matrix

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 Go to latest Published: Oct 14, 2021 License: LGPL-2.1 Imports: 4 Imported by: 0

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Overview

Package matrix Define spatial matrix base.

Package matrix Define spatial matrix base.

Package matrix Define spatial matrix base.

Package matrix Define spatial matrix base.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Collection 

type Collection []Steric

A Collection is a collection of sterices that is also a Steric.

func (Collection) Bound 

func (c Collection) Bound() []Matrix

Bound returns a bound around the Collection.

func (Collection) BoundaryDimensions 

func (c Collection) BoundaryDimensions() int

BoundaryDimensions Compute the IM entry for the intersection of the boundary of a geometry with the Exterior.

func (Collection) Dimensions 

func (c Collection) Dimensions() int

Dimensions returns the max of the dimensions of the collection.

func (Collection) Equals 

func (c Collection) Equals(ms Steric) bool

Equals returns true if the two Collection are equal

func (Collection) EqualsExact 

func (c Collection) EqualsExact(ms Steric, tolerance float64) bool

EqualsExact returns true if the two Collection are equalexact

func (Collection) Filter added in v1.0.2 

func (c Collection) Filter(f Filter) Steric

Filter Performs an operation with the provided .

func (Collection) IsEmpty 

func (c Collection) IsEmpty() bool

IsEmpty returns true if the Matrix is empty.

func (Collection) Nums 

func (c Collection) Nums() int

Nums ...

type Filter added in v1.0.2 

type Filter interface {
	// IsChanged  Returns the true when need change.
	IsChanged() bool

	// FilterMatrixes  Performs an operation with the provided .
	FilterMatrixes(matrixes []Matrix)

	// Filter  Performs an operation with the provided .
	Filter(matrix Matrix)

	// Matrixes ...
	Matrixes() []Matrix

	// Clear ...
	Clear()
}

Filter An interface which use the values of the matrix in a Steric. 

matrix filters can be used to implement centroid and
envelope computation, and many other functions.

type IntersectionMatrix 

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

IntersectionMatrix a Dimensionally Extended Nine-Intersection Model (DE-9IM) matrix. DE-9IM matrix values (such as "212FF1FF2") specify the topological relationship between two Geometries. DE-9IM matrices are 3x3 matrices with integer entries. The matrix indices {0,1,2} represent the topological locations that occur in a geometry (Interior, Boundary, Exterior). For a description of the DE-9IM and the spatial predicates derived from it, see the following references: <a href="http://www.opengis.org/techno/specs.htm"> OGC 99-049 OpenGIS Simple Features Specification for SQL</a> <a href="http://portal.opengeospatial.org/files/?artifact_id=25355"> OGC 06-103r4 OpenGIS Implementation Standard for Geographic information - Simple feature access - Part 1: Common architecture</a>

func IntersectionMatrixDefault 

func IntersectionMatrixDefault() *IntersectionMatrix

IntersectionMatrixDefault Creates an IntersectionMatrix with FALSE dimension values.

func (*IntersectionMatrix) IsContains 

func (im *IntersectionMatrix) IsContains() bool

IsContains Tests whether this matrix matches [T*****FF*[.

func (*IntersectionMatrix) IsCoveredBy 

func (im *IntersectionMatrix) IsCoveredBy() bool

IsCoveredBy Tests if this matrix matches 

[T*F**F***]

or [*TF**F***] or [**FT*F***] or [**F*TF***]

func (*IntersectionMatrix) IsCovers 

func (im *IntersectionMatrix) IsCovers() bool

IsCovers Tests if this matrix matches 

[T*****FF*]

or [*T****FF*] or [***T**FF*] or [****T*FF*]

func (*IntersectionMatrix) IsCrosses 

func (im *IntersectionMatrix) IsCrosses(dimensionOfGeometryA, dimensionOfGeometryB int) bool

IsCrosses Tests whether this geometry crosses the specified geometry.

func (*IntersectionMatrix) IsDisjoint 

func (im *IntersectionMatrix) IsDisjoint() bool

IsDisjoint Tests if this matrix matches [FF*FF****].

func (*IntersectionMatrix) IsEquals 

func (im *IntersectionMatrix) IsEquals(dimensionOfGeometryA, dimensionOfGeometryB int) bool

IsEquals Tests whether the argument dimensions are equal and this matrix matches the pattern <tt>[T*F**FFF*]</tt>.

func (*IntersectionMatrix) IsIntersects 

func (im *IntersectionMatrix) IsIntersects() bool

IsIntersects Tests if isDisjoint returns false.

func (*IntersectionMatrix) IsOverlaps 

func (im *IntersectionMatrix) IsOverlaps(dimensionOfGeometryA, dimensionOfGeometryB int) bool

IsOverlaps Tests if this matrix matches <UL> 

<LI><tt>[T*T***T**]</tt> (for two points or two surfaces)
<LI><tt>[1*T***T**]</tt> (for two curves)

</UL>.

func (*IntersectionMatrix) IsTouches 

func (im *IntersectionMatrix) IsTouches(dimensionOfGeometryA, dimensionOfGeometryB int) bool

IsTouches Tests if this matrix matches [FT*******], [F**T*****] or [F***T****].

func (*IntersectionMatrix) IsWithin 

func (im *IntersectionMatrix) IsWithin() bool

IsWithin Tests whether this matrix matches [T*F**F***].

func (*IntersectionMatrix) Matches 

func (im *IntersectionMatrix) Matches(pattern string) (bool, error)

Matches Tests whether this matrix matches the given matrix pattern.

func (*IntersectionMatrix) Set 

func (im *IntersectionMatrix) Set(row, column, dimensionValue int)

Set Changes the value of one of this IntersectionMatrixes elements.

func (*IntersectionMatrix) SetAll 

func (im *IntersectionMatrix) SetAll(dimensionValue int)

SetAll Changes the elements of this IntersectionMatrix to dimensionValue

func (*IntersectionMatrix) SetAtLeast 

func (im *IntersectionMatrix) SetAtLeast(row, column, minimumDimensionValue int)

SetAtLeast Changes the specified element to minimumDimensionValue if the element is less.

func (*IntersectionMatrix) SetAtLeastIfValid 

func (im *IntersectionMatrix) SetAtLeastIfValid(row, column, minimumDimensionValue int)

SetAtLeastIfValid If row &gt;= 0 and column &gt;= 0, changes the specified element to minimumDimensionValue if the element is less. Does nothing if row &lt;0 or column &lt; 0.

func (*IntersectionMatrix) SetAtLeastString 

func (im *IntersectionMatrix) SetAtLeastString(minimumDimensionSymbols string)

SetAtLeastString For each element in this IntersectionMatrix, changes the 

element to the corresponding minimum dimension symbol if the element is less.

func (*IntersectionMatrix) SetString 

func (im *IntersectionMatrix) SetString(dimensionSymbols string)

SetString Changes the elements of this IntersectionMatrix to the dimension symbols in dimensionSymbols.

func (*IntersectionMatrix) ToString 

func (im *IntersectionMatrix) ToString() string

ToString Returns a nine-character String representation of this IntersectionMatrix

func (*IntersectionMatrix) Transpose 

func (im *IntersectionMatrix) Transpose() *IntersectionMatrix

Transpose this IntersectionMatrix.

type LineMatrix 

type LineMatrix [][]float64

LineMatrix is a two-dimensional matrix.

func (LineMatrix) Bound 

func (l LineMatrix) Bound() []Matrix

Bound returns a rect around the line string. Uses rectangular coordinates.

func (LineMatrix) BoundaryDimensions 

func (l LineMatrix) BoundaryDimensions() int

BoundaryDimensions Compute the IM entry for the intersection of the boundary of a geometry with the Exterior.

func (LineMatrix) Dimensions 

func (l LineMatrix) Dimensions() int

Dimensions returns 0 because a line matrix is a 0d object.

func (LineMatrix) Equals 

func (l LineMatrix) Equals(ms Steric) bool

Equals returns true if the two LineMatrix are equal

func (LineMatrix) EqualsExact 

func (l LineMatrix) EqualsExact(ms Steric, tolerance float64) bool

EqualsExact returns true if the two Matrix are equalexact

func (LineMatrix) Filter added in v1.0.2 

func (l LineMatrix) Filter(f Filter) Steric

Filter Performs an operation with the provided .

func (LineMatrix) IsClosed 

func (l LineMatrix) IsClosed() bool

IsClosed Returns TRUE if the LINESTRING's start and end points are coincident. For Polyhedral Surfaces, reports if the surface is areal (open) or IsC (closed).

func (LineMatrix) IsEmpty 

func (l LineMatrix) IsEmpty() bool

IsEmpty returns true if the Matrix is empty.

func (LineMatrix) Nums 

func (l LineMatrix) Nums() int

Nums num of line matrix

func (LineMatrix) ToLineArray 

func (l LineMatrix) ToLineArray() (lines []*LineSegment)

ToLineArray returns the LineArray

type LineSegment 

type LineSegment struct {
	P0, P1 Matrix
}

LineSegment is line.

func LineArray 

func LineArray(l LineMatrix) (lines []*LineSegment)

LineArray returns the LineArray

func (*LineSegment) PointAlong 

func (l *LineSegment) PointAlong(segmentLengthFraction float64) Matrix

PointAlong Computes point that lies a given fraction along the line defined by this segment. A fraction of 0.0 returns the start point of the segment; a fraction of 1.0 returns the end point of the segment. If the fraction is &lt; 0.0 or &gt; 1.0 the point returned will lie before the start or beyond the end of the segment.

func (*LineSegment) PointAlongOffset 

func (l *LineSegment) PointAlongOffset(segmentLengthFraction, offsetDistance float64) (Matrix, error)

PointAlongOffset Computes point that lies a given fraction along the line defined by this segment and offset from the segment by a given distance. A fraction of 0.0 offsets from the start point of the segment; a fraction of 1.0 offsets from the end point of the segment. The computed point is offset to the left of the line if the offset distance is positive, to the right if negative.

type Matrix 

type Matrix []float64

Matrix is a one-dimensional matrix.

func TransMatrixes 

func TransMatrixes(inputGeom Steric) []Matrix

TransMatrixes trans steric to array matrixes.

func (Matrix) Bound 

func (m Matrix) Bound() []Matrix

Bound returns a single point bound of the point.

func (Matrix) BoundaryDimensions 

func (m Matrix) BoundaryDimensions() int

BoundaryDimensions Compute the IM entry for the intersection of the boundary of a geometry with the Exterior.

func (Matrix) Compare 

func (m Matrix) Compare(m1 Matrix) (int, error)

Compare returns 0 if m1==m2,1 if positive ,-1 else Compares Coordinate for order.

func (Matrix) Dimensions 

func (m Matrix) Dimensions() int

Dimensions returns 0 because a matrix is a 0d object.

func (Matrix) Equals 

func (m Matrix) Equals(ms Steric) bool

Equals returns true if the two Matrix are equal

func (Matrix) EqualsExact 

func (m Matrix) EqualsExact(ms Steric, tolerance float64) bool

EqualsExact returns true if the two Matrix are equalexact

func (Matrix) Filter added in v1.0.2 

func (m Matrix) Filter(f Filter) Steric

Filter Performs an operation with the provided .

func (Matrix) IsEmpty 

func (m Matrix) IsEmpty() bool

IsEmpty returns true if the Matrix is empty.

func (Matrix) Nums 

func (m Matrix) Nums() int

Nums num of matrix

type MultiPolygonMatrix 

type MultiPolygonMatrix [][][][]float64

MultiPolygonMatrix is a four-dimensional matrix.

func (MultiPolygonMatrix) Bound 

func (m MultiPolygonMatrix) Bound() []Matrix

Bound returns a bound around the multi-polygon.

func (MultiPolygonMatrix) BoundaryDimensions 

func (m MultiPolygonMatrix) BoundaryDimensions() int

BoundaryDimensions Compute the IM entry for the intersection of the boundary of a geometry with the Exterior.

func (MultiPolygonMatrix) Dimensions 

func (m MultiPolygonMatrix) Dimensions() int

Dimensions returns 0 because a 3 Dimensions matrix is a 0d object.

func (MultiPolygonMatrix) Equals 

func (m MultiPolygonMatrix) Equals(ms Steric) bool

Equals returns true if the two MultiPolygonMatrix are equal

func (MultiPolygonMatrix) EqualsExact 

func (m MultiPolygonMatrix) EqualsExact(ms Steric, tolerance float64) bool

EqualsExact returns true if the two Matrix are equalexact

func (MultiPolygonMatrix) Filter added in v1.0.2 

func (m MultiPolygonMatrix) Filter(f Filter) Steric

Filter Performs an operation with the provided .

func (MultiPolygonMatrix) IsEmpty 

func (m MultiPolygonMatrix) IsEmpty() bool

IsEmpty returns true if the Matrix is empty.

func (MultiPolygonMatrix) Nums 

func (m MultiPolygonMatrix) Nums() int

Nums num of polygon matrix

type PolygonMatrix 

type PolygonMatrix [][][]float64

PolygonMatrix is a three-dimensional matrix.

func (PolygonMatrix) Bound 

func (p PolygonMatrix) Bound() []Matrix

Bound returns a bound around the polygon.

func (PolygonMatrix) BoundaryDimensions 

func (p PolygonMatrix) BoundaryDimensions() int

BoundaryDimensions Compute the IM entry for the intersection of the boundary of a geometry with the Exterior.

func (PolygonMatrix) Dimensions 

func (p PolygonMatrix) Dimensions() int

Dimensions returns 0 because a polygon matrix is a 0d object.

func (PolygonMatrix) Equals 

func (p PolygonMatrix) Equals(ms Steric) bool

Equals returns true if the two PolygonMatrix are equal

func (PolygonMatrix) EqualsExact 

func (p PolygonMatrix) EqualsExact(ms Steric, tolerance float64) bool

EqualsExact returns true if the two Matrix are equalexact

func (PolygonMatrix) Filter added in v1.0.2 

func (p PolygonMatrix) Filter(f Filter) Steric

Filter Performs an operation with the provided .

func (PolygonMatrix) IsEmpty 

func (p PolygonMatrix) IsEmpty() bool

IsEmpty returns true if the Matrix is empty.

func (PolygonMatrix) Nums 

func (p PolygonMatrix) Nums() int

Nums num of polygon matrix

type Steric 

type Steric interface {
	// e.g. 0d, 1d, 2d
	Dimensions() int

	BoundaryDimensions() int

	// Num of geometries
	Nums() int

	// Equals returns true if the Geometry represents the same Geometry or vector.
	Equals(s Steric) bool

	// EqualsExact Returns true if the two Geometries are exactly equal,
	// up to a specified distance tolerance.
	// Two Geometries are exactly equal within a distance tolerance
	EqualsExact(g Steric, tolerance float64) bool

	// IsEmpty returns true if the Matrix is empty.
	IsEmpty() bool

	Bound() []Matrix

	// Filter Performs an operation with the provided .
	Filter(f Filter) Steric
}

Steric is the interface implemented by other Steric objects

type UniqueArrayFilter added in v1.0.2 

type UniqueArrayFilter struct {
	IsNotChange bool
	// contains filtered or unexported fields
}

UniqueArrayFilter A Filter that extracts a unique array.

func (*UniqueArrayFilter) Clear added in v1.0.2 

func (u *UniqueArrayFilter) Clear()

Clear Returns the gathered Matrixes.

func (*UniqueArrayFilter) Filter added in v1.0.2 

func (u *UniqueArrayFilter) Filter(matrix Matrix)

Filter Performs an operation with the provided .

func (*UniqueArrayFilter) FilterMatrixes added in v1.0.2 

func (u *UniqueArrayFilter) FilterMatrixes(matrixes []Matrix)

FilterMatrixes Performs an operation with the provided .

func (*UniqueArrayFilter) IsChanged added in v1.0.2 

func (u *UniqueArrayFilter) IsChanged() bool

IsChanged Returns the true when need change.

func (*UniqueArrayFilter) Matrixes added in v1.0.2 

func (u *UniqueArrayFilter) Matrixes() []Matrix

Matrixes Returns the gathered Matrixes.

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