Re: [Matplotlib-users] real time plotting

2013-03-11 Thread Alan G Isaac
On 3/11/2013 1:59 PM, Neal Becker wrote: > I go through a compute loop that takes maybe a few seconds per pass, then > plot a new point on the graph. If you are willing to use TkAgg, see the TSPlot class here: https://econpy.googlecode.com/svn-history/r175/trunk/abm/gridworld/gridworld.py Alan I

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread David Hoese
I agree, I don't think that will work with mpl's animation stuff or at least I wouldn't want to do it that way. I've created GUIs that received data from a weather instrument in real-time. I did method 3 that I mentioned before because I knew the scientists using it were going to want more and

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread Neal Becker
I go through a compute loop that takes maybe a few seconds per pass, then plot a new point on the graph. Do I have to? No - I thought mpl was supposed to do this and wanted to learn how. If it really doesn't work I'll do something else. I don't think animation is correct here - I had the impres

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread David Hoese
Someone may have to correct me, but I think this has to do with the Qt4 event loop and it not being run properly. When you get into real time plotting it can get kind of tricky. In your case (I got the same results). I have made real-time PyQt4 GUIs before and have always used separate QThreads

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread Neal Becker
I added fig.canvas.show(). It still does nothing. If I add mpl.use ('GTK'), now it seems to be doing realtime plotting. import matplotlib as mpl import matplotlib.pyplot as plt plt.ion() import numpy as np fig=plt.figure() plt.axis([0,1000,0,1]) i=0 x=list() y=list() fig.canvas.show() while i

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread David Hoese
Oops forgot to change the subject line. On 3/11/13 9:34 AM, David Hoese wrote: > You likely need to "show()" the canvas. I usually do this by calling > "fig.canvas.show()" before the for loop. > Since you are using a Qt4 backend the canvas used by the figure is a > QWidget, the basic component o

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread Neal Becker
mpl is 1.2.0 Fedora linux On Mon, Mar 11, 2013 at 9:57 AM, Neal Becker wrote: > Tried with/and without plt.ion(), no difference. Nothing is drawn. When > I kill it with C-c, briefly a window is flashed. > > import matplotlib as mpl > > import matplotlib.pyplot as plt > plt.ion() > import nump

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread Neal Becker
Tried with/and without plt.ion(), no difference. Nothing is drawn. When I kill it with C-c, briefly a window is flashed. import matplotlib as mpl import matplotlib.pyplot as plt plt.ion() import numpy as np fig=plt.figure() plt.axis([0,1000,0,1]) i=0 x=list() y=list() while i <1000: temp_

Re: [Matplotlib-users] real time plotting

2013-03-11 Thread Francesco Montesano
Dear Neal, 2013/3/11 Neal Becker > I want to update a plot in real time. I did some goog search, and saw > various > answers. Trouble is, they aren't working. > > Here's a typical example: > > import matplotlib.pyplot as plt > import numpy as np > fig=plt.figure() > plt.axis([0,1000,0,1]) > >

[Matplotlib-users] real time plotting

2013-03-11 Thread Neal Becker
I want to update a plot in real time. I did some goog search, and saw various answers. Trouble is, they aren't working. Here's a typical example: import matplotlib.pyplot as plt import numpy as np fig=plt.figure() plt.axis([0,1000,0,1]) i=0 x=list() y=list() while i <1000: temp_y=np.rand

[Matplotlib-users] Real-time plotting

2007-06-11 Thread Rutkov Denis
Hello everyone! I'm seeking help with real-time plotting using Python and MatPlotLib. I've encoutered several problems so far: 1. There is no function to just add a point to the existing curve, so each time the data is updated all the curve has to be redrawn. This is not a clean solution for the