libpysal.weights.spw_from_gal¶

libpysal.weights.spw_from_gal(galfile)[source]¶

Sparse scipy matrix for w from a gal file.

Parameters:¶

galfile : string¶

name of gal file including suffix

Returns:¶

• spw (sparse_matrix) – scipy sparse matrix in CSR format

• ids (array) – identifiers for rows/cols of spw

Examples

>>> import libpysal
>>> spw = libpysal.weights.spw_from_gal(libpysal.examples.get_path("sids2.gal"))
>>> spw.sparse.nnz
462