Python: Change the label of a matplotlib button on click

Question

How do you change the label of a matplotlib button on clicking it? Like if I have a matplotlib button with the label "Before", I want to click it and change the label to "After". How do I do this? I feel that I should know this but I really can't find anything on this online or in the documentation.

You capture the click event, then programatically change the label. Event handling here: matplotlib.org/1.3.1/users/event_handling.html — Gerrat
– Gerrat, Commented May 16, 2014 at 23:11

Joran Beasley · Accepted Answer · 2014-05-17 00:08:04Z

10

assuming this example http://matplotlib.org/1.3.1/examples/widgets/buttons.html

bprev.label="A new Label!" #actually this doesnt work...

I figured this out with next to no knowledge of buttons simply by looking at the docs (really just glancing at them) http://matplotlib.org/1.3.1/api/widgets_api.html#Button

a little more experimentation led me to

bprive.label.set_text("A new label") # works

edited May 17, 2014 at 0:08

answered May 16, 2014 at 23:32

Joran Beasley

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4 Comments

Joran Beasley Over a year ago

you probably have to have interactive mode on ion() I think ... or it would not actually update the image

ndb Over a year ago

didn't work either. Maybe I'll try something else. Thanks for the answers!

Joran Beasley Over a year ago

@lkloh see edit :P apparently i was wrong initially

Christian Baumann Over a year ago

I needed to call plt.draw() after for the change to take effect.

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