Experimental Physics and
Industrial Control System

"Krempasky Juraj" <[email protected]> · Wed, 30 Nov 2011 09:50:52 +0100

Hello Yan,

please have a look at http://matplotlib.sourceforge.net/examples/index.html. You can find there new and old matplotlib animation examples. The main problem with your code is that you invoke the show() recurrently.

Best regards

Juraj 

-----Original Message-----
From: [email protected] on behalf of ??
Sent: Wed 11/30/2011 9:29 AM
To: [email protected]
Subject: About matplotlib draw picture

Hello everyone:

I want to display a array realtime by matplotlib, but It seems there are some errors. Let me explain it in detail:

At first creat a array, then change the data every other 2 seconds, at the same time plot the picture every other 2 seconds, the data of picture is from the array. 

import numpy as np
import matplotlib.pyplot as plt
import time
xx=np.zeros([2,10])
for i in range(10):
    xx[0,i-1]=5*i
    xx[1,i-1]=i
    a=xx[0,:]
    b=xx[1,:]
    print xx
    plt.figure(figsize=(8,4))
    plt.plot(a,b,label="$picture$",color="red",linewidth=2)
    plt.legend()
    plt.show()
    time.sleep(2)

Does anyone who can help me? Thank you very much!

Best wishes,
===========================================
Yan Fen
Shanghai Synchrotron Radiation Facility
Shanghai Institute of Applied Physics
Chinese Academy of Sciences
Zhangheng Rd 239,Pudong Dist.,
Shanghai 201204
China
Tel:+86-21-33933225
====================================

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System