starepandas.STAREDataFrame.stare_dissolve

STAREDataFrame.stare_dissolve(by=None, num_workers=1, geom=False, aggfunc='first', **kwargs)

Dissolves a dataframe subject to a field. I.e. grouping by a field/column. Seminal method to GeoDataFrame.dissolve()

Parameters:

by: str

column to use the dissolve on. If None, dissolve all rows.

num_workers: int

workers to use for the dissolve

geom: bool

Toggle if the geometry column is to be dissolved. Geom column Will be dropped if set to False.

aggfunc: str

aggregation function. E.g. ‘first’, ‘sum’, ‘mean’.

Examples

>>> import geopandas
>>> world = geopandas.read_file(geopandas.datasets.get_path('naturalearth_lowres'))
>>> west = world[world['continent'].isin(['Europe', 'North America'])]
>>> west = starepandas.STAREDataFrame(west, add_sids=True, level=4, add_trixels=False)
>>> west.stare_dissolve(by='continent', aggfunc='sum') 
                                                           stare  ...  gdp_md_est
continent                                                         ...
Europe         [648518346341351428, 900719925474099204, 10448...  ...  25284877.0
North America  [1170935903116328964, 1173187702930014212, 117...  ...  23505137.0