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My question has overlap with Changing colours in GeoPandas?, but unfortunately still unanswered: I want to plot a multiline shapefile in 1 color.

import geopandas as gpd
multiline_example = gpd.read_file('multiline_example_filepath.shp')
multiline_example.plot()

This works fine so far, except that the lines have multiple random colors:

Plot with random colors

Now I simply want to assign 1 color for all lines. Is this possible, and if so, how?

What I found so far:

On the GeoPandas site, some plotting-examples are given (http://geopandas.readthedocs.io/en/latest/mapping.html). Here, they simply use 

multiline_example.plot(color='green')

However, if I try this, I get the following error:

TypeError: plot_dataframe() got an unexpected keyword argument 'color'

Why doesn't this work?

I have been able to choose a column (where the color is dependent on the column values), as well as a colormap, but the results are still different colors for different lines.

multiline_example.plot(colormap = 'Greens')
multiline_example.plot(column = 'a_column_name')

Simply by updating from GeoPandas 0.1.1 to 0.3.0. 

multiline_example.plot(color='green')

works fine now.

nmtoken
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Yannick Mister
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    what is your geopandas version ? – Delforge Nov 21 '17 at 11:57
  • That's a good question, I get where things went wrong now.. For some reason I had installed geopandas version 0.1.1. After updating to 0.3.0, everything worked fine. Sorry for bad research from my side, thanks for the clarifying question. – Yannick Mister Nov 22 '17 at 19:49

1 Answers1

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Try creating your own color map with matplotlib:

from matplotlib.colors import ListedColormap

cmap = ListedColormap(['red'], name='allred')
GeoSeries(bldgs).plot(cmap=cmap)

enter image description here

BTW I think I'm using a different version to you as colormap changed to cmap for me (0.3.0).

John Leonard
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  • Thanks for the clear answer with example. Found out now that I was using an old version, 0.1.1. After updating everything works as should, a simple plot() already shows 1 color. – Yannick Mister Nov 22 '17 at 19:55
  • No worries. I was having the opposite problem, after upgrading I no longer had colour differentiation so had to add in cmap, edgecolour and alpha to get it working like before. – John Leonard Nov 22 '17 at 22:35