wrap.subset¶

wrap.subset(geom, polygonIndices)¶

Returns new geometry which contains specified polygons from geom.

Usage:

geomSubset, vertexMapping = subset(geom, polygonIndices)

Parameters:	geom : wrap.Geom Input geometry. polygonIndices : sequence of int list of polygon indices from input geometry.
Returns:	result : (geomSubset, vertexMapping) geomSubset : wrap.Geom geometry which contains polygons from geom according to polygonIndices. vertexMapping : list of int mapping from new vertex positions (from geomSubset) to old vertex position (geom).