blocksnet.utils.helpers

Some helping functions used to perform certain spatial operations and can be used in different modules.

Functions

`drop_contained_geometries`(gdf)	Drops geometries that are contained inside other geometries.
`fill_holes`(gdf)	Fills holes in geometries of a given GeoDataFrame
`filter_bottlenecks`(gdf, projected_crs[, ...])	Divides geometries in narrow places and removes small geometries.

blocksnet.utils.helpers.fill_holes(gdf)[source]

Fills holes in geometries of a given GeoDataFrame

Variables:: gdf (gpd.GeoDataFrame) – GeoDataFrame with geometries to be filled.
Returns:: gdf – GeoDataFrame with filled geometries.
Return type:: gpd.GeoDataFrame

blocksnet.utils.helpers.drop_contained_geometries(gdf)[source]

Drops geometries that are contained inside other geometries.

Variables:: gdf (gpd.GeoDataFrame) – GeoDataFrame with contained geometries.
Returns:: gdf – GeoDataFrame without contained geometries.
Return type:: gpd.GeoDataFrame

blocksnet.utils.helpers.filter_bottlenecks(gdf, projected_crs, min_width=40)[source]

Divides geometries in narrow places and removes small geometries.

Variables:

gdf (gpd.GeoDataFrame) – GeoDataFrame with contained geometries.
projected_crs (int or pyproj.CRS) – Metric projected CRS of a given area.
min_width (int or float) – Minimum allowed width of geometries in resulting GeoDataFrame.

Returns:

gdf – GeoDataFrame with processed geometries.

Return type:

gpd.GeoDataFrame