matplotlib-users Mailing List for matplotlib

I upgraded to IPython 0.6.16_cvs and still have the same problem.  I get 
the same message when I run the simple_plot.py example from MPL.  I am 
running IPython with the -pylab flag.

Ryan

Ryan Krauss wrote:

> I just updated to 0.83 and I am now having a problem with Ipython.  
> Running the following code as a script produces the error message 
> below.  I am running Python 2.3.5 on Windows XP with Ipython 0.6.15.  
> I get the same message regardless of whether or not I set ion().
>
> How do I fix this?
>
> Thanks,
>
> Ryan
>
> import pylab, scipy
> x=scipy.arange(0,1,0.1)
> y=scipy.sin(2*scipy.pi*x)
>
> #pylab.ion()
> pylab.figure(1)
> pylab.plot(x,y)
>
>
> In [13]: run pylab_test.py
> --------------------------------------------------------------------------- 
>
> exceptions.AttributeError                            Traceback (most 
> recent call
> last)
>
> E:\GT\Research\Samii\modeling\TwoD\TMM_2D_scipy\<console>
>
> C:\Python23\Lib\site-packages\IPython\iplib.py in ipmagic(arg_s)
>    140     else:
>    141         magic_args = __IPYTHON__.var_expand(magic_args)
> --> 142         return fn(magic_args)
>    143
>    144 def ipalias(arg_s):
>
> C:\Python23\Lib\site-packages\IPython\Shell.py in magic_run(self, 
> parameter_s)
>    474
>    475     def magic_run(self,parameter_s=''):
> --> 476         Magic.magic_run(self,parameter_s,runner=self.mplot_exec)
>    477
>    478     # Fix the docstring so users see the original as well
>
> C:\Python23\Lib\site-packages\IPython\Magic.py in magic_run(self, 
> parameter_s, r
> unner)
>   1381                     self.shell.user_ns.update(prog_ns)
>   1382         finally:
> -> 1383             sys.argv = save_argv
>   1384         return stats
>   1385
>
> C:\Python23\Lib\site-packages\IPython\Shell.py in mplot_exec(self, 
> fname, *where
> , **kw)
>    465         self.matplotlib.interactive(isInteractive)
>    466         # make rendering call now, if the user tried to do it
> --> 467         if self.pylab.draw_if_interactive.called:
>    468             self.pylab.draw()
>    469             self.pylab.draw_if_interactive.called = False
>
> AttributeError: 'function' object has no attribute 'called'
>
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by the 'Do More With Dual!' webinar 
> happening
> July 14 at 8am PDT/11am EDT. We invite you to explore the latest in dual
> core and dual graphics technology at this free one hour event hosted 
> by HP,
> AMD, and NVIDIA.  To register visit http://www.hp.com/go/dualwebinar
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

I just updated to 0.83 and I am now having a problem with Ipython.  
Running the following code as a script produces the error message 
below.  I am running Python 2.3.5 on Windows XP with Ipython 0.6.15.  I 
get the same message regardless of whether or not I set ion().

How do I fix this?

Thanks,

Ryan

import pylab, scipy
x=scipy.arange(0,1,0.1)
y=scipy.sin(2*scipy.pi*x)

#pylab.ion()
pylab.figure(1)
pylab.plot(x,y)


In [13]: run pylab_test.py
---------------------------------------------------------------------------
exceptions.AttributeError                            Traceback (most 
recent call
 last)

E:\GT\Research\Samii\modeling\TwoD\TMM_2D_scipy\<console>

C:\Python23\Lib\site-packages\IPython\iplib.py in ipmagic(arg_s)
    140     else:
    141         magic_args = __IPYTHON__.var_expand(magic_args)
--> 142         return fn(magic_args)
    143
    144 def ipalias(arg_s):

C:\Python23\Lib\site-packages\IPython\Shell.py in magic_run(self, 
parameter_s)
    474
    475     def magic_run(self,parameter_s=''):
--> 476         Magic.magic_run(self,parameter_s,runner=self.mplot_exec)
    477
    478     # Fix the docstring so users see the original as well

C:\Python23\Lib\site-packages\IPython\Magic.py in magic_run(self, 
parameter_s, r
unner)
   1381                     self.shell.user_ns.update(prog_ns)
   1382         finally:
-> 1383             sys.argv = save_argv
   1384         return stats
   1385

C:\Python23\Lib\site-packages\IPython\Shell.py in mplot_exec(self, 
fname, *where
, **kw)
    465         self.matplotlib.interactive(isInteractive)
    466         # make rendering call now, if the user tried to do it
--> 467         if self.pylab.draw_if_interactive.called:
    468             self.pylab.draw()
    469             self.pylab.draw_if_interactive.called = False

AttributeError: 'function' object has no attribute 'called'

On Sat, 09 Jul 2005, John Hunter apparently wrote: 
> It's pretty trivial to iterate over your list and call axvspan 
> repeatedly.

Absolutely.
I saw this purely as a nice user convenience.
I was not even thinking about the performance
aspect, which you mention.

> Now if you have a long list of min/max values, you'll get 
> into performance issues since axvspan creates a new 
> rectangle for each min/max pair.  To handle this case, we 
> would need to use a PolygonCollection (axvspans?)  I would 
> suggest [ (xmin1, xmax2), (xmin1, xmin2), ...] as a more 
> natural data structure for the argument.

Yes, I considered that because of its naturalness
but went for conciseness.  (I also had in the back
of my mind that you might one day accept datetime.date
compatible tuples as arguments, and typing tuples of tuples
seemed error prone.)  Either is great.

> Is this a common need? 

Pretty common in macroeconomics.
E.g., highlight the recession periods for some time series.

However, given what you have said, I should add that 
I cannot think of an example with a *long* list of values.

Cheers,
Alan

>>>>> "Gary" == Gary Ruben <gr...@bi...> writes:

    Gary> I'm still getting a traceback with mpl0.83 when trying to
    Gary> run tex_demo.py under Windows (both Win98 and Win2k).  Has
    Gary> anyone got this going under Windows?  thanks, Gary R.

    Gary> This is e-TeX, Version 3.141592-2.2 (MiKTeX 2.4) entering
    Gary> extended mode ! Undefined control sequence.  <*> 'C:\cygwin
    Gary> \home\gary\.matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8...

I don't have a tex distro on win32 and have no immediate plans to
install one, so you may need to hunt this one down yourself.  It looks
like there may be an errant newline after c:\cygwin, though this could
be an artifact of your post.  

I suggest opening up site-packages/matplotlib/texmanager.py and adding
print statements to figure out what is going on with the various dirs,
eg, printing the value of texcache and the various files and commands
that the code tries to create and run.  In particular, in make_dvi,
print out

tex, fname and command after the call to

 command = self.get_tex_command(tex, fname)

print 'COMMAND', command
print 'TEX', tex
print 'FNAME', fname

paste these commands into an editor and try and call them with 

            stdin, stdout, stderr = os.popen3(command)
            verbose.report(''.join(stdout.readlines()), 'debug-annoying')
            err = ''.join(stderr.readlines())
            if err: verbose.report(err, 'helpful')

just as texmanager does, and try and sort out what the cause of the
error is.  Let me know if you learn anything -- good luck!

Thanks!
JDH

>>>>> "Alan" == Alan G Isaac <ai...@am...> writes:

    Alan> axvspan is useful with plot_date.  Two thoughts addressing
    Alan> only convenience not functionality.

    Alan> 1. Might it make sense for the first argument to be a list?
    Alan> This would be interpreted as [xmin1,xmax1,xmin2,xmax2,...]
    Alan> allowing multiple shadings in one go.  If breaking the
    Alan> interface is too costly, perhaps allowing matched lists for
    Alan> the xmin and xmax arguments would be an alternative.

I wouldn't want to break the existing interface.  Is it really that
It's pretty trivial to iterate over your list and call axvspan
repeatedly.  Now if you have a long list of min/max values, you'll get
into performance issues since axvspan creates a new rectangle for each
min/max pair.  To handle this case, we would need to use a
PolygonCollection (axvspans?)  I would suggest [ (xmin1, xmax2),
(xmin1, xmin2), ...] as a more natural data structure for the
argument.  Is this a common need?

    Alan> 2. If I wish to shade date ranges, am I right that I now
    Alan> should produce date objects and then use date2num to get
    Alan> xmin and xmax?  Would it be useful for axvspan to directly
    Alan> accept the tuples that would be fed to date (or datetime)
    Alan> for xmin and xmax?

Well plotdate takes datenums (as you say, dates converted with
date2num).  I think it would add, not reduce, confusion if axvspan did
anything different in the case.  To make your code read better, just
add a little helper function converting whatever form of date
representation you use to a datetime and then call it

  axvspan( todatenum(xmin), todatenum(xmax) )

JDH

JDH

axvspan is useful with plot_date.

Two thoughts addressing only convenience not functionality.

1. Might it make sense for the first argument to be a list?  
   This would be interpreted as 
   [xmin1,xmax1,xmin2,xmax2,...]
   allowing multiple shadings in one go.  If breaking the
   interface is too costly, perhaps allowing matched lists
   for the xmin and xmax arguments would be an alternative.

2. If I wish to shade date ranges, am I right that I now 
   should produce date objects and then use date2num to get 
   xmin and xmax?  Would it be useful for axvspan to 
   directly accept the tuples that would be fed to date (or 
   datetime) for xmin and xmax?

Cheers,
Alan Isaac

I'm still getting a traceback with mpl0.83 when trying to run 
tex_demo.py under Windows (both Win98 and Win2k).
Has anyone got this going under Windows?
thanks,
Gary R.

Here's the dump with debug-annoying set:

loaded rc file C:\PYTHON23\share\matplotlib\matplotlibrc
matplotlib version 0.83
verbose.level debug-annoying
interactive is False
platform is win32
loaded modules: ['__future__', 'copy_reg', 'sre_compile', 'distutils', 
'locale', '_sre', '__main__', 'site', '__builtin__', 'datetime', 
'matplotlib.tempfile', 'encodings', 'os.path', 'encodings.encodings', 
'sre_constants', 'distutils.string', 'dateutil', 'matplotlib.datetime', 
'strop', '_random', 'tempfile', 'errno', 'matplotlib.warnings', 
'encodings.codecs', 'matplotlib.sys', 're', 'ntpath', 'pytz.sys', 
'UserDict', 'distutils.sysconfig', 'encodings.exceptions', 'nt', 
'pytz.sets', 'math', 'stat', 'zipimport', 'string', 'warnings', 
'encodings.types', '_codecs', 'sets', 'distutils.os', 'matplotlib', 
'encodings.cp1252', 'sys', 'pytz.tzinfo', 'pytz', 'pytz.datetime', 
'matplotlib.__future__', 'codecs', 'distutils.re', 'matplotlib.pytz', 
'types', 'matplotlib.dateutil', '_locale', 'matplotlib.os', 'thread', 
'sre', 'bisect', 'matplotlib.distutils', 'signal', 'distutils.errors', 
'random', 'linecache', 'itertools', 'time', 'exceptions', 'sre_parse', 
'pytz.bisect', 'distutils.sys', 'os']
numerix Numeric 23.7
font search path ['C:\\PYTHON23\\share\\matplotlib']
trying fontname C:\PYTHON23\share\matplotlib\cmex10.ttf
trying fontname C:\PYTHON23\share\matplotlib\cmmi10.ttf
trying fontname C:\PYTHON23\share\matplotlib\cmr10.ttf
trying fontname C:\PYTHON23\share\matplotlib\VeraMono.ttf
trying fontname C:\PYTHON23\share\matplotlib\cmsy10.ttf
trying fontname C:\PYTHON23\share\matplotlib\VeraMoBI.ttf
trying fontname C:\PYTHON23\share\matplotlib\cmtt10.ttf
trying fontname C:\PYTHON23\share\matplotlib\Vera.ttf
$HOME=C:\cygwin\home\gary
CONFIGDIR=C:\cygwin\home\gary\.matplotlib
loaded ttfcache file C:\cygwin\home\gary\.matplotlib\ttffont.cache
matplotlib data path C:\PYTHON23\share\matplotlib
backend TkAgg version 8.4
FigureCanvasAgg.draw
RendererAgg.__init__
This is e-TeX, Version 3.141592-2.2 (MiKTeX 2.4)
entering extended mode
! Undefined control sequence.
<*> 'C:\cygwin
 
\home\gary\.matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8...

! Undefined control sequence.
<*> 'C:\cygwin\home
 
\gary\.matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8...

! Undefined control sequence.
<*> 'C:\cygwin\home\gary
 
\.matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8...

! I can't find file `'C:.tex'.
<to be read again>
                    \global
<*> 'C:\cygwin\home\gary\.
 
matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8...
Please type another input file name
! Emergency stop.
<to be read again>
                    \global
<*> 'C:\cygwin\home\gary\.
 
matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8...

No pages of output.
Transcript written on texput.log.

This is dvipng 1.1 Copyright 2002-2004 Jan-Åke Larsson

C:\cygwin\home\gary\.matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8224.dvi: 
No such file or directory
C:\MIKTEX\MAIN\MIKTEX\BIN\DVIPNG.EXE warning: Unimplemented color 
specification ''rgb'


Exception in Tkinter callback
Traceback (most recent call last):
   File "C:\PYTHON23\lib\lib-tk\Tkinter.py", line 1345, in __call__
     return self.func(*args)
   File 
"C:\PYTHON23\Lib\site-packages\matplotlib\backends\backend_tkagg.py", 
line 148, in resize
     self.show()
   File 
"C:\PYTHON23\Lib\site-packages\matplotlib\backends\backend_tkagg.py", 
line 151, in draw
     FigureCanvasAgg.draw(self)
   File 
"C:\PYTHON23\Lib\site-packages\matplotlib\backends\backend_agg.py", line 
383, in draw
     self.figure.draw(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\figure.py", line 511, 
in draw
     for a in self.axes: a.draw(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\axes.py", line 1386, 
in draw
     self.xaxis.draw(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\axis.py", line 549, in 
draw
     tick.draw(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\axis.py", line 148, in 
draw
     if self.label1On: self.label1.draw(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\text.py", line 849, in 
draw
     self._mytext.draw(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\text.py", line 336, in 
draw
     bbox, info = self._get_layout(renderer)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\text.py", line 181, in 
_get_layout
     w,h = renderer.get_text_width_height(
   File 
"C:\PYTHON23\Lib\site-packages\matplotlib\backends\backend_agg.py", line 
243, in get_text_width_height
     Z = self.texmanager.get_rgba(s, size, dpi, rgb)
   File "C:\PYTHON23\Lib\site-packages\matplotlib\texmanager.py", line 
296, in get_rgba
     X = readpng(pngfile)
RuntimeError: _image_module::readpng could not open PNG file 
C:\cygwin\home\gary\.matplotlib\tex.cache\30565a8911a6bb487e3745c0ea3c8224_96.png 
for reading

John Hunter wrote:
> Normally, this would have been a bugfix release, but I reorganized the
> matplotlib configuration files so thought it best to tick the version
> number.  All of the configuration files and dirs (matplotlibrc,
> tex.cache, ttffont.cache ) now reside in $HOME/.matplotlib (on windows
> C:\Documents and Settings\youracct\.matplotlib).  Please rename your
> .matplotlibrc file to matplotlibrc and put it there.
> 
> Other changes are 
> 
> 
> 2005-07-07 Added Eric's MA set_xdata Line2D fix - JDH
> 
> 2005-07-06 Made HOME/.matplotlib the new config dir where the
>            matplotlibrc file, the ttf.cache, and the tex.cache live.
>            The new default filenames in .matplotlib have no leading
>            dot and are not hidden.  Eg, the new names are matplotlibrc
>            tex.cache ttffont.cache.  This is how ipython does it so it
>            must be right.  If old files are found, a warning is issued
>            and they are moved to the new location.  Also fixed
>            texmanager to put all files, including temp files in
>            ~/.matplotlib/tex.cache, which allows you to usetex in
>            non-writable dirs.
> 
> 
> 2005-07-05 Fixed bug #1231611 in subplots adjust layout.  The problem
>            was that the text cacheing mechanism was not using the
>            transformation affine in the key. - JDH
> 
> 2005-07-05 Fixed default backend import problem when using API (SF bug
>            # 1209354 -  see API_CHANGES for more info - JDH
> 
> 2005-07-04 backend_gtk.py: require PyGTK version 2.0.0 or higher - SC
> 
> 2005-06-30 setupext.py: added numarray_inc_dirs for building against
>            numarray when not installed in standard location - ADS
> 
> 
> 2005-06-27 backend_svg.py: write figure width, height as int, not float.
>            Update to fix some of the pychecker warnings - SC
>   
> 2005-06-23 Updated examples/agg_test.py to demonstrate curved paths
>            and fills - JDH
> 
> 2005-06-21 Moved some texmanager and backend_agg tex caching to class
>            level rather than instance level - JDH
> 
> 2005-06-20 setupext.py: fix problem where _nc_backend_gdk is installed to the
>            wrong directory - SC
> 
> 2005-06-19 Added 10.4 support for CocoaAgg. - CM
> 
> 2005-06-18 Move Figure.get_width_height() to FigureCanvasBase and return
>            int instead of float. - SC
> 
> 2005-06-18 Applied Ted Drain's QtAgg patch: 1) Changed the toolbar to
>            be a horizontal bar of push buttons instead of a QToolbar
>            and updated the layout algorithms in the main window
>            accordingly.  This eliminates the ability to drag and drop
>            the toolbar and detach it from the window.  2) Updated the
>            resize algorithm in the main window to show the correct
>            size for the plot widget as requested.  This works almost
>            correctly right now.  It looks to me like the final size of
>            the widget is off by the border of the main window but I
>            haven't figured out a way to get that information yet.  We
>            could just add a small margin to the new size but that
>            seems a little hacky.  3) Changed the x/y location label to
>            be in the toolbar like the Tk backend instead of as a
>            status line at the bottom of the widget.  4) Changed the
>            toolbar pixmaps to use the ppm files instead of the png
>            files.  I noticed that the Tk backend buttons looked much
>            nicer and it uses the ppm files so I switched them.
> 
> 
> 2005-06-17 Modified the gtk backend to not queue mouse motion events.
>            This allows for live updates when dragging a slider. - CM
> 
> 2005-06-17 Added starter CocoaAgg backend.  Only works on OS 10.3 for
>            now and requires PyObjC.  (10.4 is high priority) - CM
> 
> 2005-06-17 Upgraded pyparsing and applied Paul McGuire's suggestions
>            for speeding things up.  This more than doubles the speed
>            of mathtext in my simple tests. JDH
> 
> 2005-06-16 Applied David Cooke's subplot make_key patch
> 
> 
> Downloads at http://matplotlib.sf.net
> 
> Enjoy!
> JDH
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by the 'Do More With Dual!' webinar happening
> July 14 at 8am PDT/11am EDT. We invite you to explore the latest in dual
> core and dual graphics technology at this free one hour event hosted by HP,
> AMD, and NVIDIA.  To register visit http://www.hp.com/go/dualwebinar
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>