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pythoncolorspolygongeopandasfolium

geopandas .explore - How to set colormap opacity?

I am plotting polygon map of a city district and set colormap base on area, I would like to set background tile as OpenStreetMap. but the result is that, with many details and colors of the OpenStreetMap, I feel quite fussy about how it looks.

import geopandas as gpd
df_polygon = gpd.read_file(path)

import folium
m=df_polygon.explore(column='AREA_BMA'
                    ,tooltip={"SUBDISTR_1"}
                    ,popup=True
                    ,cmap='Greens'
                    ,legend=False
                    ,style_kwds=dict(color="black",weight=1, opacity=0.4)
                    ,name="Polygon")

folium.LayerControl().add_to(m)

m

enter image description here

I have tried using ...

opacity=0.7
min_opacity=0.7
fillOpacity=0.7
alpha=0.7

but got Error: unexpected keyword argument.

and also tried to set opacity of openstreetmap, but this is not what I wanted.

folium.TileLayer('openstreetmap', control=True, opacity=0.3,name="openstreetmap opacity 0.3").add_to(m)
folium.LayerControl().add_to(m)

enter image description here

Would anybody know a way to set the opacity of colormap?

Solution

  • You need to pass fillOpacity within style_kwds.

    m=df_polygon.explore(column='AREA_BMA',
                    tooltip={"SUBDISTR_1"},
                    popup=True,
                    cmap='Greens',
                    legend=False,
                    style_kwds=dict(color="black",weight=1, opacity=0.4, fillOpacity=.7),
                    name="Polygon"),