geopandas.GeoDataFrame.set_geometry¶
- GeoDataFrame.set_geometry(col, drop=False, inplace=False, crs=None)¶
Set the GeoDataFrame geometry using either an existing column or the specified input. By default yields a new object.
The original geometry column is replaced with the input.
- Parameters
- colcolumn label or array
- dropboolean, default False
Delete column to be used as the new geometry
- inplaceboolean, default False
Modify the GeoDataFrame in place (do not create a new object)
- crspyproj.CRS, optional
Coordinate system to use. The value can be anything accepted by
pyproj.CRS.from_user_input(), such as an authority string (eg “EPSG:4326”) or a WKT string. If passed, overrides both DataFrame and col’s crs. Otherwise, tries to get crs from passed col values or DataFrame.
- Returns
- GeoDataFrame
See also
GeoDataFrame.rename_geometryrename an active geometry column
Examples
>>> from shapely.geometry import Point >>> d = {'col1': ['name1', 'name2'], 'geometry': [Point(1, 2), Point(2, 1)]} >>> gdf = geopandas.GeoDataFrame(d, crs="EPSG:4326") >>> gdf col1 geometry 0 name1 POINT (1.00000 2.00000) 1 name2 POINT (2.00000 1.00000)
Passing an array:
>>> df1 = gdf.set_geometry([Point(0,0), Point(1,1)]) >>> df1 col1 geometry 0 name1 POINT (0.00000 0.00000) 1 name2 POINT (1.00000 1.00000)
Using existing column:
>>> gdf["buffered"] = gdf.buffer(2) >>> df2 = gdf.set_geometry("buffered") >>> df2.geometry 0 POLYGON ((3.00000 2.00000, 2.99037 1.80397, 2.... 1 POLYGON ((4.00000 1.00000, 3.99037 0.80397, 3.... Name: buffered, dtype: geometry