momepy.
Count
(left, right, left_id, right_id, weighted=False)[source]¶Calculate the number of elements within an aggregated structure.
Aggregated structure can be typically block, street segment or street node (their snapepd objects). Right gdf has to have
unique id of aggregated structure assigned before hand (e.g. using momepy.get_network_id()
).
If weighted=True, number of elements will be divided by the area of lenght (based on geometry type) of aggregated
element, to return relative value.
GeoDataFrame containing aggregation to analyse
GeoDataFrame containing objects to analyse
name of the column where is stored unique ID in left gdf
name of the column where is stored unique ID of aggregation in right gdf
if weighted=True, count will be divided by the area or length
References
1. Hermosilla T, Ruiz LA, Recio JA, et al. (2012) Assessing contextual descriptive features for plot-based classification of urban areas. Landscape and Urban Planning, Elsevier B.V. 106(1): 124–137. 2. Feliciotti A (2018) RESILIENCE AND URBAN DESIGN:A SYSTEMS APPROACH TO THE STUDY OF RESILIENCE IN URBAN FORM. LEARNING FROM THE CASE OF GORBALS. Glasgow.
Examples
>>> blocks_df['buildings_count'] = mm.Count(blocks_df, buildings_df, 'bID', 'bID', weighted=True).series
Series containing resulting values
original left GeoDataFrame
original right GeoDataFrame
Series containing used left ID
Series containing used right ID
used weighted value
__init__
(self, left, right, left_id, right_id, weighted=False)[source]¶Initialize self. See help(type(self)) for accurate signature.
Methods
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Initialize self. |