MapWinGeoProc:SpatialOperations

From MapWindow GIS

SpatialOperations

Summary

Contains public methods for users to clip grids and shapes with.

Functions

ClipGridWithPolygon	This function has 2 overloads.
SelectWithPolygon	Selects all points/lines/polygons in the input shapefile that intersect the polygon shape. Returns the selected shapes in a new shapefile.
ClipShapesWithPolygon	This function has 4 overloads.
ClipPolygonSFWithLineSF	In Development: Prone to errors! For clipping multiple polygons with multiple lines.
ClipPolygonWithLine	This function has 4 overloads.
Difference	Returns a new polygon representing the point set difference of poly1 with poly2.
Union	Returns a new polygon representing the point set combination of polygon1 with polygon2.
Intersection	Returns a new polygon representing the point set intersection of polygon1 with polygon2.
SymmetricDifference	Returns a new polygon representing the point set exclusive OR of polygon1 with polygon2.
MergeShapes	This function has 2 overloads.
BufferShape	Creates a buffer around the input shape at the distance specified.
BufferSF	Buffers all shapes in the input shapefile.
BufferLine	Creates a polygon buffer around the line at the distance specified.
BufferLineSF	Creates a buffer around each line in the input shapefile.
BufferPolygon	Creates a buffer around (or inside of) the input polygon at the distance specified.
BufferPolygonSF	Creates a buffer around each polygon in the input shapefile.
Erase	This function has 2 overloads.
ConvexHull	Not Implemented Computes the convex hull of a polygon. The convex hull is the smallest convex polygon that contains all the points in the input polgyon. Uses the Graham Scan algorithm.
Identity	Not Implemented Computes a geometric intersection of the input shapes and the indentity shapes. The input shapes, or portions thereof that overlap the identity shapes, will get the attributes of those identity shapes.
SelectByAttribute	Selects all shapes in the input shapefile based on a field value.

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