substrate_raster.py 文件源码

python
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项目:CHaMP_Metrics 作者: SouthForkResearch 项目源码 文件源码
def generate_voronoi(geoseries_polygons):
    """Generate Voronoi polygons from polygon edges
    :param geoseries_polygons: GeoSeries of raw polygons
    :return:
    """
    edges = geoseries_polygons.unary_union.boundary
    pnts = points_along_boundaries(edges, 0.75)
    cent = pnts.centroid
    tpnts = translate(pnts, -cent.x, -cent.y)
    vor = Voronoi(tpnts)
    polys = []
    for region in vor.regions:
        if len(region) > 0 and all([i > 0 for i in region]):
            polys.append(Polygon([vor.vertices[i] for i in region]))
    gs_vor = geopandas.GeoSeries(polys)
    t_gs_vor = gs_vor.translate(cent.x, cent.y)
    t_gs_vor.crs = geoseries_polygons.crs
    return t_gs_vor, pnts
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