gemgis.vector.intersections_polygons_polygons#

gemgis.vector.intersections_polygons_polygons(polygons1: Union[geopandas.geodataframe.GeoDataFrame, List[shapely.geometry.polygon.Polygon]], polygons2: Union[geopandas.geodataframe.GeoDataFrame, List[shapely.geometry.polygon.Polygon]]) → List[shapely.geometry.base.BaseGeometry]#

Calculating the intersections between a list of Polygons

Parameters

  • polygons1 (Union[gpd.geodataframe.GeoDataFrame, List[shapely.geometry.polygon.Polygon]]) – List of Polygons or GeoDataFrame containing Polygons to be intersected

  • polygons2 (Union[gpd.geodataframe.GeoDataFrame, List[shapely.geometry.polygon.Polygon]]) – List of Polygons or GeoDataFrame containing Polygons to be intersected

Returns

intersections – List of intersected geometries

Return type

List[shapely.geometry.base.BaseGeometry]

New in version 1.0.x.

Example

>>> # Loading Libraries and creating Polygon
>>> import gemgis as gg
>>> from shapely.geometry import Polygon
>>> polygon1 = Polygon([[0, 0], [10, 0], [10, 10], [0, 10], [0, 0]])
>>> polygon1.wkt
'POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))'

>>> # Creating list of polygons
>>> polygons1 = [polygon1, polygon1]

>>> # Creating second polygon
>>> polygon2 = Polygon([[10, 0], [20, 0], [20, 10], [10, 10], [10, 0]])
>>> polygon2.wkt
'POLYGON ((10 0, 20 0, 20 10, 10 10, 10 0))'

>>> # Creating list of polygons
>>> polygons2 = [polygon2, polygon2]

>>> # Calculating intersections between polygons and polygons
>>> intersection = gg.vector.intersections_polygons_polygons(polygons1=polygons1, polygons2=polygons2)
>>> intersection
[<shapely.geometry.linestring.LineString at 0x231eaf4dd90>,
<shapely.geometry.linestring.LineString at 0x231ec6e8df0>,
 <shapely.geometry.linestring.LineString at 0x231eaf4dc70>,
 <shapely.geometry.linestring.LineString at 0x231eaf4dd00>]

>>> # Inspecting the first element of the list
>>> intersection[0].wkt
'LINESTRING (10 0, 10 10)'

>>> # Inspecting the second element of the list
>>> intersection[1].wkt
'LINESTRING (10 0, 10 10)'

>>> # Inspecting the third element of the list
>>> intersection[2].wkt
'LINESTRING (10 0, 10 10)'

>>> # Inspecting the fourth element of the list
>>> intersection[3].wkt
'LINESTRING (10 0, 10 10)'

See also

intersection_polygon_polygon

Intersecting a polygon with a polygon

intersections_polygon_polygons

Intersecting a polygons with multiple polygons

extract_xy_from_polygon_intersections

Extracting intersections between multiple polygons