[Matplotlib-users] ipython -pylab trick
I had a problem yesterday running a script in interactive mode in ipython -pylab using the gtk backend. In the script there was some expensive computation, and I wanted to break out of it by hitting CTRL-C. Because of the nastiness of signal handling across threads, this isn't possible, though Fernando tells me it is keeping him up nights. ipython prints a message that it got a CTRL-C, but can't cause the code running in the gui thread to exit cleanly. One hack/workaround solution is to check for the IPython.Shell state variable at various points in your code # some script you want to run from ipython -pylab or ipython -gthread # with "run" import IPython.Shell from pylab import figure, show, setp def ipbreak(): if IPython.Shell.KBINT: IPython.Shell.KBINT = False raise SystemExit for i in somerange: do_something_very_expensive() ipbreak() show() Then if you want to interrupt the script, you can with CTRL-C. Of course the trick is to remember to sprinkle these throughout your code ahead of time. The script will run normally outside of ipython, and as long as the function call and boolean check are cheap compared to your expensive function, shouldn't hurt performance. Thanks Fernando for the suggestion! JDH - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] datestr2num problem
hi all, I have a problem with datestr2num. All my dates are sorted in %d/%m/%Y format, but datestr2num seems to take days for months before the 12th day: 100>datas['Dates'] Sortie[100]: recarray([05/01/2006, 06/01/2006, 07/01/2006, 08/01/2006, 09/01/2006, 10/01/2006, 11/01/2006, 12/01/2006, 13/01/2006, 14/01/2006, 15/01/2006, 16/01/2006, 17/01/2006, 18/01/2006, 19/01/2006, 20/01/2006, 21/01/2006, 22/01/2006, 23/01/2006, 24/01/2006, 25/01/2006, 26/01/2006, 27/01/2006, 28/01/2006, 29/01/2006, 30/01/2006, 31/01/2006, 01/02/2006, 02/02/2006, 03/02/2006, 04/02/2006, 05/02/2006, 06/02/2006, 07/02/2006, 08/02/2006, 09/02/2006, 10/02/2006, 11/02/2006, 12/02/2006, 13/02/2006, 14/02/2006, 15/02/2006, 16/02/2006, 17/02/2006, 18/02/2006, 19/02/2006, 20/02/2006, 21/02/2006, 22/02/2006, 23/02/2006, 24/02/2006, 25/02/2006, 26/02/2006, 27/02/2006, 28/02/2006, 01/03/2006], dtype='|S10') 101>array([datetime.strftime(x, "%d/%m/%Y") for x in num2date(datestr2num(datas['Dates']) )]) Sortie[101]: array([01/05/2006, 01/06/2006, 01/07/2006, 01/08/2006, 01/09/2006, 01/10/2006, 01/11/2006, 01/12/2006, 13/01/2006, 14/01/2006, 15/01/2006, 16/01/2006, 17/01/2006, 18/01/2006, 19/01/2006, 20/01/2006, 21/01/2006, 22/01/2006, 23/01/2006, 24/01/2006, 25/01/2006, 26/01/2006, 27/01/2006, 28/01/2006, 29/01/2006, 30/01/2006, 31/01/2006, 02/01/2006, 02/02/2006, 02/03/2006, 02/04/2006, 02/05/2006, 02/06/2006, 02/07/2006, 02/08/2006, 02/09/2006, 02/10/2006, 02/11/2006, 02/12/2006, 13/02/2006, 14/02/2006, 15/02/2006, 16/02/2006, 17/02/2006, 18/02/2006, 19/02/2006, 20/02/2006, 21/02/2006, 22/02/2006, 23/02/2006, 24/02/2006, 25/02/2006, 26/02/2006, 27/02/2006, 28/02/2006, 03/01/2006], dtype='|S10') -- Lionel Roubeyrie - [EMAIL PROTECTED] LIMAIR http://www.limair.asso.fr - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] waiting on a point
I'm writing a program with a graph. You have to select segments of the
graph, which requires 2 points.
is there a way to write this with a while loop, where
while(morepoints == "yes")
{
while(waiting on point 1)
{
check if point 1 is a good point
if point 1 is good
break from while
}
while(waiting on point 2)
{
check if point 2 is a good point
if point 2 is good
break from while
}
ask user if they want more points
if yes break from while
}
working with widgets is new to me and im used to working with while loops
and what not. I've been just checking to see if i have 0 or 1 points in
the on_point wxmpl code, and then if i have 1 and the next point is good
opening a dialog to ask and then resetting number of pionts to 0.
anyone have any better ideas of how to do this? the amount of
"global"/"self.points" variables is driving me nuts
-
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Re: [Matplotlib-users] waiting on a point
> "Kenny" == Kenny Ortmann <[EMAIL PROTECTED]> writes:
Kenny> I'm writing a program with a graph. You have to select
Kenny> segments of the graph, which requires 2 points.
Kenny> working with widgets is new to me and im used to working
Kenny> with while loops and what not. I've been just checking to
Kenny> see if i have 0 or 1 points in the on_point wxmpl code, and
Kenny> then if i have 1 and the next point is good opening a
Kenny> dialog to ask and then resetting number of pionts to 0.
Kenny> anyone have any better ideas of how to do this? the amount
Kenny> of "global"/"self.points" variables is driving me nuts
If you want to select a horizontal or vertical region of the graph,
eg, xmin, xmax, the SpanSelector widget is your friend. I believe
recent versions of the wxmpl code worth with mpl events and widgets,
but I haven't tested this.
#!/usr/bin/env python
"""
The SpanSelector is a mouse widget to select a vmin/vmax
range. When you left click drag in the axes, a rectangle shows the
selected region. When you release, the rectangle disappears and a
callback is called with min/max.
"""
import pylab
from matplotlib.widgets import SpanSelector
fig = pylab.figure(figsize=(8,6))
ax = fig.add_subplot(211, axisbg='#CC')
x,y = 4*(pylab.rand(2,100)-.5)
ax.plot(x,y,'o')
ax.set_xlim(-2,2)
ax.set_ylim(-2,2)
ax.set_title('Press left mouse button and drag to test')
def onselect(vmin, vmax):
print vmin, vmax
# set useblit True on gtkagg for enhanced performance
span = SpanSelector(ax, onselect, 'horizontal', useblit=False,
rectprops=dict(alpha=0.5, facecolor='red') )
ax2 = fig.add_subplot(212)
ax2.plot([1,2,3])
span2 = SpanSelector(ax2, onselect, 'vertical')
pylab.show()
-
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Re: [Matplotlib-users] waiting on a point
On 09/19/06 15:22, John Hunter wrote: >>"Kenny" == Kenny Ortmann <[EMAIL PROTECTED]> writes: > > Kenny> I'm writing a program with a graph. You have to select > Kenny> segments of the graph, which requires 2 points. > > Kenny> working with widgets is new to me and im used to working > Kenny> with while loops and what not. I've been just checking to > Kenny> see if i have 0 or 1 points in the on_point wxmpl code, and > Kenny> then if i have 1 and the next point is good opening a > Kenny> dialog to ask and then resetting number of pionts to 0. > > Kenny> anyone have any better ideas of how to do this? the amount > Kenny> of "global"/"self.points" variables is driving me nuts > > If you want to select a horizontal or vertical region of the graph, > eg, xmin, xmax, the SpanSelector widget is your friend. Although there isn't a wxmpl event for measuring only horizontal or vertical regions, you can use the wxmpl.EVT_SELECTION event to pick a rectangular region. For an example of how that works, you can look at `demos/picking_points.py' in the wxmpl source distribution. Without knowing more about the application it's hard to recommend what to do to improve things. Perhaps you could add a button to the wxPython application that enables selection, so that the user clicks it and then picks the area of the plot to apply the function to? You could also subclass wxmpl.PlotPanel, add some basic support for the two-point selections, and then reuse that code in your application. > I believe recent versions of the wxmpl code worth with mpl events and > widgets, but I haven't tested this. Although it is possible to modify `wxmpl.py' to emit mpl events, I'm afraid that wxmpl still doesn't support mpl events or widgets out-of-the-box. There's still too much that can break if the two event-handling systems are incorrectly mixed in an application. Ken - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] segfault from svn
I just upgraded matplotlib, numpy, scipy, and ipython to currect svn. I am getting a segfault with pylab: Python 2.4.2 (#2, Sep 30 2005, 21:19:01) [GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import pylab loaded rc file /home/ryan/.matplotlib/matplotlibrc matplotlib version 0.87.5 verbose.level debug-annoying interactive is False platform is linux2 loaded modules: ['pylab', '_bisect', '__future__', 'copy_reg', 'sre_compile', 'distutils', 'itertools', '_sre', '__main__', 'popen2', 'site', '__builtin__', 'datetime', 'distutils.re', 'matplotlib.re', 'matplotlib.tempfile', 'encodings', 'pytz.datetime', 'shutil', 'distutils.string', 'dateutil', 'matplotlib.datetime', 'posixpath', '_random', 'tempfile', 'errno', 'matplotlib.warnings', 'binascii', 'encodings.codecs', 'sre_constants', 're', 'matplotlib.md5', 'os.path', 'pytz.sys', '_codecs', 'distutils.sysconfig', 'encodings.exceptions', 'pytz.sets', 'math', 'fcntl', 'stat', 'zipimport', 'string', 'warnings', 'encodings.types', 'UserDict', 'encodings.utf_8', 'matplotlib', 'distutils.os', 'sys', 'pytz.tzinfo', 'pytz', 'matplotlib.__future__', 'codecs', 'matplotlib.sys', 'readline', 'matplotlib.pytz', 'types', 'md5', 'matplotlib.dateutil', 'matplotlib.os', 'thread', 'sre', 'bisect', 'matplotlib.distutils', 'signal', 'distutils.errors', 'random', 'linecache', 'matplotlib.shutil', 'posix', 'encodings.aliases', 'sets', 'exceptions', 'sre_parse', 'pytz.bisect', 'distutils.sys', 'os', 'strop'] numerix numpy 1.0rc1.dev3190 font search path ['/usr/lib/python2.4/site-packages/matplotlib/mpl-data'] trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraMoIt.ttf trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/cmsy10.ttf trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraMoBd.ttf trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraBI.ttf trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/cmex10.ttf trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/Vera.ttf $HOME=/home/ryan CONFIGDIR=/home/ryan/.matplotlib loaded ttfcache file /home/ryan/.matplotlib/ttffont.cache Segmentation fault Help me please. I am running Ubuntu Breezy Ryan - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] segfault from svn
If I change numerix to numarray, this goes away. Is anyone else out there successfully running svn mpl with: In [2]: numpy.__version__ Out[2]: '1.0rc1.dev3190' In [3]: matplotlib.__version__ Out[3]: '0.87.5' Thanks, Ryan On 9/19/06, Ryan Krauss <[EMAIL PROTECTED]> wrote: > I just upgraded matplotlib, numpy, scipy, and ipython to currect svn. > I am getting a segfault with pylab: > > Python 2.4.2 (#2, Sep 30 2005, 21:19:01) > [GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. > >>> import pylab > loaded rc file /home/ryan/.matplotlib/matplotlibrc > matplotlib version 0.87.5 > verbose.level debug-annoying > interactive is False > platform is linux2 > loaded modules: ['pylab', '_bisect', '__future__', 'copy_reg', > 'sre_compile', 'distutils', 'itertools', '_sre', '__main__', 'popen2', > 'site', '__builtin__', 'datetime', 'distutils.re', 'matplotlib.re', > 'matplotlib.tempfile', 'encodings', 'pytz.datetime', 'shutil', > 'distutils.string', 'dateutil', 'matplotlib.datetime', 'posixpath', > '_random', 'tempfile', 'errno', 'matplotlib.warnings', 'binascii', > 'encodings.codecs', 'sre_constants', 're', 'matplotlib.md5', > 'os.path', 'pytz.sys', '_codecs', 'distutils.sysconfig', > 'encodings.exceptions', 'pytz.sets', 'math', 'fcntl', 'stat', > 'zipimport', 'string', 'warnings', 'encodings.types', 'UserDict', > 'encodings.utf_8', 'matplotlib', 'distutils.os', 'sys', 'pytz.tzinfo', > 'pytz', 'matplotlib.__future__', 'codecs', 'matplotlib.sys', > 'readline', 'matplotlib.pytz', 'types', 'md5', 'matplotlib.dateutil', > 'matplotlib.os', 'thread', 'sre', 'bisect', 'matplotlib.distutils', > 'signal', 'distutils.errors', 'random', 'linecache', > 'matplotlib.shutil', 'posix', 'encodings.aliases', 'sets', > 'exceptions', 'sre_parse', 'pytz.bisect', 'distutils.sys', 'os', > 'strop'] > numerix numpy 1.0rc1.dev3190 > font search path ['/usr/lib/python2.4/site-packages/matplotlib/mpl-data'] > trying fontname > /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraMoIt.ttf > trying fontname > /usr/lib/python2.4/site-packages/matplotlib/mpl-data/cmsy10.ttf > trying fontname > /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraMoBd.ttf > trying fontname > /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraBI.ttf > trying fontname > /usr/lib/python2.4/site-packages/matplotlib/mpl-data/cmex10.ttf > trying fontname /usr/lib/python2.4/site-packages/matplotlib/mpl-data/Vera.ttf > $HOME=/home/ryan > CONFIGDIR=/home/ryan/.matplotlib > loaded ttfcache file /home/ryan/.matplotlib/ttffont.cache > Segmentation fault > > > Help me please. I am running Ubuntu Breezy > > Ryan > - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] segfault from svn
> "Ryan" == Ryan Krauss <[EMAIL PROTECTED]> writes: Ryan> I just upgraded matplotlib, numpy, scipy, and ipython to Ryan> currect svn. I am getting a segfault with pylab: Try rm -rf the build subdir and recompile -- I just updated the SWIG srcs which may be causing your problem. JDH Ryan> Python 2.4.2 (#2, Sep 30 2005, 21:19:01) [GCC 4.0.2 20050808 Ryan> (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2 Type "help", Ryan> "copyright", "credits" or "license" for more information. import pylab Ryan> loaded rc file /home/ryan/.matplotlib/matplotlibrc Ryan> matplotlib version 0.87.5 verbose.level debug-annoying Ryan> interactive is False platform is linux2 loaded modules: Ryan> ['pylab', '_bisect', '__future__', 'copy_reg', Ryan> 'sre_compile', 'distutils', 'itertools', '_sre', '__main__', Ryan> 'popen2', 'site', '__builtin__', 'datetime', 'distutils.re', Ryan> 'matplotlib.re', 'matplotlib.tempfile', 'encodings', Ryan> 'pytz.datetime', 'shutil', 'distutils.string', 'dateutil', Ryan> 'matplotlib.datetime', 'posixpath', '_random', 'tempfile', Ryan> 'errno', 'matplotlib.warnings', 'binascii', Ryan> 'encodings.codecs', 'sre_constants', 're', 'matplotlib.md5', Ryan> 'os.path', 'pytz.sys', '_codecs', 'distutils.sysconfig', Ryan> 'encodings.exceptions', 'pytz.sets', 'math', 'fcntl', Ryan> 'stat', 'zipimport', 'string', 'warnings', Ryan> 'encodings.types', 'UserDict', 'encodings.utf_8', Ryan> 'matplotlib', 'distutils.os', 'sys', 'pytz.tzinfo', 'pytz', Ryan> 'matplotlib.__future__', 'codecs', 'matplotlib.sys', Ryan> 'readline', 'matplotlib.pytz', 'types', 'md5', Ryan> 'matplotlib.dateutil', 'matplotlib.os', 'thread', 'sre', Ryan> 'bisect', 'matplotlib.distutils', 'signal', Ryan> 'distutils.errors', 'random', 'linecache', Ryan> 'matplotlib.shutil', 'posix', 'encodings.aliases', 'sets', Ryan> 'exceptions', 'sre_parse', 'pytz.bisect', 'distutils.sys', Ryan> 'os', 'strop'] numerix numpy 1.0rc1.dev3190 font search path Ryan> ['/usr/lib/python2.4/site-packages/matplotlib/mpl-data'] Ryan> trying fontname Ryan> /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraMoIt.ttf Ryan> trying fontname Ryan> /usr/lib/python2.4/site-packages/matplotlib/mpl-data/cmsy10.ttf Ryan> trying fontname Ryan> /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraMoBd.ttf Ryan> trying fontname Ryan> /usr/lib/python2.4/site-packages/matplotlib/mpl-data/VeraBI.ttf Ryan> trying fontname Ryan> /usr/lib/python2.4/site-packages/matplotlib/mpl-data/cmex10.ttf Ryan> trying fontname Ryan> /usr/lib/python2.4/site-packages/matplotlib/mpl-data/Vera.ttf Ryan> $HOME=/home/ryan CONFIGDIR=/home/ryan/.matplotlib loaded Ryan> ttfcache file /home/ryan/.matplotlib/ttffont.cache Ryan> Segmentation fault Ryan> Help me please. I am running Ubuntu Breezy Ryan> Ryan Ryan> - Ryan> Take Surveys. Earn Cash. Influence the Future of IT Join Ryan> SourceForge.net's Techsay panel and you'll get the chance to Ryan> share your opinions on IT & business topics through brief Ryan> surveys -- and earn cash Ryan> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV Ryan> ___ Ryan> Matplotlib-users mailing list Ryan> Matplotlib-users@lists.sourceforge.net Ryan> https://lists.sourceforge.net/lists/listinfo/matplotlib-users - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] segfault from svn
> "Ryan" == Ryan Krauss <[EMAIL PROTECTED]> writes: Ryan> I seem to be o.k. now. I tried setup.py clean. That Ryan> doesn't remove the build dir? No, it only rebuilds what is needed, but if the recursive dependency analysis is broken, you can get into an inconsistent state. This happens most commonly when headers are modified, because this doesn't trigger rebuilds of the *.cxx files that include them. In this case, I rebuilt the swig runtime headers with a more recent version of SWIG to help Charlie try and get python2.5 builds going. Note to other svn users: flush your build subdir before trying to rebuild after a recent svn update. See also http://matplotlib.sourceforge.net/faq.html#FAILURE JDH - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
