dask_geopandas.GeoSeries.scale

GeoSeries.scale(xfact=1.0, yfact=1.0, zfact=1.0, origin='center')

Returns a GeoSeries with scaled geometries.

This docstring was copied from geopandas.base.GeoPandasBase.scale.

Some inconsistencies with the Dask version may exist.

The geometries can be scaled by different factors along each dimension. Negative scale factors will mirror or reflect coordinates.

See http://shapely.readthedocs.io/en/latest/manual.html#shapely.affinity.scale for details.

Parameters:

xfact, yfact, zfactfloat, float, float

Scaling factors for the x, y, and z dimensions respectively.

originstring, Point, or tuple

The point of origin can be a keyword ‘center’ for the 2D bounding box center (default), ‘centroid’ for the geometry’s 2D centroid, a Point object or a coordinate tuple (x, y, z).

Examples

>>> from shapely.geometry import Point, LineString, Polygon  
>>> s = geopandas.GeoSeries(  
...     [
...         Point(1, 1),
...         LineString([(1, -1), (1, 0)]),
...         Polygon([(3, -1), (4, 0), (3, 1)]),
...     ]
... )
>>> s  
0                              POINT (1.00000 1.00000)
1       LINESTRING (1.00000 -1.00000, 1.00000 0.00000)
2    POLYGON ((3.00000 -1.00000, 4.00000 0.00000, 3...
dtype: geometry

>>> s.scale(2, 3)  
0                              POINT (1.00000 1.00000)
1       LINESTRING (1.00000 -2.00000, 1.00000 1.00000)
2    POLYGON ((2.50000 -3.00000, 4.50000 0.00000, 2...
dtype: geometry

>>> s.scale(2, 3, origin=(0, 0))  
0                              POINT (2.00000 3.00000)
1       LINESTRING (2.00000 -3.00000, 2.00000 0.00000)
2    POLYGON ((6.00000 -3.00000, 8.00000 0.00000, 6...
dtype: geometry