matplotlib-users Mailing List for matplotlib

Hi Giovanni,
Radar plots haven't been added to the core functionality of 
matplotlib, but there's an example of a custom radar chart class on 
the mpl website:
http://matplotlib.sourceforge.net/examples/api/radar_chart.html
Best,
-Tony
On Oct 17, 2009, at 9:33 AM, Giovanni Bacci wrote:
>
> Hi all. I'd like to know if it's possible to obtain a radar plot like
> this: http://code.google.com/intl/en/apis/chart/types.html#radar (the
> filled one, with cht=rs) with matplotlib. I'm using matplotlib version
> 0.98.5
>
> Thanks,
> Giovanni
>
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I don't think maxdict is the problem though it may be changing how the 
problem manifests itself. What is happening is that when maxdict is 
used, those C++ extension objects are deleted after the first 50 math 
expressions. When using a dict, they aren't deleted until closing the 
application, so it just delays the problem.
All that said, I'm not sure as to the real cause of the error.
I was able to reproduce it on Windows XP with:
 mpl 0.98.5, wx 2.8.10.6, python 2.5.4
however, the following seems to work:
 mpl 0.98.5, wx 2.8.10.6, python 2.6.3
Are you able to update to Python 2.6? That might be one solution to the 
problem.
I have to say I'm completely stumped as to the root cause of this one.
Mike
On 10/17/2009 08:44 AM, Cédrick FAURY wrote:
> Hello,
>
> I restate the problem :
>
> With the attached script "test_mathtext_wx.py" :
> 50 functions (line 31) : the 50 bitmaps are generated correctly, by 
> when I close the application an error appears in the console :
>
> Assertion failed: ob_refcnt == 0, file CXX\cxx_extensions.cxx, line 1128
> This application has requested the Runtime to terminate it in an 
> unusual way.
> Please contact the application's support team for more information.
>
> 250 functions : the window never appears and the crash occurs (same 
> message)
>
>
> However, if in mathtext.py (mpl 0.98.5 win32 py2.5) line 2765 in 
> MathTextParser, I put "self._cache = dict()" instead of "self._cache 
> = maxdict(50)", the behavior of "test_mathtext_wx.py" is significantly 
> different.
> 50 functions : error on console after closing the application (no 
> difference here)
> 250 functions : NO CRASH (but error after closing the application)
>
> And now, my questions :
> Is this proof that "maxdict" is the cause of the problem ?
> Is there a known way to avoid the problem?
> Can someone tell me more about maxdict ?
>
> Hoping to have been quite clear,
> Cédrick
>
>
>

Hi,
Is there a way to have errorbars in a bar plot going in just one
direction? E. g. like that
 -
 |
+-----+
| |
instead of
 -
 |
+-----+
| | |
 -
?
TIA
Christian

Thanks Darren,
Then, I guess, the easiest solution is to either use to set all tick
labels manually or to just use serif fonts ;-).
Christian
On Fri, 2009年10月16日 at 09:57 -0400, Darren Dale wrote:
> On Thu, Oct 15, 2009 at 10:38 AM, Christian Meesters
> <mee...@im...> wrote:
> > Hi,
> >
> > I'd like to have all sub-fonts (labels, tick labels, text) sans-serif
> > for a series of plots per default. However the appropriate settings
> > in .matplotlibrc apparently don't work and this also does not work:
> >
> > import matplotlib as mpl
> > mpl.rcParams['text.usetex'] = True
> > mpl.rcParams['font.family'] = 'sans-serif'
> > mpl.rcParams['font.sans-serif'] = 'Bitstream Vera Sans'
> 
> usetex uses latex's math mode for rendering ticklabels, and mathmode
> is rendered in serif. We tried supporting sans-serif once, and it
> turned out to be too complicated to cover all the corner cases. I
> think there may be a latex package that can be loaded for sans-serif
> math mode, but I don't remember what it is called. You could add that
> package invocation to your text.latex.preamble, but please note that
> text.latex.preamble is not officially supported (because it is so
> flexible, we don't want to troubleshoot latex issues on this list.)
> 
> Darren

it would be nice to be able to plot histograms with bins labeled directly in
percents, but it isn't supported by hist(). Workaround is to change either
your data or your axis.
http://sourceforge.net/tracker/?func=detail&aid=2775888&group_id=80706&atid=560723
Tracker: Feature Requests
5 hist plot in percent - ID: 2775888
Last Update: Tracker Item Submitted ( nobody )
Details:
except for normed=1 there is no way to control the y output of hist.
being able to specify an output in percent would be useful.
hist(x, percent=1)
plots y/n*100 histograms
Submitted:
Nobody/Anonymous ( nobody ) - 2009年04月20日 08:48
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