourceCount

func OpenDataSourceCount() int

Return the number of opened data sources

func ParameterInfo

func ParameterInfo(
	projectionMethod, parameterName string,
) (
	username, paramType string,
	defaultValue float64,
	ok bool,
)

Fetch information about a single parameter of a projection method

func ParameterList

func ParameterList(method string) (params []string, name string)

Fetch the parameters for a given projection method

func ProjectionMethods

func ProjectionMethods() []string

Fetch list of possible projection methods

func RegenerateOverview

func RegenerateOverview(
	sourceRaster RasterBand,
	destRaster RasterBand,
	resampling string,
	progress ProgressFunc, data interface{},
) error

Generate downsampled overviews, for a unique overview band

func RegenerateOverviews

func RegenerateOverviews(
	sourceRaster RasterBand,
	nOverviewCount int, destRaster []RasterBand,
	resampling string,
	progress ProgressFunc, data interface{},
) error

Generate downsampled overviews

func ReprojectImage

func ReprojectImage(SrcDS Dataset, SrcWKT string,
	DstDS Dataset, DstWKT string,
	resampleAlg ResampleAlg, dfWarpMemoryLimit float64,
	dfMaxError float64,
	progress ProgressFunc, data interface{},
) error

delete option arg, because GDALWarpOptions have not fil func, like GDALWarpAppOptionsNew(char** papszArgv... just GDALCreateWarpOptions()

func ScaledProgress

func ScaledProgress(complete float64, message string, data interface{}) int

func SetCacheMax

func SetCacheMax(bytes int)

Set maximum cache memory

func TermProgress

func TermProgress(complete float64, message string, data interface{}) int

func VSIFCloseL

func VSIFCloseL(file VSILFILE)

Close file.

func VSIFReadL

func VSIFReadL(nSize, nCount int, file VSILFILE) []byte

Read bytes from file.

func VSIReadDirRecursive

func VSIReadDirRecursive(filename string) []string

List VSI files

Types

type Access

type Access int

Flag indicating read/write, or read-only access to data.

type AsyncReader

type AsyncReader struct {
	// contains filtered or unexported fields
}

type AsyncStatusType

type AsyncStatusType int

status of the asynchronous stream

func GetAsyncStatusTypeByName

func GetAsyncStatusTypeByName(statusTypeName string) AsyncStatusType

func (AsyncStatusType) Name

func (statusType AsyncStatusType) Name() string

type ColorEntry

type ColorEntry struct {
	// contains filtered or unexported fields
}

func (*ColorEntry) Get

func (ce *ColorEntry) Get() (c1, c2, c3, c4 uint8)

func (*ColorEntry) Set

func (ce *ColorEntry) Set(c1, c2, c3, c4 uint)

type ColorInterp

type ColorInterp int

Types of color interpretation for raster bands.

func GetColorInterpretationByName

func GetColorInterpretationByName(name string) ColorInterp

func (ColorInterp) Name

func (colorInterp ColorInterp) Name() string

type ColorTable

type ColorTable struct {
	// contains filtered or unexported fields
}

func CreateColorTable

func CreateColorTable(interp PaletteInterp) ColorTable

Construct a new color table

func (ColorTable) Clone

func (ct ColorTable) Clone() ColorTable

Make a copy of the color table

func (ColorTable) CreateColorRamp

func (ct ColorTable) CreateColorRamp(start, end int, startColor, endColor ColorEntry)

Create color ramp

func (ColorTable) Destroy

func (ct ColorTable) Destroy()

Destroy the color table

func (ColorTable) Entry

func (ct ColorTable) Entry(index int) ColorEntry

Fetch a color entry from table

func (ColorTable) EntryCount

func (ct ColorTable) EntryCount() int

Get number of color entries in table

func (ColorTable) PaletteInterpretation

func (ct ColorTable) PaletteInterpretation() PaletteInterp

Fetch palette interpretation

func (ColorTable) SetEntry

func (ct ColorTable) SetEntry(index int, entry ColorEntry)

Set entry in color table

type CoordinateTransform

type CoordinateTransform struct {
	// contains filtered or unexported fields
}

func CreateCoordinateTransform

func CreateCoordinateTransform(
	source SpatialReference,
	dest SpatialReference,
) CoordinateTransform

Create a new CoordinateTransform

func (CoordinateTransform) Destroy

func (ct CoordinateTransform) Destroy()

Destroy CoordinateTransform

func (CoordinateTransform) Transform

func (ct CoordinateTransform) Transform(numPoints int, xPoints []float64, yPoints []float64, zPoints []float64) bool

type DataSource

type DataSource struct {
	// contains filtered or unexported fields
}

func OpenDataSource

func OpenDataSource(name string, update int) DataSource

Open a file / data source with one of the registered drivers

func OpenDataSourceByIndex

func OpenDataSourceByIndex(index int) DataSource

Return the i'th datasource opened

func OpenSharedDataSource

func OpenSharedDataSource(name string, update int) DataSource

Open a shared file / data source with one of the registered drivers

func (DataSource) CopyLayer

func (ds DataSource) CopyLayer(
	source Layer,
	name string,
	options []string,
) Layer

Duplicate an existing layer

func (DataSource) CreateLayer

func (ds DataSource) CreateLayer(
	name string,
	sr SpatialReference,
	geomType GeometryType,
	options []string,
) Layer

Create a new layer on the data source

func (DataSource) Delete

func (ds DataSource) Delete(index int) error

Delete the layer from the data source

func (DataSource) Destroy

func (ds DataSource) Destroy()

Closes datasource and releases resources

func (DataSource) Driver

func (ds DataSource) Driver() OGRDriver

Fetch the driver that the data source was opened with

func (DataSource) ExecuteSQL

func (ds DataSource) ExecuteSQL(sql string, filter Geometry, dialect string) Layer

Execute an SQL statement against the data source

func (DataSource) LayerByIndex

func (ds DataSource) LayerByIndex(index int) Layer

Fetch a layer of this data source by index

func (DataSource) LayerByName

func (ds DataSource) LayerByName(name string) Layer

Fetch a layer of this data source by name

func (DataSource) LayerCount

func (ds DataSource) LayerCount() int

Fetch the number of layers in this data source

func (DataSource) Name

func (ds DataSource) Name() string

Fetch the name of the data source

func (DataSource) Release

func (ds DataSource) Release() error

Drop a reference to this datasource and destroy if reference is zero

func (DataSource) ReleaseResultSet

func (ds DataSource) ReleaseResultSet(layer Layer)

Release the results of ExecuteSQL

func (DataSource) Sync

func (ds DataSource) Sync() error

Flush pending changes to the data source

func (DataSource) TestCapability

func (ds DataSource) TestCapability(capability string) bool

Test if the data source has the indicated capability

type DataType

type DataType int

Pixel data types

func (DataType) IsComplex

func (dataType DataType) IsComplex() int

func (DataType) Name

func (dataType DataType) Name() string

func (DataType) Size

func (dataType DataType) Size() int

Get data type size in bits.

func (DataType) Union

func (dataType DataType) Union(dataTypeB DataType) DataType

type Dataset

type Dataset struct {
	// contains filtered or unexported fields
}

func GDALTranslate

func GDALTranslate(
	destName string,
	srcDS Dataset,
	options []string,
) Dataset

func GDALWarp

func GDALWarp(
	destName string,
	dstDs Dataset,
	srcDs []Dataset,
	options []string,
) Dataset

func Open

func Open(filename string, access Access) (Dataset, error)

Open an existing dataset

func OpenEx

func OpenEx(filename string, flags OpenFlag, allowedDrivers []string,
	openOptions []string, siblingFiles []string) (Dataset, error)

Open an existing dataset

func OpenShared

func OpenShared(filename string, access Access) Dataset

Open a shared existing dataset

func Rasterize

func Rasterize(dstDS string, sourceDS Dataset, options []string) (Dataset, error)

func Translate

func Translate(dstDS string, sourceDS Dataset, options []string) (Dataset, error)

func VectorTranslate

func VectorTranslate(dstDS string, sourceDS []Dataset, options []string) (Dataset, error)

func Warp

func Warp(dstDS string, sourceDS []Dataset, options []string) (Dataset, error)

func (Dataset) Access

func (dataset Dataset) Access() Access

Return access flag

func (Dataset) AddBand

func (dataset Dataset) AddBand(dataType DataType, options []string) error

Add a band to a dataset

func (Dataset) AdviseRead

func (dataset Dataset) AdviseRead(
	rwFlag RWFlag,
	xOff, yOff, xSize, ySize, bufXSize, bufYSize int,
	dataType DataType,
	bandCount int,
	bandMap []int,
	options []string,
) error

Advise driver of upcoming read requests

func (Dataset) AutoCreateWarpedVRT

func (dataset Dataset) AutoCreateWarpedVRT(srcWKT, dstWKT string, resampleAlg ResampleAlg) (Dataset, error)

func (Dataset) BuildOverviews

func (dataset Dataset) BuildOverviews(
	resampling string,
	nOverviews int,
	overviewList []int,
	nBands int,
	bandList []int,
	progress ProgressFunc,
	data interface{},
) error

Build raster overview(s)

func (Dataset) Close

func (dataset Dataset) Close()

Close the dataset

func (Dataset) CopyWholeRaster

func (sourceDataset Dataset) CopyWholeRaster(
	destDataset Dataset,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Copy all dataset raster data

func (Dataset) CreateMaskBand

func (dataset Dataset) CreateMaskBand(flags int) error

Adds a mask band to the dataset

func (Dataset) Driver

func (dataset Dataset) Driver() Driver

Get the driver to which this dataset relates

func (Dataset) FileList

func (dataset Dataset) FileList() []string

Fetch files forming the dataset.

func (Dataset) FlushCache

func (dataset Dataset) FlushCache()

Write all write cached data to disk

func (Dataset) GDALDereferenceDataset

func (dataset Dataset) GDALDereferenceDataset() int

Subtract one from dataset reference count

func (Dataset) GDALGetGCPCount

func (dataset Dataset) GDALGetGCPCount() int

Get number of GCPs

func (Dataset) GDALGetGCPProjection

func (dataset Dataset) GDALGetGCPProjection() string

Get projection of GCPs

func (Dataset) GDALGetInternalHandle

func (dataset Dataset) GDALGetInternalHandle(request string) unsafe.Pointer

Fetch a format specific internally meaningful handle

func (Dataset) GDALReferenceDataset

func (dataset Dataset) GDALReferenceDataset() int

Add one to dataset reference count

func (Dataset) GeoTransform

func (dataset Dataset) GeoTransform() [6]float64

Get the affine transformation coefficients

func (Dataset) IO

func (dataset Dataset) IO(
	rwFlag RWFlag,
	xOff, yOff, xSize, ySize int,
	buffer interface{},
	bufXSize, bufYSize int,
	bandCount int,
	bandMap []int,
	pixelSpace, lineSpace, bandSpace int,
) error

Read / write a region of image data from multiple bands

func (Dataset) InvGeoTransform

func (dataset Dataset) InvGeoTransform() [6]float64

Return the inverted transform

func (*Dataset) Metadata

func (dataset *Dataset) Metadata(domain string) []string

func (*Dataset) MetadataItem

func (object *Dataset) MetadataItem(name, domain string) string

func (Dataset) Projection

func (dataset Dataset) Projection() string

Fetch the projection definition string for this dataset

func (Dataset) RasterBand

func (dataset Dataset) RasterBand(band int) RasterBand

Fetch a raster band object from a dataset

func (Dataset) RasterCount

func (dataset Dataset) RasterCount() int

Fetch the number of raster bands in the dataset

func (Dataset) RasterXSize

func (dataset Dataset) RasterXSize() int

Fetch X size of raster

func (Dataset) RasterYSize

func (dataset Dataset) RasterYSize() int

Fetch Y size of raster

func (Dataset) SetGeoTransform

func (dataset Dataset) SetGeoTransform(transform [6]float64) error

Set the affine transformation coefficients

func (*Dataset) SetMetadataItem

func (object *Dataset) SetMetadataItem(name, value, domain string) error

func (Dataset) SetProjection

func (dataset Dataset) SetProjection(proj string) error

Set the projection reference string

type Driver

type Driver struct {
	// contains filtered or unexported fields
}

func GetDriver

func GetDriver(index int) Driver

Fetch driver by index

func GetDriverByName

func GetDriverByName(driverName string) (Driver, error)

Return the driver by short name

func IdentifyDriver

func IdentifyDriver(filename string, filenameList []string) Driver

Return the driver needed to access the provided dataset name.

func (Driver) CopyDatasetFiles

func (driver Driver) CopyDatasetFiles(newName, oldName string) error

Copy all files associated with the named dataset

func (Driver) Create

func (driver Driver) Create(
	filename string,
	xSize, ySize, bands int,
	dataType DataType,
	options []string,
) Dataset

Create a new dataset with this driver.

func (Driver) CreateCopy

func (driver Driver) CreateCopy(
	filename string,
	sourceDataset Dataset,
	strict int,
	options []string,
	progress ProgressFunc,
	data interface{},
) Dataset

Create a copy of a dataset

func (Driver) DeleteDataset

func (driver Driver) DeleteDataset(name string) error

Delete named dataset

func (Driver) Deregister

func (driver Driver) Deregister()

Reregister the driver

func (Driver) Destroy

func (driver Driver) Destroy()

Destroy a GDAL driver

func (Driver) LongName

func (driver Driver) LongName() string

Get the long name associated with this driver

func (*Driver) MetadataItem

func (object *Driver) MetadataItem(name, domain string) string

Fetch single metadata item.

func (Driver) Register

func (driver Driver) Register() int

Registers a driver for use

func (Driver) RenameDataset

func (driver Driver) RenameDataset(newName, oldName string) error

Rename named dataset

func (Driver) ShortName

func (driver Driver) ShortName() string

Get the short name associated with this driver

type Envelope

type Envelope struct {
	// contains filtered or unexported fields
}

func (Envelope) Contains

func (env Envelope) Contains(other Envelope) bool

Test if one envelope completely contains another

func (Envelope) Intersect

func (env Envelope) Intersect(other Envelope) Envelope

Return the intersection of this envelope with another

func (Envelope) Intersects

func (env Envelope) Intersects(other Envelope) bool

Test if one envelope intersects another

func (Envelope) IsInit

func (env Envelope) IsInit() bool

func (Envelope) MaxX

func (env Envelope) MaxX() float64

func (Envelope) MaxY

func (env Envelope) MaxY() float64

func (Envelope) MinX

func (env Envelope) MinX() float64

func (Envelope) MinY

func (env Envelope) MinY() float64

func (*Envelope) SetMaxX

func (env *Envelope) SetMaxX(val float64)

func (*Envelope) SetMaxY

func (env *Envelope) SetMaxY(val float64)

func (*Envelope) SetMinX

func (env *Envelope) SetMinX(val float64)

func (*Envelope) SetMinY

func (env *Envelope) SetMinY(val float64)

func (Envelope) Union

func (env Envelope) Union(other Envelope) Envelope

Return the union of this envelope with another one

type Feature

type Feature struct {
	// contains filtered or unexported fields
}

func (Feature) Clone

func (feature Feature) Clone() Feature

Duplicate feature

func (Feature) Definition

func (feature Feature) Definition() FeatureDefinition

Fetch feature definition

func (Feature) Destroy

func (feature Feature) Destroy()

Destroy this feature

func (Feature) Equal

func (f1 Feature) Equal(f2 Feature) bool

Test if two features are the same

func (Feature) FID

func (feature Feature) FID() int64

Fetch feature indentifier

func (Feature) FieldAsBinary

func (feature Feature) FieldAsBinary(index int) []uint8

Fetch field as binary data

func (Feature) FieldAsDateTime

func (feature Feature) FieldAsDateTime(index int) (time.Time, bool)

Fetch field as date and time

func (Feature) FieldAsFloat64

func (feature Feature) FieldAsFloat64(index int) float64

Fetch field value as float64

func (Feature) FieldAsFloat64List

func (feature Feature) FieldAsFloat64List(index int) []float64

Fetch field as list of float64

func (Feature) FieldAsInteger

func (feature Feature) FieldAsInteger(index int) int

Fetch field value as integer

func (Feature) FieldAsInteger64

func (feature Feature) FieldAsInteger64(index int) int64

Fetch field value as 64-bit integer

func (Feature) FieldAsInteger64List

func (feature Feature) FieldAsInteger64List(index int) []int64

Fetch field as list of 64-bit integers

func (Feature) FieldAsIntegerList

func (feature Feature) FieldAsIntegerList(index int) []int

Fetch field as list of integers

func (Feature) FieldAsString

func (feature Feature) FieldAsString(index int) string

Fetch field value as string

func (Feature) FieldAsStringList

func (feature Feature) FieldAsStringList(index int) []string

Fetch field as list of strings

func (Feature) FieldCount

func (feature Feature) FieldCount() int

Fetch number of fields on this feature

func (Feature) FieldDefinition

func (feature Feature) FieldDefinition(index int) FieldDefinition

Fetch definition for the indicated field

func (Feature) FieldIndex

func (feature Feature) FieldIndex(name string) int

Fetch the field index for the given field name

func (Feature) Geometry

func (feature Feature) Geometry() Geometry

Fetch geometry of this feature

func (Feature) IsFieldSet

func (feature Feature) IsFieldSet(index int) bool

Return if a field has ever been assigned a value

func (Feature) IsNull

func (feature Feature) IsNull() bool

Returns true if this contains a null pointer

func (Feature) RawField

func (feature Feature) RawField(index int) Field

Fetch a reference to the internal field value

func (Feature) SetFID

func (feature Feature) SetFID(fid int64) error

Set feature identifier

func (Feature) SetFieldBinary

func (feature Feature) SetFieldBinary(index int, value []uint8)

Set field as binary data

func (Feature) SetFieldDateTime

func (feature Feature) SetFieldDateTime(index int, dt time.Time)

Set field as date / time

func (Feature) SetFieldFloat64

func (feature Feature) SetFieldFloat64(index int, value float64)

Set field to float64 value

func (Feature) SetFieldFloat64List

func (feature Feature) SetFieldFloat64List(index int, value []float64)

Set field to list of float64

func (Feature) SetFieldInteger

func (feature Feature) SetFieldInteger(index, value int)

Set field to integer value

func (Feature) SetFieldInteger64

func (feature Feature) SetFieldInteger64(index int, value int64)

Set field to 64-bit integer value

func (Feature) SetFieldInteger64List

func (feature Feature) SetFieldInteger64List(index int, value []int64)

Set field to list of 64-bit integers

func (Feature) SetFieldIntegerList

func (feature Feature) SetFieldIntegerList(index int, value []int)

Set field to list of integers

func (Feature) SetFieldRaw

func (feature Feature) SetFieldRaw(index int, field Field)

Set field from the raw field pointer

func (Feature) SetFieldString

func (feature Feature) SetFieldString(index int, value string)

Set field to string value

func (Feature) SetFieldStringList

func (feature Feature) SetFieldStringList(index int, value []string)

Set field to list of strings

func (Feature) SetFrom

func (this Feature) SetFrom(other Feature, forgiving int) error

Set one feature from another

func (Feature) SetFromWithMap

func (this Feature) SetFromWithMap(other Feature, forgiving int, fieldMap []int) error

Set one feature from another, using field map

func (Feature) SetGeometry

func (feature Feature) SetGeometry(geom Geometry) error

Set feature geometry

func (Feature) SetGeometryDirectly

func (feature Feature) SetGeometryDirectly(geom Geometry) error

Set feature geometry, passing ownership to the feature

func (Feature) SetStyleString

func (feature Feature) SetStyleString(style string)

Set style string for this feature

func (Feature) StealGeometry

func (feature Feature) StealGeometry() Geometry

Fetch geometry of this feature and assume ownership

func (Feature) StlyeString

func (feature Feature) StlyeString() string

Fetch style string for this feature

func (Feature) UnnsetField

func (feature Feature) UnnsetField(index int)

Clear a field and mark it as unset

type FeatureDefinition

type FeatureDefinition struct {
	// contains filtered or unexported fields
}

func CreateFeatureDefinition

func CreateFeatureDefinition(name string) FeatureDefinition

Create a new feature definition object

func (FeatureDefinition) AddFieldDefinition

func (fd FeatureDefinition) AddFieldDefinition(fieldDefn FieldDefinition)

Add a new field definition to this feature definition

func (FeatureDefinition) Create

func (fd FeatureDefinition) Create() Feature

Create a feature from this feature definition

func (FeatureDefinition) DeleteFieldDefinition

func (fd FeatureDefinition) DeleteFieldDefinition(index int) error

Delete a field definition from this feature definition

func (FeatureDefinition) Dereference

func (fd FeatureDefinition) Dereference() int

Decrement the reference count by one

func (FeatureDefinition) Destroy

func (fd FeatureDefinition) Destroy()

Destroy a feature definition object

func (FeatureDefinition) FieldCount

func (fd FeatureDefinition) FieldCount() int

Fetch the number of fields in the feature definition

func (FeatureDefinition) FieldDefinition

func (fd FeatureDefinition) FieldDefinition(index int) FieldDefinition

Fetch the definition of the indicated field

func (FeatureDefinition) FieldIndex

func (fd FeatureDefinition) FieldIndex(name string) int

Fetch the index of the named field

func (FeatureDefinition) GeometryType

func (fd FeatureDefinition) GeometryType() GeometryType

Fetch the geometry base type of this feature definition

func (FeatureDefinition) IsGeometryIgnored

func (fd FeatureDefinition) IsGeometryIgnored() bool

Fetch if the geometry can be ignored when fetching features

func (FeatureDefinition) IsStyleIgnored

func (fd FeatureDefinition) IsStyleIgnored() bool

Fetch if the style can be ignored when fetching features

func (FeatureDefinition) Name

func (fd FeatureDefinition) Name() string

Fetch the name of this feature definition

func (FeatureDefinition) Reference

func (fd FeatureDefinition) Reference() int

Increment the reference count by one

func (FeatureDefinition) ReferenceCount

func (fd FeatureDefinition) ReferenceCount() int

Fetch the current reference count

func (FeatureDefinition) Release

func (fd FeatureDefinition) Release()

Drop a reference, and delete object if no references remain

func (FeatureDefinition) SetGeometryIgnored

func (fd FeatureDefinition) SetGeometryIgnored(val bool)

Set whether the geometry can be ignored when fetching features

func (FeatureDefinition) SetGeometryType

func (fd FeatureDefinition) SetGeometryType(geomType GeometryType)

Set the geometry base type for this feature definition

func (FeatureDefinition) SetStyleIgnored

func (fd FeatureDefinition) SetStyleIgnored(val bool)

Set whether the style can be ignored when fetching features

type Field

type Field struct {
	// contains filtered or unexported fields
}

type FieldDefinition

type FieldDefinition struct {
	// contains filtered or unexported fields
}

func CreateFieldDefinition

func CreateFieldDefinition(name string, fieldType FieldType) FieldDefinition

Create a new field definition

func (FieldDefinition) Destroy

func (fd FieldDefinition) Destroy()

Destroy the field definition

func (FieldDefinition) IsIgnored

func (fd FieldDefinition) IsIgnored() bool

Fetch whether this field should be ignored when fetching features

func (FieldDefinition) Justification

func (fd FieldDefinition) Justification() Justification

Fetch the justification for this field

func (FieldDefinition) Name

func (fd FieldDefinition) Name() string

Fetch the name of the field

func (FieldDefinition) Precision

func (fd FieldDefinition) Precision() int

Fetch the precision for this field

func (FieldDefinition) Set

func (fd FieldDefinition) Set(
	name string,
	fType FieldType,
	width, precision int,
	justify Justification,
)

Set defining parameters of field in a single call

func (FieldDefinition) SetIgnored

func (fd FieldDefinition) SetIgnored(ignore bool)

Set whether this field should be ignored when fetching features

func (FieldDefinition) SetJustification

func (fd FieldDefinition) SetJustification(justify Justification)

Set the justification for this field

func (FieldDefinition) SetName

func (fd FieldDefinition) SetName(name string)

Set the name of the field

func (FieldDefinition) SetPrecision

func (fd FieldDefinition) SetPrecision(precision int)

Set the precision for this field

func (FieldDefinition) SetType

func (fd FieldDefinition) SetType(fType FieldType)

Set the type of this field

func (FieldDefinition) SetWidth

func (fd FieldDefinition) SetWidth(width int)

Set the formatting width for this field

func (FieldDefinition) Type

func (fd FieldDefinition) Type() FieldType

Fetch the type of this field

func (FieldDefinition) Width

func (fd FieldDefinition) Width() int

Fetch the formatting width for this field

type FieldType

type FieldType int

List of well known binary geometry types

func (FieldType) Name

func (ft FieldType) Name() string

Fetch human readable name for the field type

type GDALTranslateOptions

type GDALTranslateOptions struct {
	// contains filtered or unexported fields
}

type GDALWarpAppOptions

type GDALWarpAppOptions struct {
	// contains filtered or unexported fields
}

type GDALWarpOptions

type GDALWarpOptions struct {
	// contains filtered or unexported fields
}

type Geometry

type Geometry struct {
	// contains filtered or unexported fields
}

func ApproximateArcAngles

func ApproximateArcAngles(
	x, y, z,
	primaryRadius,
	secondaryRadius,
	rotation,
	startAngle,
	endAngle,
	stepSizeDegrees float64,
) Geometry

Stroke arc to linestring

func Create

func Create(geomType GeometryType) Geometry

Create an empty geometry of the desired type

func CreateFromGML

func CreateFromGML(gml string) Geometry

Create a geometry from its GML representation

func CreateFromJson

func CreateFromJson(_json string) Geometry

Create a geometry object from its GeoJSON representation

func CreateFromWKB

func CreateFromWKB(wkb []uint8, srs SpatialReference, bytes int) (Geometry, error)

Create a geometry object from its well known binary representation

func CreateFromWKT

func CreateFromWKT(wkt string, srs SpatialReference) (Geometry, error)

Create a geometry object from its well known text representation

func (Geometry) AddGeometry

func (geom Geometry) AddGeometry(other Geometry) error

Add a geometry to a geometry container

func (Geometry) AddGeometryDirectly

func (geom Geometry) AddGeometryDirectly(other Geometry) error

Add a geometry to a geometry container and assign ownership to that container

func (Geometry) AddPoint

func (geom Geometry) AddPoint(x, y, z float64)

Add a new point to the geometry (line string or polygon only)

func (Geometry) AddPoint2D

func (geom Geometry) AddPoint2D(x, y float64)

Add a new point to the geometry (line string or polygon only), ignoring the 3rd dimension

func (Geometry) Area

func (geom Geometry) Area() float64

Compute area of geometry

func (Geometry) Boundary

func (geom Geometry) Boundary() Geometry

Compute boundary for the geometry

func (Geometry) Buffer

func (geom Geometry) Buffer(distance float64, segments int) Geometry

Compute buffer of the geometry

func (Geometry) BuildPolygonFromEdges

func (geom Geometry) BuildPolygonFromEdges(autoClose bool, tolerance float64) (Geometry, error)

Build a polygon / ring from a set of lines

func (Geometry) Centroid

func (geom Geometry) Centroid() Geometry

Compute centroid of geometry

func (Geometry) Clone

func (geom Geometry) Clone() Geometry

Create a copy of this geometry

func (Geometry) CloseRings

func (geom Geometry) CloseRings()

Force rings to be closed

func (Geometry) Contains

func (geom Geometry) Contains(other Geometry) bool

Return true if this geometry contains the other

func (Geometry) ConvexHull

func (geom Geometry) ConvexHull() Geometry

Compute convex hull for the geometry

func (Geometry) CoordinateDimension

func (geom Geometry) CoordinateDimension() int

Get the dimension of the coordinates in this geometry

func (Geometry) Crosses

func (geom Geometry) Crosses(other Geometry) bool

Return true if this feature crosses the other

func (Geometry) Destroy

func (geometry Geometry) Destroy()

Destroy geometry object

func (Geometry) Difference

func (geom Geometry) Difference(other Geometry) Geometry

Compute difference between this geometry and the other

func (Geometry) Dimension

func (geom Geometry) Dimension() int

Get the dimension of this geometry

func (Geometry) Disjoint

func (geom Geometry) Disjoint(other Geometry) bool

Return true if the features are disjoint

func (Geometry) Distance

func (geom Geometry) Distance(other Geometry) float64

Compute distance between thie geometry and the other

func (Geometry) Distance3D

func (geom Geometry) Distance3D(other Geometry) float64

Compute 3D distance between thie geometry and the other. This method is built on the SFCGAL library, check it for the definition of the geometry operation. If OGR is built without the SFCGAL library, this method will always return -1.0

func (Geometry) Empty

func (geom Geometry) Empty()

Clear the geometry to its uninitialized state

func (Geometry) Envelope

func (geom Geometry) Envelope() Envelope

Compute and return the bounding envelope for this geometry

func (Geometry) Equals

func (geom Geometry) Equals(other Geometry) bool

Return true if these features are equal

func (Geometry) FlattenTo2D

func (geom Geometry) FlattenTo2D()

Convert geometry to strictly 2D

func (Geometry) ForceToMultiLineString

func (geom Geometry) ForceToMultiLineString() Geometry

Convert to multilinestring

func (Geometry) ForceToMultiPoint

func (geom Geometry) ForceToMultiPoint() Geometry

Convert to multipoint

func (Geometry) ForceToMultiPolygon

func (geom Geometry) ForceToMultiPolygon() Geometry

Convert to multipolygon

func (Geometry) ForceToPolygon

func (geom Geometry) ForceToPolygon() Geometry

Convert to polygon

func (Geometry) FromWKB

func (geom Geometry) FromWKB(wkb []uint8, bytes int) error

Assign a geometry from well known binary data

func (Geometry) FromWKT

func (geom Geometry) FromWKT(wkt string) error

Assign geometry object from its well known text representation

func (Geometry) Geometry

func (geom Geometry) Geometry(index int) Geometry

Fetch geometry from a geometry container

func (Geometry) GeometryCount

func (geom Geometry) GeometryCount() int

Fetch the number of elements in the geometry, or number of geometries in the container

func (Geometry) Intersection

func (geom Geometry) Intersection(other Geometry) Geometry

Compute intersection of this geometry with the other

func (Geometry) Intersects

func (geom Geometry) Intersects(other Geometry) bool

Return true if these features intersect

func (Geometry) IsEmpty

func (geom Geometry) IsEmpty() bool

Test if the geometry is empty

func (Geometry) IsNull

func (geom Geometry) IsNull() bool

Test if the geometry is null

func (Geometry) IsRing

func (geom Geometry) IsRing() bool

Test if the geometry is a ring

func (Geometry) IsSimple

func (geom Geometry) IsSimple() bool

Test if the geometry is simple

func (Geometry) IsValid

func (geom Geometry) IsValid() bool

Test if the geometry is valid

func (Geometry) Length

func (geom Geometry) Length() float64

Compute length of geometry

func (Geometry) Name

func (geom Geometry) Name() string

Fetch geometry name

func (Geometry) Overlaps

func (geom Geometry) Overlaps(other Geometry) bool

Return true if this geometry overlaps the other

func (Geometry) Point

func (geom Geometry) Point(index int) (x, y, z float64)

Fetch the coordinates of a point in the geometry

func (Geometry) PointCount

func (geom Geometry) PointCount() int

Fetch number of points in the geometry

func (Geometry) Polygonize

func (geom Geometry) Polygonize() Geometry

Polygonize a set of sparse edges

func (Geometry) RemoveGeometry

func (geom Geometry) RemoveGeometry(index int, delete bool) error

Remove a geometry from the geometry container

func (Geometry) Segmentize

func (geom Geometry) Segmentize(distance float64)

Modify the geometry such that it has no line segment longer than the given distance

func (Geometry) SetCoordinateDimension

func (geom Geometry) SetCoordinateDimension(dim int)

Set the dimension of the coordinates in this geometry

func (Geometry) SetPoint

func (geom Geometry) SetPoint(index int, x, y, z float64)

Set the coordinates of a point in the geometry

func (Geometry) SetPoint2D

func (geom Geometry) SetPoint2D(index int, x, y float64)

Set the coordinates of a point in the geometry, ignoring the 3rd dimension

func (Geometry) SetSpatialReference

func (geom Geometry) SetSpatialReference(spatialRef SpatialReference)

Assign a spatial reference to this geometry

func (Geometry) Simplify

func (geom Geometry) Simplify(tolerance float64) Geometry

Simplify the geometry

func (Geometry) SimplifyPreservingTopology

func (geom Geometry) SimplifyPreservingTopology(tolerance float64) Geometry

Simplify the geometry while preserving topology

func (Geometry) SpatialReference

func (geom Geometry) SpatialReference() SpatialReference

Fetch the spatial reference associated with this geometry

func (Geometry) SymmetricDifference

func (geom Geometry) SymmetricDifference(other Geometry) Geometry

Compute symmetric difference between this geometry and the other

func (Geometry) ToGML

func (geom Geometry) ToGML() string

Convert a geometry to GML format

func (Geometry) ToGML_Ex

func (geom Geometry) ToGML_Ex(options []string) string

Convert a geometry to GML format with options

func (Geometry) ToJSON

func (geom Geometry) ToJSON() string

Convert a geometry to JSON format

func (Geometry) ToJSON_ex

func (geom Geometry) ToJSON_ex(options []string) string

Convert a geometry to JSON format with options

func (Geometry) ToKML

func (geom Geometry) ToKML() string

Convert a geometry to KML format

func (Geometry) ToWKB

func (geom Geometry) ToWKB() ([]uint8, error)

Convert a geometry to well known binary data

func (Geometry) ToWKT

func (geom Geometry) ToWKT() (string, error)

Fetch geometry as WKT

func (Geometry) Touches

func (geom Geometry) Touches(other Geometry) bool

Return true if this feature touches the other

func (Geometry) Transform

func (geom Geometry) Transform(ct CoordinateTransform) error

Apply coordinate transformation to geometry

func (Geometry) TransformTo

func (geom Geometry) TransformTo(sr SpatialReference) error

Transform geometry to new spatial reference system

func (Geometry) Type

func (geom Geometry) Type() GeometryType

Fetch geometry type

func (Geometry) Union

func (geom Geometry) Union(other Geometry) Geometry

Compute union of this geometry with the other

func (Geometry) UnionCascaded

func (geom Geometry) UnionCascaded() Geometry

func (Geometry) WKBSize

func (geom Geometry) WKBSize() int

Returns size of related binary representation

func (Geometry) Within

func (geom Geometry) Within(other Geometry) bool

Return true if this geometry is within the other

func (Geometry) X

func (geom Geometry) X(index int) float64

Fetch the X coordinate of a point in the geometry

func (Geometry) Y

func (geom Geometry) Y(index int) float64

Fetch the Y coordinate of a point in the geometry

func (Geometry) Z

func (geom Geometry) Z(index int) float64

Fetch the Z coordinate of a point in the geometry

type GeometryType

type GeometryType uint32

List of well known binary geometry types

type Justification

type Justification int

type Layer

type Layer struct {
	// contains filtered or unexported fields
}

func (Layer) AlterFieldDefn

func (layer Layer) AlterFieldDefn(index int, newDefn FieldDefinition, flags int) error

Alter the definition of an existing field of a layer

func (Layer) CommitTransaction

func (layer Layer) CommitTransaction() error

Commit a transaction on data sources which support it

func (Layer) Create

func (layer Layer) Create(feature Feature) error

Create and write a new feature within a layer

func (Layer) CreateField

func (layer Layer) CreateField(fd FieldDefinition, approxOK bool) error

Create a new field on a layer

func (Layer) Definition

func (layer Layer) Definition() FeatureDefinition

Fetch the schema information for this layer

func (Layer) Delete

func (layer Layer) Delete(index int64) error

Delete indicated feature from layer

func (Layer) DeleteField

func (layer Layer) DeleteField(index int) error

Delete a field from the layer

func (Layer) Extent

func (layer Layer) Extent(force bool) (env Envelope, err error)

Fetch the extent of this layer

func (Layer) FIDColumn

func (layer Layer) FIDColumn() string

Fetch the name of the FID column

func (Layer) Feature

func (layer Layer) Feature(index int64) Feature

Fetch a feature by its index

func (Layer) FeatureCount

func (layer Layer) FeatureCount(force bool) (count int, ok bool)

Fetch the feature count for this layer

func (Layer) GeometryColumn

func (layer Layer) GeometryColumn() string

Fetch the name of the geometry column

func (Layer) Name

func (layer Layer) Name() string

Return the layer name

func (Layer) NextFeature

func (layer Layer) NextFeature() *Feature

Fetch the next available feature from this layer

func (Layer) ReorderField

func (layer Layer) ReorderField(oldIndex, newIndex int) error

Reorder an existing field of a layer

func (Layer) ReorderFields

func (layer Layer) ReorderFields(layerMap []int) error

Reorder all the fields of a layer

func (Layer) ResetReading

func (layer Layer) ResetReading()

Reset reading to start on the first featre

func (Layer) RollbackTransaction

func (layer Layer) RollbackTransaction() error

Roll back the current transaction on data sources which support it

func (Layer) SetAttributeFilter

func (layer Layer) SetAttributeFilter(filter string) error

Set a new attribute query filter

func (Layer) SetFeature

func (layer Layer) SetFeature(feature Feature) error

Rewrite the provided feature

func (Layer) SetIgnoredFields

func (layer Layer) SetIgnoredFields(names []string) error

Set which fields can be ignored when retrieving features from the layer

func (Layer) SetNextByIndex

func (layer Layer) SetNextByIndex(index int64) error

Move read cursor to the provided index

func (Layer) SetSpatialFilter

func (layer Layer) SetSpatialFilter(filter Geometry)

Set a new spatial filter for this layer

func (Layer) SetSpatialFilterRect

func (layer Layer) SetSpatialFilterRect(minX, minY, maxX, maxY float64)

Set a new rectangular spatial filter for this layer

func (Layer) SpatialFilter

func (layer Layer) SpatialFilter() Geometry

Return the current spatial filter for this layer

func (Layer) SpatialReference

func (layer Layer) SpatialReference() SpatialReference

Fetch the spatial reference system for this layer

func (Layer) StartTransaction

func (layer Layer) StartTransaction() error

Begin a transation on data sources which support it

func (Layer) Sync

func (layer Layer) Sync() error

Flush pending changes to the layer

func (Layer) TestCapability

func (layer Layer) TestCapability(capability string) bool

Test if this layer supports the named capability

func (Layer) Type

func (layer Layer) Type() GeometryType

Return the layer geometry type

type MajorObject

type MajorObject struct {
	// contains filtered or unexported fields
}

func (MajorObject) Description

func (object MajorObject) Description() string

Fetch object description

func (MajorObject) Metadata

func (object MajorObject) Metadata(domain string) []string

Fetch metadata

func (MajorObject) MetadataItem

func (object MajorObject) MetadataItem(name, domain string) string

Fetch a single metadata item

func (MajorObject) SetDescription

func (object MajorObject) SetDescription(desc string)

Set object description

func (MajorObject) SetMetadata

func (object MajorObject) SetMetadata(metadata []string, domain string)

Set metadata

func (MajorObject) SetMetadataItem

func (object MajorObject) SetMetadataItem(name, value, domain string)

Set a single metadata item

type OGRDriver

type OGRDriver struct {
	// contains filtered or unexported fields
}

func OGRDriverByIndex

func OGRDriverByIndex(index int) OGRDriver

Fetch the indicated driver by index

func OGRDriverByName

func OGRDriverByName(name string) OGRDriver

Fetch the indicated driver by name

func (OGRDriver) Copy

func (driver OGRDriver) Copy(source DataSource, name string, options []string) (newDS DataSource, ok bool)

Create a new datasource with this driver by copying all layers of the existing datasource

func (OGRDriver) Create

func (driver OGRDriver) Create(name string, options []string) (newDS DataSource, ok bool)

Create a new data source based on this driver

func (OGRDriver) Delete

func (driver OGRDriver) Delete(filename string) error

Delete a data source

func (OGRDriver) Deregister

func (driver OGRDriver) Deregister()

Remove a driver from the list of registered drivers

func (OGRDriver) Name

func (driver OGRDriver) Name() string

Fetch name of driver (file format)

func (OGRDriver) Open

func (driver OGRDriver) Open(filename string, update int) (newDS DataSource, ok bool)

Attempt to open file with this driver

func (OGRDriver) Register

func (driver OGRDriver) Register()

Add a driver to the list of registered drivers

func (OGRDriver) TestCapability

func (driver OGRDriver) TestCapability(capability string) bool

Test if this driver supports the named capability

type OpenFlag

type OpenFlag uint

type PaletteInterp

type PaletteInterp int

Types of color interpretations for a GDALColorTable.

func (PaletteInterp) Name

func (paletteInterp PaletteInterp) Name() string

type ProgressFunc

type ProgressFunc func(complete float64, message string, progressArg interface{}) int

type RATFieldType

type RATFieldType int

type RATFieldUsage

type RATFieldUsage int

type RWFlag

type RWFlag int

Read/Write flag for RasterIO() method

type RasterAttributeTable

type RasterAttributeTable struct {
	// contains filtered or unexported fields
}

func CreateRasterAttributeTable

func CreateRasterAttributeTable() RasterAttributeTable

Construct empty raster attribute table

func (RasterAttributeTable) ColOfUsage

func (rat RasterAttributeTable) ColOfUsage(rfu RATFieldUsage) int

Fetch column index for indicated usage

func (RasterAttributeTable) ColumnCount

func (rat RasterAttributeTable) ColumnCount() int

Fetch table column count

func (RasterAttributeTable) CreateColumn

func (rat RasterAttributeTable) CreateColumn(name string, rft RATFieldType, rfu RATFieldUsage) error

Create new column

func (RasterAttributeTable) Destroy

func (rat RasterAttributeTable) Destroy()

Destroy a RAT

func (RasterAttributeTable) FromColorTable

func (rat RasterAttributeTable) FromColorTable(ct ColorTable) error

Initialize RAT from color table

func (RasterAttributeTable) LinearBinning

func (rat RasterAttributeTable) LinearBinning() (row0min, binsize float64, exists bool)

Fetch linear binning information

func (RasterAttributeTable) NameOfCol

func (rat RasterAttributeTable) NameOfCol(index int) string

Fetch the name of indicated column

func (RasterAttributeTable) RowCount

func (rat RasterAttributeTable) RowCount() int

Fetch row count

func (RasterAttributeTable) RowOfValue

func (rat RasterAttributeTable) RowOfValue(val float64) (int, bool)

Get row for pixel value

func (RasterAttributeTable) SetLinearBinning

func (rat RasterAttributeTable) SetLinearBinning(row0min, binsize float64) error

Set linear binning information

func (RasterAttributeTable) SetRowCount

func (rat RasterAttributeTable) SetRowCount(count int)

Set row count

func (RasterAttributeTable) SetValueAsFloat64

func (rat RasterAttributeTable) SetValueAsFloat64(row, field int, val float64)

Set field value from float64

func (RasterAttributeTable) SetValueAsInt

func (rat RasterAttributeTable) SetValueAsInt(row, field, val int)

Set field value from integer

func (RasterAttributeTable) SetValueAsString

func (rat RasterAttributeTable) SetValueAsString(row, field int, val string)

Set field value from string

func (RasterAttributeTable) ToColorTable

func (rat RasterAttributeTable) ToColorTable(count int) ColorTable

Translate RAT to a color table

func (RasterAttributeTable) TypeOfCol

func (rat RasterAttributeTable) TypeOfCol(index int) RATFieldType

Fetch the type of indicated column

func (RasterAttributeTable) UsageOfCol

func (rat RasterAttributeTable) UsageOfCol(index int) RATFieldUsage

Fetch the usage of indicated column

func (RasterAttributeTable) ValueAsFloat64

func (rat RasterAttributeTable) ValueAsFloat64(row, field int) float64

Fetch field value as float64

func (RasterAttributeTable) ValueAsInt

func (rat RasterAttributeTable) ValueAsInt(row, field int) int

Fetch field value as integer

func (RasterAttributeTable) ValueAsString

func (rat RasterAttributeTable) ValueAsString(row, field int) string

Fetch field value as string

type RasterBand

type RasterBand struct {
	// contains filtered or unexported fields
}

func (RasterBand) AdviseRead

func (rasterBand RasterBand) AdviseRead(
	xOff, yOff, xSize, ySize, bufXSize, bufYSize int,
	dataType DataType,
	options []string,
) error

Advise driver of upcoming read requests

func (RasterBand) BandNumber

func (rasterBand RasterBand) BandNumber() int

Fetch the band number of this raster band

func (RasterBand) BlockSize

func (rasterBand RasterBand) BlockSize() (int, int)

Fetch the "natural" block size of this band

func (RasterBand) CategoryNames

func (rasterBand RasterBand) CategoryNames() []string

Fetch the list of category names for this raster

func (RasterBand) Checksum

func (rb RasterBand) Checksum(xOff, yOff, xSize, ySize int) int

Compute checksum for image region

func (RasterBand) ColorInterp

func (rasterBand RasterBand) ColorInterp() ColorInterp

How should this band be interpreted as color?

func (RasterBand) ColorTable

func (rasterBand RasterBand) ColorTable() ColorTable

Fetch the color table associated with this raster band

func (RasterBand) ComputeMinMax

func (rasterBand RasterBand) ComputeMinMax(approxOK int) (min, max float64)

Compute the min / max values for a band

func (RasterBand) ComputeProximity

func (src RasterBand) ComputeProximity(
	dest RasterBand,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Compute the proximity of all pixels in the image to a set of pixels in the source image

func (RasterBand) ComputeStatistics

func (rasterBand RasterBand) ComputeStatistics(
	approxOK int,
	progress ProgressFunc,
	data interface{},
) (min, max, mean, stdDev float64)

Compute image statistics

func (RasterBand) CreateMaskBand

func (rasterBand RasterBand) CreateMaskBand(flags int) error

Adds a mask band to the current band

func (RasterBand) DefaultHistogram

func (rasterBand RasterBand) DefaultHistogram(
	force int,
	progress ProgressFunc,
	data interface{},
) (min, max float64, buckets int, histogram []int, err error)

Fetch default raster histogram

func (RasterBand) FPolygonize

func (src RasterBand) FPolygonize(
	mask RasterBand,
	layer Layer,
	fieldIndex int,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Create polygon coverage from raster data using a floating point buffer

func (RasterBand) Fill

func (rasterBand RasterBand) Fill(real, imaginary float64) error

Fill this band with a constant value

func (RasterBand) FillNoData

func (src RasterBand) FillNoData(
	mask RasterBand,
	distance float64,
	iterations int,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Fill selected raster regions by interpolation from the edges

func (RasterBand) FlushCache

func (rasterBand RasterBand) FlushCache()

Flush raster data cache

func (RasterBand) GetAccess

func (rasterBand RasterBand) GetAccess() Access

Find out if we have update permission for this band

func (RasterBand) GetDataset

func (rasterBand RasterBand) GetDataset() Dataset

Fetch the owning dataset handle

func (RasterBand) GetDefaultRAT

func (rasterBand RasterBand) GetDefaultRAT() RasterAttributeTable

Fetch default Raster Attribute Table

func (RasterBand) GetMaskBand

func (rasterBand RasterBand) GetMaskBand() RasterBand

Return the mask band associated with the band

func (RasterBand) GetMaskFlags

func (rasterBand RasterBand) GetMaskFlags() int

Return the status flags of the mask band associated with the band

func (RasterBand) GetMaximum

func (rasterBand RasterBand) GetMaximum() (val float64, valid bool)

Fetch the maximum value for this band

func (RasterBand) GetMinimum

func (rasterBand RasterBand) GetMinimum() (val float64, valid bool)

Fetch the minimum value for this band

func (RasterBand) GetOffset

func (rasterBand RasterBand) GetOffset() (float64, bool)

Fetch the raster value offset

func (RasterBand) GetScale

func (rasterBand RasterBand) GetScale() (float64, bool)

Fetch the raster value scale

func (RasterBand) GetStatistics

func (rasterBand RasterBand) GetStatistics(approxOK, force int) (min, max, mean, stdDev float64)

Fetch image statistics

func (RasterBand) GetUnitType

func (rasterBand RasterBand) GetUnitType() string

Return raster unit type

func (RasterBand) HasArbitraryOverviews

func (rasterBand RasterBand) HasArbitraryOverviews() int

Check for arbitrary overviews

func (RasterBand) Histogram

func (rasterBand RasterBand) Histogram(
	min, max float64,
	buckets int,
	includeOutOfRange, approxOK int,
	progress ProgressFunc,
	data interface{},
) ([]int, error)

Compute raster histogram

func (RasterBand) IO

func (rasterBand RasterBand) IO(
	rwFlag RWFlag,
	xOff, yOff, xSize, ySize int,
	buffer interface{},
	bufXSize, bufYSize int,
	pixelSpace, lineSpace int,
) error

Read / Write a region of image data for this band

func (*RasterBand) MetadataItem

func (object *RasterBand) MetadataItem(name, domain string) string

func (RasterBand) NoDataValue

func (rasterBand RasterBand) NoDataValue() (val float64, valid bool)

Fetch the no data value for this band

func (RasterBand) Overview

func (rasterBand RasterBand) Overview(level int) RasterBand

Fetch overview raster band object

func (RasterBand) OverviewCount

func (rasterBand RasterBand) OverviewCount() int

Return the number of overview layers available

func (RasterBand) Polygonize

func (src RasterBand) Polygonize(
	mask RasterBand,
	layer Layer,
	fieldIndex int,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Create polygon coverage from raster data using an integer buffer

func (RasterBand) RasterBandCopyWholeRaster

func (sourceRaster RasterBand) RasterBandCopyWholeRaster(
	destRaster RasterBand,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Copy all raster band raster data

func (RasterBand) RasterDataType

func (rasterBand RasterBand) RasterDataType() DataType

Fetch the pixel data type for this band

func (RasterBand) ReadBlock

func (rasterBand RasterBand) ReadBlock(xOff, yOff int, dataPtr unsafe.Pointer) error

Read a block of image data efficiently

func (RasterBand) SetColorInterp

func (rasterBand RasterBand) SetColorInterp(colorInterp ColorInterp) error

Set color interpretation of the raster band

func (RasterBand) SetColorTable

func (rasterBand RasterBand) SetColorTable(colorTable ColorTable) error

Set the raster color table for this raster band

func (RasterBand) SetDefaultRAT

func (rasterBand RasterBand) SetDefaultRAT(rat RasterAttributeTable) error

Set default Raster Attribute Table

func (*RasterBand) SetMetadataItem

func (rasterBand *RasterBand) SetMetadataItem(name, value, domain string) error

func (RasterBand) SetNoDataValue

func (rasterBand RasterBand) SetNoDataValue(val float64) error

Set the no data value for this band

func (RasterBand) SetOffset

func (rasterBand RasterBand) SetOffset(offset float64) error

Set scaling offset

func (RasterBand) SetRasterCategoryNames

func (rasterBand RasterBand) SetRasterCategoryNames(names []string) error

Set the category names for this band

func (RasterBand) SetScale

func (rasterBand RasterBand) SetScale(scale float64) error

Set scaling ratio

func (RasterBand) SetStatistics

func (rasterBand RasterBand) SetStatistics(min, max, mean, stdDev float64) error

Set statistics on raster band

func (RasterBand) SetUnitType

func (rasterBand RasterBand) SetUnitType(unit string) error

Set unit type

func (RasterBand) SieveFilter

func (src RasterBand) SieveFilter(
	mask, dest RasterBand,
	threshold, connectedness int,
	options []string,
	progress ProgressFunc,
	data interface{},
) error

Removes small raster polygons

func (RasterBand) WriteBlock

func (rasterBand RasterBand) WriteBlock(xOff, yOff int, dataPtr unsafe.Pointer) error

Write a block of image data efficiently

func (RasterBand) XSize

func (rasterBand RasterBand) XSize() int

Fetch X size of raster

func (RasterBand) YSize

func (rasterBand RasterBand) YSize() int

Fetch Y size of raster

type ResampleAlg

type ResampleAlg int

type SpatialReference

type SpatialReference struct {
	// contains filtered or unexported fields
}

func CreateSpatialReference

func CreateSpatialReference(wkt string) SpatialReference

Create a new SpatialReference

func (SpatialReference) AngularUnits

func (sr SpatialReference) AngularUnits() (string, float64)

Fetch the angular units for the geographic coordinate system

func (SpatialReference) AttrValue

func (sr SpatialReference) AttrValue(key string, child int) (value string, ok bool)

Fetch indicated attribute of named node

func (SpatialReference) AuthorityCode

func (sr SpatialReference) AuthorityCode(target string) string

Get the authority code for a node

func (SpatialReference) AuthorityName

func (sr SpatialReference) AuthorityName(target string) string

Get the authority name for a node

func (SpatialReference) AutoIdentifyEPSG

func (sr SpatialReference) AutoIdentifyEPSG() error

Set EPSG authority info if possible

func (SpatialReference) Clone

Make a duplicate of this spatial reference

func (SpatialReference) CloneGeogCS

func (sr SpatialReference) CloneGeogCS() SpatialReference

Make a duplicate of the GEOGCS node of this spatial reference

func (SpatialReference) CopyGeographicCSFrom

func (sr SpatialReference) CopyGeographicCSFrom(other SpatialReference) error

Copy geographic CS from another spatial reference

func (SpatialReference) Dereference

func (sr SpatialReference) Dereference() int

Decrements the reference count by one, returning reference count

func (SpatialReference) Destroy

func (sr SpatialReference) Destroy()

Destroy the spatial reference

func (SpatialReference) EPSGTreatsAsLatLong

func (sr SpatialReference) EPSGTreatsAsLatLong() bool

Return true if EPSG feels this coordinate system should be treated as having lat/long coordinate ordering

func (SpatialReference) Fixup

func (sr SpatialReference) Fixup() error

Fix up spatial reference as needed

func (SpatialReference) FixupOrdering

func (sr SpatialReference) FixupOrdering() error

Correct parameter ordering to match CT specification

func (SpatialReference) FromEPSG

func (sr SpatialReference) FromEPSG(code int) error

Initialize SRS based on EPSG code

func (SpatialReference) FromEPSGA

func (sr SpatialReference) FromEPSGA(code int) error

Initialize SRS based on EPSG code, using EPSG lat/long ordering

func (SpatialReference) FromERM

func (sr SpatialReference) FromERM(proj, datum, units string) error

Import coordinate system from ERMapper projection definitions

func (SpatialReference) FromESRI

func (sr SpatialReference) FromESRI(input string) error

Import coordinate system from ESRI .prj formats

func (SpatialReference) FromPCI

func (sr SpatialReference) FromPCI(proj, units string, params []float64) error

Import coordinate system from PCI projection definition

func (SpatialReference) FromProj4

func (sr SpatialReference) FromProj4(input string) error

Import PROJ.4 coordinate string

func (SpatialReference) FromURL

func (sr SpatialReference) FromURL(url string) error

Import coordinate system from a URL

func (SpatialReference) FromUSGS

func (sr SpatialReference) FromUSGS(projsys, zone int, params []float64, datum int) error

Import coordinate system from USGS projection definition

func (SpatialReference) FromWKT

func (sr SpatialReference) FromWKT(wkt string) error

Initialize SRS based on WKT string

func (SpatialReference) FromXML

func (sr SpatialReference) FromXML(xml string) error

Import coordinate system from XML format (GML only currently)

func (SpatialReference) InverseFlattening

func (sr SpatialReference) InverseFlattening() (float64, error)

Get spheroid inverse flattening axis

func (SpatialReference) IsCompound

func (sr SpatialReference) IsCompound() bool

Return true if compound coordinate system

func (SpatialReference) IsGeocentric

func (sr SpatialReference) IsGeocentric() bool

Return true if geocentric coordinate system

func (SpatialReference) IsGeographic

func (sr SpatialReference) IsGeographic() bool

Return true if geographic coordinate system

func (SpatialReference) IsLocal

func (sr SpatialReference) IsLocal() bool

Return true if local coordinate system

func (SpatialReference) IsProjected

func (sr SpatialReference) IsProjected() bool

Return true if projected coordinate system

func (SpatialReference) IsSame

func (sr SpatialReference) IsSame(other SpatialReference) bool

Return true if the coordinate systems describe the same system

func (SpatialReference) IsSameGeographicCS

func (sr SpatialReference) IsSameGeographicCS(other SpatialReference) bool

Return true if the geographic coordinate systems match

func (SpatialReference) IsSameVerticalCS

func (sr SpatialReference) IsSameVerticalCS(other SpatialReference) bool

Return true if the vertical coordinate systems match

func (SpatialReference) IsVertical

func (sr SpatialReference) IsVertical() bool

Return true if vertical coordinate system

func (SpatialReference) LinearUnits

func (sr SpatialReference) LinearUnits() (string, float64)

Fetch linear projection units

func (SpatialReference) MorphFromESRI

func (sr SpatialReference) MorphFromESRI() error

Convert in place from ESRI WKT format

func (SpatialReference) MorphToESRI

func (sr SpatialReference) MorphToESRI() error

Convert in place to ESRI WKT format

func (SpatialReference) NormalizedProjectionParameter

func (sr SpatialReference) NormalizedProjectionParameter(
	name string, defaultValue float64,
) (float64, error)

Fetch a normalized projection parameter value

func (SpatialReference) PrimeMeridian

func (sr SpatialReference) PrimeMeridian() (string, float64)

Fetch prime meridian information

func (SpatialReference) ProjectionParameter

func (sr SpatialReference) ProjectionParameter(name string, defaultValue float64) (float64, error)

Fetch a projection parameter value

func (SpatialReference) Reference

func (sr SpatialReference) Reference() int

Increments the reference count by one, returning reference count

func (SpatialReference) Release

func (sr SpatialReference) Release()

Decrements the reference count by one and destroy if zero

func (SpatialReference) SemiMajorAxis

func (sr SpatialReference) SemiMajorAxis() (float64, error)

Get spheroid semi-major axis

func (SpatialReference) SemiMinorAxis

func (sr SpatialReference) SemiMinorAxis() (float64, error)

Get spheroid semi-minor axis

func (SpatialReference) SetACEA

func (sr SpatialReference) SetACEA(
	stdp1, stdp2, centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Albers Conic Equal Area

func (SpatialReference) SetAE

func (sr SpatialReference) SetAE(centerLat, centerLong, falseEasting, falseNorthing float64) error

Set to Azimuthal Equidistant

func (SpatialReference) SetAngularUnits

func (sr SpatialReference) SetAngularUnits(units string, radians float64) error

Set the angular units for the geographic coordinate system

func (SpatialReference) SetAttrValue

func (sr SpatialReference) SetAttrValue(path, value string) error

Set attribute value in spatial reference

func (SpatialReference) SetAuthority

func (sr SpatialReference) SetAuthority(target, authority string, code int) error

Sets the authority for a node

func (SpatialReference) SetBonne

func (sr SpatialReference) SetBonne(standardParallel, centralMeridian, falseEasting, falseNorthing float64) error

Set to Bonne

func (SpatialReference) SetCEA

func (sr SpatialReference) SetCEA(stdp1, centralMeridian, falseEasting, falseNorthing float64) error

Set to Cylindrical Equal Area

func (SpatialReference) SetCS

func (sr SpatialReference) SetCS(centerLat, centerLong, falseEasting, falseNorthing float64) error

Set to Cassini-Soldner

func (SpatialReference) SetCompoundCS

func (sr SpatialReference) SetCompoundCS(
	name string,
	horizontal, vertical SpatialReference,
) error

Setup a compound coordinate system

func (SpatialReference) SetEC

func (sr SpatialReference) SetEC(
	stdp1, stdp2, centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Equidistant Conic

func (SpatialReference) SetEckert

func (sr SpatialReference) SetEckert(variation int, centralMeridian, falseEasting, falseNorthing float64) error

Set to Eckert I-VI

func (SpatialReference) SetEquirectangular

func (sr SpatialReference) SetEquirectangular(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Equirectangular

func (SpatialReference) SetEquirectangularGeneralized

func (sr SpatialReference) SetEquirectangularGeneralized(
	centerLat, centerLong, psuedoStdParallel, falseEasting, falseNorthing float64,
) error

Set to Equirectangular (generalized form)

func (SpatialReference) SetFromUserInput

func (sr SpatialReference) SetFromUserInput(name string) error

Set spatial reference from various text formats

func (SpatialReference) SetGEOS

func (sr SpatialReference) SetGEOS(
	centralMeridian, satelliteHeight, falseEasting, falseNorthing float64,
) error

Set to GEOS - Geostationary Satellite View

func (SpatialReference) SetGH

func (sr SpatialReference) SetGH(centralMeridian, falseEasting, falseNorthing float64) error

Set to Goode Homolosine

func (SpatialReference) SetGS

func (sr SpatialReference) SetGS(centralMeridian, falseEasting, falseNorthing float64) error

Set to Gall Stereographic

func (SpatialReference) SetGSTM

func (sr SpatialReference) SetGSTM(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Gauss Schreiber Transverse Mercator

func (SpatialReference) SetGeocentricCS

func (sr SpatialReference) SetGeocentricCS(name string) error

Set the user visible geographic CS name

func (SpatialReference) SetGeographicCS

func (sr SpatialReference) SetGeographicCS(
	geogName, datumName, spheroidName string,
	semiMajor, flattening float64,
	pmName string,
	offset float64,
	angularUnits string,
	toRadians float64,
) error

Set geographic coordinate system

func (SpatialReference) SetGnomonic

func (sr SpatialReference) SetGnomonic(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to gnomonic

func (SpatialReference) SetHOM

func (sr SpatialReference) SetHOM(
	centerLat, centerLong, azimuth, rectToSkew, scale, falseEasting, falseNorthing float64,
) error

Set to Hotine Oblique Mercator projection using azimuth angle

func (SpatialReference) SetHOM2PNO

func (sr SpatialReference) SetHOM2PNO(
	centerLat, lat1, long1, lat2, long2, scale, falseEasting, falseNorthing float64,
) error

Set to Hotine Oblique Mercator projection using two points on projection centerline

func (SpatialReference) SetIGH

func (sr SpatialReference) SetIGH() error

Set to Interrupted Goode Homolosine

func (SpatialReference) SetIWMPolyconic

func (sr SpatialReference) SetIWMPolyconic(
	lat1, lat2, centerLong, falseEasting, falseNorthing float64,
) error

Set to International Map of the World Polyconic

func (SpatialReference) SetKrovak

func (sr SpatialReference) SetKrovak(
	centerLat, centerLong, azimuth, psuedoStdParallel, scale, falseEasting, falseNorthing float64,
) error

Set to Krovak Oblique Conic Conformal

func (SpatialReference) SetLAEA

func (sr SpatialReference) SetLAEA(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Lambert Azimuthal Equal Area

func (SpatialReference) SetLCC

func (sr SpatialReference) SetLCC(
	stdp1, stdp2, centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Lambert Conformal Conic

func (SpatialReference) SetLCC1SP

func (sr SpatialReference) SetLCC1SP(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Lambert Conformal Conic (1 standard parallel)

func (SpatialReference) SetLCCB

func (sr SpatialReference) SetLCCB(
	stdp1, stdp2, centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Lambert Conformal Conic (Belgium)

func (SpatialReference) SetLinearUnits

func (sr SpatialReference) SetLinearUnits(name string, toMeters float64) error

Set the linear units for the projection

func (SpatialReference) SetLinearUnitsAndUpdateParameters

func (sr SpatialReference) SetLinearUnitsAndUpdateParameters(name string, toMeters float64) error

Set the linear units for the target node and update all existing linear parameters

func (SpatialReference) SetLocalCS

func (sr SpatialReference) SetLocalCS(name string) error

Set the user visible local CS name

func (SpatialReference) SetMC

func (sr SpatialReference) SetMC(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Miller Cylindrical

func (SpatialReference) SetMercator

func (sr SpatialReference) SetMercator(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Mercator

func (SpatialReference) SetMollweide

func (sr SpatialReference) SetMollweide(
	centralMeridian, falseEasting, falseNorthing float64,
) error

Set tp Mollweide

func (SpatialReference) SetNZMG

func (sr SpatialReference) SetNZMG(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to New Zealand Map Grid

func (SpatialReference) SetNormalizedProjectionParameter

func (sr SpatialReference) SetNormalizedProjectionParameter(name string, value float64) error

Set a projection parameter with a normalized value

func (SpatialReference) SetOS

func (sr SpatialReference) SetOS(
	originLat, meridian, scale, falseEasting, falseNorthing float64,
) error

Set to Oblique Stereographic

func (SpatialReference) SetOrthographic

func (sr SpatialReference) SetOrthographic(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Orthographic

func (SpatialReference) SetPS

func (sr SpatialReference) SetPS(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Polar Stereographic

func (SpatialReference) SetPolyconic

func (sr SpatialReference) SetPolyconic(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Polyconic

func (SpatialReference) SetProjectedCS

func (sr SpatialReference) SetProjectedCS(name string) error

Set the user visible projected CS name

func (SpatialReference) SetProjectionByName

func (sr SpatialReference) SetProjectionByName(name string) error

Set a projection by name

func (SpatialReference) SetProjectionParameter

func (sr SpatialReference) SetProjectionParameter(name string, value float64) error

Set a projection parameter value

func (SpatialReference) SetRobinson

func (sr SpatialReference) SetRobinson(
	centerLong, falseEasting, falseNorthing float64,
) error

Set to Robinson

func (SpatialReference) SetSOC

func (sr SpatialReference) SetSOC(
	latitudeOfOrigin, centralMeridian, falseEasting, falseNorthing float64,
) error

Set to Swiss Oblique Cylindrical

func (SpatialReference) SetSinusoidal

func (sr SpatialReference) SetSinusoidal(
	centerLong, falseEasting, falseNorthing float64,
) error

Set to Sinusoidal

func (SpatialReference) SetStatePlane

func (sr SpatialReference) SetStatePlane(zone int, nad83 bool) error

Set State Plane projection definition

func (SpatialReference) SetStatePlaneWithUnits

func (sr SpatialReference) SetStatePlaneWithUnits(
	zone int,
	nad83 bool,
	unitName string,
	factor float64,
) error

Set State Plane projection definition

func (SpatialReference) SetStereographic

func (sr SpatialReference) SetStereographic(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Stereographic

func (SpatialReference) SetTM

func (sr SpatialReference) SetTM(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Transverse Mercator

func (SpatialReference) SetTMG

func (sr SpatialReference) SetTMG(
	centerLat, centerLong, falseEasting, falseNorthing float64,
) error

Set to Tunisia Mining Grid

func (SpatialReference) SetTMSO

func (sr SpatialReference) SetTMSO(
	centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Transverse Mercator (South Oriented)

func (SpatialReference) SetTMVariant

func (sr SpatialReference) SetTMVariant(
	variantName string, centerLat, centerLong, scale, falseEasting, falseNorthing float64,
) error

Set to Transverse Mercator variant

func (SpatialReference) SetTOWGS84

func (sr SpatialReference) SetTOWGS84(dx, dy, dz, ex, ey, ez, ppm float64) error

Set the Bursa-Wolf conversion to WGS84

func (SpatialReference) SetTargetLinearUnits

func (sr SpatialReference) SetTargetLinearUnits(target, units string, toMeters float64) error

Set the linear units for the target node

func (SpatialReference) SetUTM

func (sr SpatialReference) SetUTM(zone int, north bool) error

Set UTM projection definition

func (SpatialReference) SetVDG

func (sr SpatialReference) SetVDG(
	centerLong, falseEasting, falseNorthing float64,
) error

Set to VanDerGrinten

func (SpatialReference) SetVerticalCS

func (sr SpatialReference) SetVerticalCS(csName, datumName string, datumType int) error

Set up the vertical coordinate system

func (SpatialReference) SetWellKnownGeographicCS

func (sr SpatialReference) SetWellKnownGeographicCS(name string) error

Set geographic CS based on well known name

func (SpatialReference) StripCTParams

func (sr SpatialReference) StripCTParams() error

Strip OGC CT parameters

func (SpatialReference) TOWGS84

func (sr SpatialReference) TOWGS84() (coeff [7]float64, err error)

Fetch the TOWGS84 parameters if available

func (SpatialReference) TargetLinearUnits

func (sr SpatialReference) TargetLinearUnits(target string) (string, float64)

Fetch linear units for target

func (SpatialReference) ToMICoordSys

func (sr SpatialReference) ToMICoordSys() (output string, errVal error)

Export coordinate system in Mapinfo style CoordSys format

func (SpatialReference) ToPCI

func (sr SpatialReference) ToPCI() (proj, units string, params []float64, errVal error)

Export coordinate system in PCI format

func (SpatialReference) ToPrettyWKT

func (sr SpatialReference) ToPrettyWKT(simplify bool) (string, error)

Export coordinate system to a nicely formatted WKT string

func (SpatialReference) ToProj4

func (sr SpatialReference) ToProj4() (string, error)

Export coordinate system in PROJ.4 format

func (SpatialReference) ToUSGS

func (sr SpatialReference) ToUSGS() (proj, zone int, params []float64, datum int, errVal error)

Export coordinate system to USGS GCTP projection definition

func (SpatialReference) ToWKT

func (sr SpatialReference) ToWKT() (string, error)

Export coordinate system to WKT

func (SpatialReference) ToXML

func (sr SpatialReference) ToXML() (xml string, errVal error)

Export coordinate system in XML format

func (SpatialReference) UTMZone

func (sr SpatialReference) UTMZone() (zone int, north bool)

Get UTM zone information

func (SpatialReference) Validate

func (sr SpatialReference) Validate() error

Validate spatial reference tokens

type StyleMgr

type StyleMgr struct {
	// contains filtered or unexported fields
}

type StyleTable

type StyleTable struct {
	// contains filtered or unexported fields
}

type StyleTool

type StyleTool struct {
	// contains filtered or unexported fields
}

type VSILFILE

type VSILFILE struct {
	// contains filtered or unexported fields
}

func VSIFOpenL

func VSIFOpenL(fileName string, fileAccess string) (VSILFILE, error)

Open file.

Directories

Path Synopsis
examples

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