Changing plot with Python and Matplotlib

Question

I have file which contains a list of coordinates. I would like to take each point and plot it one after another, creating some sort of animation.

Assuming I am getting the data like this, what should I do in order to have each point plotted for a split second and then replaced with the next one?

...
for line in f:
    data = line.split(',')
    x_coord = data[0]
    y_coord = data[1]
    ...

Maybe you can use matplotlib.animation?

Steinar Lima
– Steinar Lima

2013-10-20 23:27:26 +00:00
Commented Oct 20, 2013 at 23:27 — Steinar Lima
– Steinar Lima, Commented Oct 20, 2013 at 23:27
See questions like stackoverflow.com/questions/19470324/…

tacaswell
– tacaswell

2013-10-21 01:08:34 +00:00
Commented Oct 21, 2013 at 1:08 — tacaswell
– tacaswell, Commented Oct 21, 2013 at 1:08

Community · Accepted Answer · 2017-05-23 10:25:45Z

1

Plotting one by one isn't the answer - you're unlikely to be able to control the speed at which each plot call pops up on the screen, as that may be window-manager dependent and won't create a good user experience.

If you don't need a live animation, you could render each plot as a PNG, then use mencoder to generate the animation, as described in the Matplotlib FAQ.

If you do want a live animation, that's what matplotlib's animation is for. Steinar Lima links to a good Stack Overflow answer above.

edited May 23, 2017 at 10:25

CommunityBot

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answered Oct 20, 2013 at 23:29

Christian Ternus

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