CODEWITHSUNDEEP
pythonmatplotliblegend
alexander.baker
alexander.baker

Reputation: 13

Customising legend in Matplotlib

I’m trying to customise individual legend labels. In the example below, the legend contains two items. I’d like to make the text bold for only the second legend label.

Here’s a general outline of the code:

leg = plt.legend()
for text in leg.get_texts():
    text.set_fontweight...

Here’s a runnable example:

import matplotlib.pyplot as plt
X=range(10)
Y=range(100,110)
Z=range(105,115)
plt.plot(X,Y,label='normal')
plt.plot(X,Z,label='bold')
fontweights=['normal','bold']
leg=plt.legend()
for fw,text in zip(fontweights,leg.get_texts()):
    text.set_fontweight(fw)
plt.show()

Here's the output: enter image description here

The plot produced shows that set_fontweight() changes both labels to bold. So is this a bug with set_fontweight(), or am I doing something wrong?

Similar functions, such as text.set_color(), can be used to modify legend labels individually.

Lastly, I’m using matplotlib version 3.2.2.

Thanks!

Upvotes: 1

Views: 315

Answers (1)

Tarje Bargheer
Tarje Bargheer

Reputation: 175

I have matplotlib 3.3.4 running, and get a bold and unbold legend entry - see attached image - so I think an upgrade should fix the problem.

enter image description here

Upvotes: 1

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