momepy.Elongation#

class momepy.Elongation(gdf)[source]#

Calculates the elongation of each object seen as elongation of its minimum bounding rectangle.

\[{{p - \sqrt{p^2 - 16a}} \over {4}} \over {{{p} \over {2}} - {{p - \sqrt{p^2 - 16a}} \over {4}}}\]

where a is the area of the object and p its perimeter.

Based on [Gil et al., 2012].

Parameters
gdfGeoDataFrame

A GeoDataFrame containing objects.

Examples

>>> buildings_df['elongation'] = momepy.Elongation(buildings_df).series
>>> buildings_df['elongation'][0]
0.9082437463675544
Attributes
eSeries

A Series containing resulting values.

gdfGeoDataFrame

The original GeoDataFrame.

__init__(gdf)[source]#

Methods

__init__(gdf)