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I have a very simple map (http://www.nyc.gov/html/dcp/download/bytes/nybb_15b.zip) and I have never before worked with shapefiles in any way. Can someone tell me what I need to do in order to change each borough's colour and to remove the outline? (Usually I use Python.)

The map below was made with (Geo-)Pandas. But after a few hours of research, I don't even know whether the colours could be changed with something that comes with the Anaconda package.

boros = GeoDataFrame.from_file('nybb/nybb.shp')
boros.plot()

enter image description here

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    It is something you have to change in the rendering software (geo-pandas), since SHP files do not contain colour information.
    – Uffe Kousgaard
    Commented Jul 1, 2015 at 13:27
  • Oh, that is a quite a surprise to me right now. Thanks a lot!
    – user54586
    Commented Jul 1, 2015 at 13:30

1 Answer 1

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Geopandas plot takes a colormap parameter

The parameter is called cmap. There's an alias for it called colormap but it should not be used anymore.

GeoDataFrame.plot(column=None, cmap=None, alpha=0.5, categorical=False, legend=False, axes=None)

The pandas documentation mentions colormaps such as

cmap='cubehelix'
cmap='Greens'
cmap='winter'
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  • Thanks underdark. Your links are dead. I guess these are current addresses for 1st and 2nd. BTW colour maps are ready-made choices, which I might not like for my map. Worth to see this way of assigning your own colour-choices to each feature row? (based on a given column value)
    – abu
    Commented Jan 26, 2022 at 11:59

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