[matplotlib-devel] matplotlib hangs

2008-06-24 Thread Nils Wagner
Hi all,

Since *yesterday* I have some trouble with pylab.
Some program hang. I cannot use Ctrl C to kill them.
Ctrl Z works. If I use ps I get

  1091 pts/500:00:02 python
  1119 pts/500:00:00 gs defunct

gs is somehow connected to my problem.

I can kill the job by kill -9 1091. Then the  gs process 
(1119) also vanishes.

Any pointer ?
I am using svn from trunk.

Nils

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Re: [matplotlib-devel] matplotlib hangs

2008-06-24 Thread Darren Dale
On Tuesday 24 June 2008 09:22:34 am Nils Wagner wrote:
 Hi all,

 Since *yesterday* I have some trouble with pylab.
 Some program hang. I cannot use Ctrl C to kill them.
 Ctrl Z works. If I use ps I get

   1091 pts/500:00:02 python
   1119 pts/500:00:00 gs defunct

 gs is somehow connected to my problem.

 I can kill the job by kill -9 1091. Then the  gs process
 (1119) also vanishes.

 Any pointer ?
 I am using svn from trunk.

Help us help you. Give us something to go on.

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Re: [matplotlib-devel] matplotlib hangs

2008-06-24 Thread John Hunter
On Tue, Jun 24, 2008 at 9:17 AM, Nils Wagner
[EMAIL PROTECTED] wrote:

 Thank you for your prompt reply and sorry for my rudimental bug report.

 BTW, is the transparency option for png files in progress ?

I believe the unspoken consensus was it is easy to set the alpha on
the figurePatch and axesPatch so a global alpha was unneccessary.
Typically one wants the background to be translucent, but not every
figure element.   If there is a use case where one wants *every*
figure element to be translucent with the same alpha, we can
reconsider.  For PNGs however, postprocessing the alpha is easy, and
one can do this in mpl.

JDH

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Re: [matplotlib-devel] matplotlib hangs

2008-06-24 Thread Fernando Perez
On Tue, Jun 24, 2008 at 6:59 AM, John Hunter [EMAIL PROTECTED] wrote:

 My fault -- I was working on adding an idle event handler across
 backends and implemented something using threads for tkagg and haven't
 solved the problem of cross thread signal handling.

That's a nasty problem.  See
http://sebulba.wikispaces.com/recipe+thread2 for info, and IPython
implements that trick in Shell.py, look for HAS_CTYPES in there and
see the signal handlers that are in that section.

It's never 100% reliable, but the addition of this trick did help a
lot for -pylab.  I don't know if it will do the trick for you.

Cheers,

f

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