README
¶
Geoos
Our organization spatial-go is officially established! The first open source project Geoos(Using Golang) provides spatial data and geometric algorithms.
All comments and suggestions are welcome!
Guides
Contents
Structure
Algorithmis the definition of spatial operation, which is outside exposing.strategy.godefines the implementation of the spatial computing based algorithm.
Documentation
How to use Geoos:
Example: Calculating area via Geoos
package main
import (
"encoding/json"
"fmt"
"github.com/spatial-go/geoos"
"github.com/spatial-go/geoos/encoding/wkt"
"github.com/spatial-go/geoos/geojson"
"github.com/spatial-go/geoos/planar"
)
func main() {
// First, choose the default algorithm.
strategy := planar.NormalStrategy()
// Secondly, manufacturing test data and convert it to geometry
const polygon = `POLYGON((-1 -1, 1 -1, 1 1, -1 1, -1 -1))`
geometry, _ := wkt.UnmarshalString(polygon)
// Last， call the Area () method and get result.
area, e := strategy.Area(geometry)
if e != nil {
fmt.Printf(e.Error())
}
fmt.Printf("%f", area)
// get result 4.0
rawJSON := []byte(`
{ "type": "FeatureCollection",
"features": [
{ "type": "Feature",
"geometry": {"type": "Point", "coordinates": [102.0, 0.5]},
"properties": {"prop0": "value0"}
}
]
}`)
fc := geojson.NewFeatureCollection()
_ = json.Unmarshal(rawJSON, &fc)
println("%p", fc)
// Geometry will be unmarshalled into the correct geo.Geometry type.
point := fc.Features[0].Geometry.(geoos.Point)
println("%p", &point)
}
Maintainer
Contributing
We will also uphold the concept of "openness, co-creation, and win-win" to contribute in the field of space computing.
Welcome to join us ！please report an issue
Email Address： geoos@changjing.ai
License
Geoos is licensed under the:
LGPL-2.1
Documentation
¶
Source Files
Directories
¶
| Path | Synopsis |
|---|---|
|
Package algorithm defines Specifies Computational Geometric and algorithm err.
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Package algorithm defines Specifies Computational Geometric and algorithm err. |
|
buffer
Package buffer define geomtry matrix conversion.
|
Package buffer define geomtry matrix conversion. |
|
buffer/simplify
Package simplify define Douglas Peucker and Topology Preserving simplify.
|
Package simplify define Douglas Peucker and Topology Preserving simplify. |
|
calc/angle
Package angle define angel calculation function.
|
Package angle define angel calculation function. |
|
calc/bytevalues
Package bytevalues ead and write primitive datatypes from/to byte
|
Package bytevalues ead and write primitive datatypes from/to byte |
|
filter
Package filter Define data filter function.
|
Package filter Define data filter function. |
|
matrix
Package matrix Define spatial matrix base.
|
Package matrix Define spatial matrix base. |
|
measure
Package measure Define spatial measurement function.
|
Package measure Define spatial measurement function. |
|
operation
Package operation define valid func for geometries.
|
Package operation define valid func for geometries. |
|
overlay/chain
Package chain Define Monotone Chains,it is a way of partitioning the segments of a linestring to allow for fast searching of intersections.
|
Package chain Define Monotone Chains,it is a way of partitioning the segments of a linestring to allow for fast searching of intersections. |
|
overlay/sweepline
Package sweepline Contains struct which implement a sweepline algorithm for scanning geometric data structures.
|
Package sweepline Contains struct which implement a sweepline algorithm for scanning geometric data structures. |
|
encoding
|
|
|
wkb
Package wkb is for decoding ESRI's Well Known Binary (WKB) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary Package wkb is for decoding ESRI's Well Known Binary (WKB) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary Package wkb is for decoding ESRI's Well Known Binary (WKB) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary
|
Package wkb is for decoding ESRI's Well Known Binary (WKB) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary Package wkb is for decoding ESRI's Well Known Binary (WKB) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary Package wkb is for decoding ESRI's Well Known Binary (WKB) format specification at https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry#Well-known_binary |
|
Package geocsv is a library for read csv file with geospatial data.
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Package geocsv is a library for read csv file with geospatial data. |
|
Package geojson is a library for encoding and decoding GeoJSON into Go structs using the geometries.
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Package geojson is a library for encoding and decoding GeoJSON into Go structs using the geometries. |
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Package index define spatial index interface.
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Package index define spatial index interface. |
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intervalrtree
Package intervalrtree Contains structs to implement an R-tree index for one-dimensional intervals.
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Package intervalrtree Contains structs to implement an R-tree index for one-dimensional intervals. |
|
kdtree
Package kdtree Contains classes which implement a k-D tree index over 2-D point data.
|
Package kdtree Contains classes which implement a k-D tree index over 2-D point data. |
|
quadtree
Package quadtree A Quadtree is a spatial index structure for efficient range querying of items bounded by 2D rectangles.
|
Package quadtree A Quadtree is a spatial index structure for efficient range querying of items bounded by 2D rectangles. |
|
Package planar provides support for the implementation of spatial operations and geometric algorithms.
|
Package planar provides support for the implementation of spatial operations and geometric algorithms. |
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