Re: [Matplotlib-users] Clearing A Figure (I Know That This Has Been Posted Before But I Does Not Work For Me)

2010-05-26 Thread Thistleryver 

w/o seeing the entire code it is difficult to diagnose.  Nothing looks
wrong with your code.  However, for full control I suggest you use the
API; see examples at
http://matplotlib.sourceforge.net/examples/api/index.html and take a
look at the artist tutorial at
http://matplotlib.sourceforge.net/users/artists.html.

Thank you.  The tutorial was very helpful.  For a moment I thought I might
have found the answer with the lines.remove() function but alas, it did not
make a difference yet again.  :(  I am starting to feel that this is a
problem with my setup rather than my code.  I may have to try this on
someone else's computer.

In a nutshell

fig = plt.figure()
ax = fig.add_subplot(111)
for param in myparams:
fig.clf()
ax.plot(something_with(param))
ax.set_ylabel('Sum Squared Error')
ax.set_title('Plot of Iris Training Errors')
ax.set_ylim(ymin=0)
outfilename = '%d.png'%param
fig.savefig(outfilename)

This is almost exactly the same as something else I have tried but this is
all to no avail.  I have posted all of my code at
http://code-bin.homedns.org/653 if anyone has time to look at it.
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[Matplotlib-users] Clearing A Figure (I Know That This Has Been Posted Before But I Does Not Work For Me)

2010-05-25 Thread Thistleryver 

I am attempting to run a lot of tests automatically and generate a graph for
each one.  However, at the moment, the previous graph remains on the figure
and the next plot is drawn over it.

I have read extensively the documentation and I have tried a whole lot of
different commands but to no avail.  In the previous post it said to use
pylab.clf() which is exactly what I've been trying to use.

So far I have used pylab.cla(), pylab.clf() and pylab.close() although I
believe that this only closes an open figure window.  I have no idea why it
is not working now especially since it would appear that my question had
already been answered in both the documentation and the forums.

I am using Python 2.6.4 on Ubuntu Linux.

Here is the relevant code I am using:
pylab.plot(xAxis, TrainingPoints, 'b-')

pylab.plot(xAxis, TestPoints, 'r-')

pylab.xlabel('Epochs')

pylab.ylabel('Sum Squared Error')

pylab.title('Plot of Iris Training Errors')

outfilename = str(int(LEARNING_RATE)) + .png
print outfilename
pylab.ylim(ymin=0)
pylab.savefig(outfilename)
pylab.cla()
pylab.clf()

I really hope one of you can spot an error otherwise I am completely stuck.
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Re: [Matplotlib-users] Clearing A Figure (I Know That This Has Been Posted Before But I Does Not Work For Me)

2010-05-25 Thread John Hunter 
On Tue, May 25, 2010 at 4:08 AM, Thistleryver mhar...@ec.auckland.ac.nz wrote:

 I am attempting to run a lot of tests automatically and generate a graph for
 each one.  However, at the moment, the previous graph remains on the figure
 and the next plot is drawn over it.

 I have read extensively the documentation and I have tried a whole lot of
 different commands but to no avail.  In the previous post it said to use
 pylab.clf() which is exactly what I've been trying to use.

 So far I have used pylab.cla(), pylab.clf() and pylab.close() although I
 believe that this only closes an open figure window.  I have no idea why it
 is not working now especially since it would appear that my question had
 already been answered in both the documentation and the forums.

 I am using Python 2.6.4 on Ubuntu Linux.

 Here is the relevant code I am using:
        pylab.plot(xAxis, TrainingPoints, 'b-')

        pylab.plot(xAxis, TestPoints, 'r-')

        pylab.xlabel('Epochs')

        pylab.ylabel('Sum Squared Error')

        pylab.title('Plot of Iris Training Errors')

        outfilename = str(int(LEARNING_RATE)) + .png
        print outfilename
        pylab.ylim(ymin=0)
        pylab.savefig(outfilename)
        pylab.cla()
        pylab.clf()

w/o seeing the entire code it is difficult to diagnose.  Nothing looks
wrong with your code.  However, for full control I suggest you use the
API; see examples at
http://matplotlib.sourceforge.net/examples/api/index.html and take a
look at the artist tutorial at
http://matplotlib.sourceforge.net/users/artists.html.

In a nutshell

fig = plt.figure()
ax = fig.add_subplot(111)
for param in myparams:
fig.clf()
ax.plot(something_with(param))
ax.set_ylabel('Sum Squared Error')
ax.set_title('Plot of Iris Training Errors')
ax.set_ylim(ymin=0)
outfilename = '%d.png'%param
fig.savefig(outfilename)

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