matplotlib legend: How to specify font weight?

Question

What is the best way to specify the font weight for a matplotlib legend? I can use:

matplotlib.rcParams.update({'legend.fontsize':12})

to set the font size but when I use

matplotlib.rcParams.update({'legend.fontweight':'bold'}

It complains that "'legend.fontweight' is not a valid rc parameter"

Ffisegydd · Accepted Answer · 2016-02-21 15:27:00Z

16

You can pass parameters into plt.legend using the prop argument. This dictionary allows you to select text properties for the legend.

import matplotlib
import matplotlib.pyplot as plt

legend_properties = {'weight':'bold'}

plt.plot([1,2,3], [4,5,6], label='Test')
plt.legend(prop=legend_properties)

plt.show()

answered Feb 21, 2016 at 15:27

Ffisegydd

54k16 gold badges151 silver badges125 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

DanHickstein Over a year ago

Thanks for this answer! You can include the properties on the same line as the call to legend, like: plt.legend(prop=dict(weight='bold')

Jared Over a year ago

Is it possible to set this value in the mpstyle file?

Maksym Ganenko Over a year ago

..also, if you like to set bold text for a specific legend record, you may enumerate legend.get_texts() and call appropriate set_weight() for each record.

Collectives™ on Stack Overflow

matplotlib legend: How to specify font weight?

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related