easiest way to plot x,y graphically during run-time?

Brian Blais bblais at bryant.edu
Wed Jun 3 19:32:13 CEST 2009


On Jun 3, 2009, at 12:15 , Esmail wrote:

> Gökhan SEVER wrote:
>> It seems like you want to animate your data.
>> You may want to take a look at Matplotlib examples or Mayavi for 3D
>
> I've used Matplotlib to plot points that were saved during runtime to
> a file. I wonder if I could skip that step and directly plot during
> runtime updating the graph as values changed ..

here is a sample.  again, direct questions to the matplotlib list for  
possible better ideas.


from pylab import *

# initial positions
x0=rand(5)
y0=rand(5)

ion()  # interactive on

for t in linspace(0,10,100):

     x=x0+0.1*cos(t)
     y=y0+0.1*sin(t)

     if t==0:  # first time calling
         h=plot(x,y,'o')
     else:
         h[0].set_data(x,y)

     draw()



				bb

-- 
Brian Blais
bblais at bryant.edu
http://web.bryant.edu/~bblais



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