momepy.Elongation

class momepy.Elongation(gdf)

Calculates elongation of 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

GeoDataFrame containing objects

Examples

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

Attributes

eSeries

Series containing resulting values

gdfGeoDataFrame

original GeoDataFrame

__init__(gdf)

Methods

__init__(gdf)