matplotlib-users

Re: [Matplotlib-users] animations with subplot

[darkside <in....@gm...>]

Hello,
I'm new in matplotlib, but I have became a fat!
First of all, I have to apologize for my bad English, I hope you can
understand what I mean.
Making some programs I have found the same problem:

> -What I want? I want to plot two sets of changing data using the same
> windows.
> -The problem? My code is:
> -----------------------
> x,y = evol.plot_init()
>                 pylab.ion()
>                 pylab.subplot(211)
>                 line,=pylab.plot(x[0],x[1])
>                 pylab.draw()
>                 pylab.ylabel('Posiciones')
>                 for k in pylab.arange(Nt):
>                         x, y = evol.plot_step()
>                         line.set_ydata(x[1])
>                         pylab.draw()
>
>
>                 pylab.subplot(212)
>                 line,=pylab.plot(y[0],y[1])
>                 pylab.draw()
>                 pylab.ylabel('Momentos')
>
>                 for k in pylab.arange(Nt):
>                         x, y  = evol.plot_step()
>                         line.set_ydata(y[1])
>                         pylab.draw()
> ---------------------------------------------------------------------
> And if you run this, one draw and anim is done first, you have to wait
> it to stop, and then you can see the other want.
> The thing is that I want that the two anim figures runs at the same time.
>
> Any idea?
>

Re: [Matplotlib-users] animations with subplot

[Matthias M. <Mat...@gm...>]

Hello darkside,

I set up a little program hoping it offers a solution to your problem.

Matthias
>-------------------------------------------------------------------------------
from numpy.random import uniform 
import pylab 

Nt = 20
x,y = uniform(size=(100,Nt+1)),uniform(size=(100,Nt+1))

pylab.ion()
ax1 = pylab.subplot(211)
pylab.ylabel('Posiciones')
ax2 = pylab.subplot(212)
pylab.ylabel('Momentos')
line1,= ax1.plot(x[:,0], x[:,1])
line2,= ax2.plot(y[:,0], y[:,1])
pylab.draw()
pylab.draw()
# alternative you could use
"""
pylab.axes(ax1)
line1,= pylab.plot(x[:,0], x[:,1])
pylab.axes(ax2)
line2,= pylab.plot(y[:,0], y[:,1])
pylab.draw()
"""
for k in pylab.arange(Nt):
    line1.set_ydata(x[:,k+1])
    line2.set_ydata(y[:,k+1])
    pylab.draw()
    pylab.draw()
pylab.ioff()
pylab.show()
>-------------------------------------------------------------------