Remove line through marker in matplotlib legend

Question

I have a matplotlib plot generated with the following code:

import matplotlib.pyplot as pyplot  Fig, ax = pyplot.subplots() for i, (mark, color) in enumerate(zip(     ['s', 'o', 'D', 'v'], ['r', 'g', 'b', 'purple'])):     ax.plot(i+1, i+1, color=color,             marker=mark,             markerfacecolor='None',             markeredgecolor=color,             label=i)  ax.set_xlim(0,5) ax.set_ylim(0,5) ax.legend() 

with this as the generated figure:

I don't like the lines through the markers in the legend. How can I get rid of them?

Answer 1

You can specify linestyle="None" as a keyword argument in the plot command:

import matplotlib.pyplot as pyplot  Fig, ax = pyplot.subplots() for i, (mark, color) in enumerate(zip(     ['s', 'o', 'D', 'v'], ['r', 'g', 'b', 'purple'])):     ax.plot(i+1, i+1, color=color,             marker=mark,             markerfacecolor='None',             markeredgecolor=color,             linestyle = 'None',             label=`i`)  ax.set_xlim(0,5) ax.set_ylim(0,5) ax.legend(numpoints=1) pyplot.show() 

Since you're only plotting single points, you can't see the line attribute except for in the legend.

Answer 2

You can set the rcparams for the plots:

import matplotlib matplotlib.rcParams['legend.handlelength'] = 0 matplotlib.rcParams['legend.numpoints'] = 1 

All the legend.* parameters are available as keywords if you don't want the setting to apply globally for all plots. See matplotlib.pyplot.legend documentation and this related question:

legend setting (numpoints and scatterpoints) in matplotlib does not work