dtoolkit.geoaccessor.geodataframe.select_geom_type#

dtoolkit.geoaccessor.geodataframe.select_geom_type(df: GeoDataFrame, geom_type: Literal['Point', 'MultiPoint', 'LineString', 'LinearRing', 'MultiLineString', 'Polygon', 'MultiPolygon', 'GeometryCollection'], /, complement: bool = False) → GeoDataFrame[source]#

Select geometries by geometry type.

Parameters

geom_type{“Point”, “MultiPoint”, “LineString”, “LinearRing”, “MultiLineString”, “Polygon”, “MultiPolygon”, “GeometryCollection”}: Geometry type.
complementbool, default False: If True, do operation reversely.

Returns

GeoDataFrame: GeoDataFrame with selected geometries.

See also

geopandas.GeoSeries.geom_type
dtoolkit.geoaccessor.geoseries.select_geom_type

Examples

>>> import dtoolkit.geoaccessor
>>> import pandas as pd
>>> df = pd.DataFrame({
...     "wkt": [
...         "POINT (1 1)",
...         "MULTIPOINT (1 1, 2 2)",
...         "LINESTRING (1 1, 2 2)",
...         "LINEARRING (0 0, 0 1, 1 1, 1 0, 0 0)",
...         "MULTILINESTRING ((1 1, 2 2), (3 3, 4 4))",
...         "POLYGON ((0 0, 0 1, 1 1, 1 0, 0 0))",
...         "MULTIPOLYGON (((0 0, 0 1, 1 1, 1 0, 0 0)))",
...         "GEOMETRYCOLLECTION (POINT (1 1), LINESTRING (1 1, 2 2))",
...     ],
... }).from_wkt("wkt").drop(columns="wkt")
>>> df
                                            geometry
0                            POINT (1.00000 1.00000)
1      MULTIPOINT (1.00000 1.00000, 2.00000 2.00000)
2      LINESTRING (1.00000 1.00000, 2.00000 2.00000)
3  LINEARRING (0.00000 0.00000, 0.00000 1.00000, ...
4  MULTILINESTRING ((1.00000 1.00000, 2.00000 2.0...
5  POLYGON ((0.00000 0.00000, 0.00000 1.00000, 1....
6  MULTIPOLYGON (((0.00000 0.00000, 0.00000 1.000...
7  GEOMETRYCOLLECTION (POINT (1.00000 1.00000), L...
>>> df.select_geom_type("Point")
                  geometry
0  POINT (1.00000 1.00000)