Thread: Re: [Matplotlib-users] changes to plot after py2exe and resizing

s

On Nov 15, 2007 10:42 PM, C M <cmp...@gm...> wrote:
> sorry, the last email did not get the pic attached.  retrying, and text
> recopied below:
> ----------------------------------------------
>
> Using Python 2.5, wxPython 2.8.4.2 (msw-unicode) matplotlib 0.90.1
>  on winXP.  I have two questions:
>
>  1) I have a small working app that produces a matplotlib plot.
>  This is a plot embedded in wxPython (it's not using Pylab).
> When it is run as a python script, it looks fine.  However, after
> packaging it into an .exe with py2exe (using GUI2Exe to do that),
> the font and size of the axes are different:  smaller, and now in
> italics. See attached picture.  I also get the errors:
>
> C:\mycode\dist\myapp.exe\matplotlib\__init__.py:948: UserWarning: Could not
> find matplotlibrc; using defaults
> C:\mycode\dist\myapp.exe\matplotlib\__init__.py:999: UserWarning: could not
> find rc file; returning defaults
>
>  I did include in the data files this folder:
>  C:\Python25\Lib\site-packages\matplotlib\mpl-data\back.png
>
>  and in the Python packages I included:
>  pytz
>  matplotlib.numerix
>
>  2) I thought that was the only error, but now I also see that, in
>  either case (as a python script or as a .exe file), each time I
>  resize the window, and the plot resizes (it is in a wxPython
>  sizer), the color of the data line changes randomly!  It starts
>  blue, and then as I resize it it can be green, red, whatever.
>  In the picture attached, with resizing they've wound up different
>  colors, though they both started blue as they should have.

My guess is that you are calling plot in an event handler that is
triggered by a resize, and are seeing mpl's color cycler.  As for the
fonts, it looks like whatever fonts are being picked up by default
(outside of py2exe) are not being packaged by py2exe.  Make sure all
the fonts in site-pacakges/matplotlib/mpl-data are being picked up by
py2exe.  In general, as long as py2exe is picking up all of mpl-data,
I don't see why you would have trouble with fonts, your rc file, or
your icons (eg back.png).  Of course, w/o seeing any code or setup
files this is just a wild guess.

JDH

On Nov 16, 2007 9:23 AM, John Hunter <jd...@gm...> wrote:

> s
>
> On Nov 15, 2007 10:42 PM, C M <cmp...@gm...> wrote:
> > sorry, the last email did not get the pic attached.  retrying, and text
> > recopied below:
> > ----------------------------------------------
> >
> > Using Python 2.5, wxPython 2.8.4.2 (msw-unicode) matplotlib 0.90.1
> >  on winXP.  I have two questions:
> >
> >  1) I have a small working app that produces a matplotlib plot.
> >  This is a plot embedded in wxPython (it's not using Pylab).
> > When it is run as a python script, it looks fine.  However, after
> > packaging it into an .exe with py2exe (using GUI2Exe to do that),
> > the font and size of the axes are different:  smaller, and now in
> > italics. See attached picture.  I also get the errors:
> >
> > C:\mycode\dist\myapp.exe\matplotlib\__init__.py:948: UserWarning: Could
> not
> > find matplotlibrc; using defaults
> > C:\mycode\dist\myapp.exe\matplotlib\__init__.py:999: UserWarning: could
> not
> > find rc file; returning defaults
> >
> >  I did include in the data files this folder:
> >  C:\Python25\Lib\site-packages\matplotlib\mpl-data\back.png
> >
> >  and in the Python packages I included:
> >  pytz
> >  matplotlib.numerix
> >
> >  2) I thought that was the only error, but now I also see that, in
> >  either case (as a python script or as a .exe file), each time I
> >  resize the window, and the plot resizes (it is in a wxPython
> >  sizer), the color of the data line changes randomly!  It starts
> >  blue, and then as I resize it it can be green, red, whatever.
> >  In the picture attached, with resizing they've wound up different
> >  colors, though they both started blue as they should have.
>
> My guess is that you are calling plot in an event handler that is
> triggered by a resize, and are seeing mpl's color cycler.  As for the
> fonts, it looks like whatever fonts are being picked up by default
> (outside of py2exe) are not being packaged by py2exe.  Make sure all
> the fonts in site-pacakges/matplotlib/mpl-data are being picked up by
> py2exe.  In general, as long as py2exe is picking up all of mpl-data,
> I don't see why you would have trouble with fonts, your rc file, or
> your icons (eg back.png).  Of course, w/o seeing any code or setup
> files this is just a wild guess.
>
> JDH
>

The font problem turned out to be simply that I didn't realize that the
latest version of matplotlib comes with the matplotlibrc file commented out
(I had not tried to change fonts before so hadn't noticed I couldn't).
Uncommented the fonts section solved it.  Thanks for the tip.

Is there a way to disable color cycling?

cm

On Nov 17, 2007 12:26 AM, C M <cmp...@gm...> wrote:

> The font problem turned out to be simply that I didn't realize that the
> latest version of matplotlib comes with the matplotlibrc file commented out
> (I had not tried to change fonts before so hadn't noticed I couldn't).
> Uncommented the fonts section solved it.  Thanks for the tip.
>
> Is there a way to disable color cycling?

Well, you could explicitly provide the color to "plot" but this is
masking a deeper problem.  You do not want to e callng "plot" on every
window redraw event.  If you post a code snippet, we might be able to
help.

JDH

On Nov 17, 2007 7:59 AM, John Hunter <jd...@gm...> wrote:

> On Nov 17, 2007 12:26 AM, C M <cmp...@gm...> wrote:
>
> > The font problem turned out to be simply that I didn't realize that the
> > latest version of matplotlib comes with the matplotlibrc file commented
> out
> > (I had not tried to change fonts before so hadn't noticed I couldn't).
> > Uncommented the fonts section solved it.  Thanks for the tip.
> >
> > Is there a way to disable color cycling?
>
> Well, you could explicitly provide the color to "plot" but this is
> masking a deeper problem.  You do not want to e callng "plot" on every
> window redraw event.  If you post a code snippet, we might be able to
> help.
>
> JDH
>

Yeah, I believe that was what was happening.  In trying to learn to embed
plots
in wx I started from an example ("Matplotlib figure in a wx panel") found
here <http://www.scipy.org/Matplotlib_figure_in_a_wx_panel>,
and for some reason in that example the figure is calls a draw() method only
on an idle following each resize, which ultimately calls "plot".  I'm not
sure why it
is done like that.  I instead now put the draw() method just under the
__init__,
so it is drawn once initially and resized accordingly, and it works better
now.
No color changing, and in fact there had been a problem with the font
getting
distorted after a few resizes (no idea what that was about) that is now gone
too.
Very good.

Thanks very much on both issues.
CM

I was trying the covert my program into .exe file using py2exe.

I got this message:


File "pylab.pyc", line 1, in <module>
File "matplotlib\__init__.pyc", line 733, in <module>
File "matplotlib\__init__.pyc", line 273, in wrapper
File "matplotlib\__init__.pyc", line 360, in _get_data_path
RuntimeError: Could not find the matplotlib data files

Has anyone seen this before, how to solve this problem?

Thanks

Xiaoshan