momepy.Convexity#

class momepy.Convexity(gdf, areas=None)[source]#

Calculates the Convexity index of each object in a given GeoDataFrame.

\[area \over \textit{convex hull area}\]

Adapted from [Dibble et al., 2017].

Parameters
gdfGeoDataFrame

A GeoDataFrame containing objects.

areasstr, list, np.array, pd.Series (default None)

The name of the dataframe column, np.array, or pd.Series where area values stored. If set to None, this function will calculate areas during the process without saving them separately.

Examples

>>> buildings_df['convexity'] = momepy.Convexity(buildings_df).series
>>> buildings_df['convexity'][0]
0.8151964258521672
Attributes
seriesSeries

A Series containing resulting values.

gdfGeoDataFrame

The original GeoDataFrame.

areasSeries

A Series containing used area values.

__init__(gdf, areas=None)[source]#

Methods

__init__(gdf[, areas])