matplotlib-users Mailing List for matplotlib

Sorry, Jouni: I am not familiar with CVS syntax. Is there someway you can =
email me a complete backend_pdf.py to try?=0A=0ARegards,=0A=0A> -----Origin=
al Message-----=0A> From: mat...@li... =
=0A> [mailto:mat...@li...] On =0A> Behalf=
 Of Jouni K. Sepp=E4nen=0A> Sent: Monday, March 12, 2007 11:20 PM=0A> To: m=
atp...@li...=0A> Subject: Re: [Matplotlib-users] P=
DF backend problem=0A> =0A> =0A> I fixed another filehandle leak in the pdf=
 backend, so here's =0A> a more complete patch. There are also several case=
s of =0A> file(...) being passed to pickle.dump or pickle.load in =0A> font=
_manager.py. I was going to take care of these by writing =0A> some utility=
 functions, but I started wondering why the =0A> import of cPickle or pickl=
e is done only within methods of =0A> FontManager and not at the top level.=
 Are there some =0A> platforms where neither is available, or what is the r=
ationale?=0A> =0A> Index: backend_pdf.py =0A> =3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=0A> --- backend_pdf.py (revision 3044)=0A> ++=
+ backend_pdf.py (revision 3046)=0A> @@ -457,7 +457,9 @@=0A> =
self.writeObject(self.fontObject, fonts)=0A> =0A> def _write_afm_=
font(self, filename):=0A> - font =3D AFM(file(filename))=0A> + =
 fh =3D file(filename)=0A> + font =3D AFM(fh)=0A> + fh.close=
()=0A> fontname =3D font.get_fontname()=0A> fontdict =3D =
{ 'Type': Name('Font'),=0A> 'Subtype': Name('Type1'),=
=0A> @@ -1081,7 +1083,9 @@=0A> font =3D self.afm_font_cache.get(ke=
y)=0A> if font is None:=0A> filename =3D fontManager.=
findfont(prop, fontext=3D'afm')=0A> - font =3D AFM(file(filename=
))=0A> + fh =3D file(filename)=0A> + font =3D AFM(fh)=
=0A> + fh.close()=0A> self.afm_font_cache[key] =3D =
font=0A> return font=0A> =0A> -- =0A> Jouni K. Sepp=E4nen=0A> http=
://www.iki.fi/jks=0A> =0A> =0A> -------------------------------------------=
-------------------=0A> -----------=0A> Take Surveys. Earn Cash. Influence =
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oin.php&p=3Dsourceforge=0A&CID=3DDEVDEV=0A_________________________________=
______________=0AMatplotlib-users mailing list Mat...@li...urc=
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=0A=0A =0A--=0AJohn Henry=0A=0A

Hi There
I am new to Matplotlib. Indeed I am new to programming. I am learning 
Python and PyGtk.
I rebuild and resell instruments used in laboratories. There is a dire 
need for affordable software. Researchers have to waste a lot of money 
on hyped up closed source software. I would like to write an open source 
application in the hopes that others will contribute.
Could someone recommend an instrumentation oriented application that 
uses Matplotlib. The examples on the website are great but it would be 
nice to see how it integrates into an entire application.
Thanks in advance-Patrick

CS wrote:
> Hello - I've been searching around for a good plotting package for
> python; matplotlib seems great - the problem is, I can't get anything
> to show().
>
> I'm on os x 10.4.8, python 2.4.
> I've installed (and uninstalled and installed) matplotlib via darwin ports:
>
> novelbox:~/dev/py/work knot$ sudo port installed | grep matplot
> py-matplotlib @0.87.6_0 (active)
>
> I can execute this from the interactive python prompt:
>
> Python 2.4.3 (#1, Mar 30 2006, 11:02:16)
> [GCC 4.0.1 (Apple Computer, Inc. build 5250)] on darwin
> 
>>>> from pylab import *
>>>> plot([1,2,3])
>>>> 
> [<matplotlib.lines.Line2D instance at 0x2bdf800>]
> 
>>>> show()
>>>> 
>
> but I don't get any output window...
> Same for executing this snippet from the shell:
>
> novelbox:~/dev/py/work knot$ cat matplot.py
>
> from pylab import *
> plot([1,2,3])
> show()
> raw_input()
>
>
> novelbox:~/dev/py/work knot$ python matplot.py --verbose-helpful
>
> matplotlib data path /opt/local/lib/python2.4/site-packages/matplotlib/mpl-data
> $HOME=/Users/knot
> CONFIGDIR=/Users/knot/.matplotlib
> loaded rc file /opt/local/lib/python2.4/site-packages/matplotlib/mpl-data/matplotlibrc
> matplotlib version 0.87.6
> verbose.level helpful
> interactive is False
> platform is darwin
> numerix numarray 1.5.1
> font search path ['/opt/local/lib/python2.4/site-packages/matplotlib/mpl-data']
> loaded ttfcache file /Users/knot/.matplotlib/ttffont.cache
> backend Agg version v2.2
>
>
>
> I found nothing in the FAQ or mailing list archive similar to this problem.
> I must be doing something dumb, but without an error I'm a bit perplexed.
>
> Can anyone please point me in a direction that might help me solve this?
>
> TIA
> 
You're using the Agg backend, which has no GUI. It can only produce image (i.e. png) files, which you can save to disk with the savefig command and then display with an external viewer.
Try a GUI backend such as TkAgg if you want the show command to open a window. See http://matplotlib.sourceforge.net/backends.html for information on how to change your default backend.
-Jeff
-- 
Jeffrey S. Whitaker Phone : (303)497-6313
Meteorologist FAX : (303)497-6449
NOAA/OAR/PSD R/PSD1 Email : Jef...@no...
325 Broadway Office : Skaggs Research Cntr 1D-124
Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg

Hello - I've been searching around for a good plotting package for
python; matplotlib seems great - the problem is, I can't get anything
to show().
I'm on os x 10.4.8, python 2.4.
I've installed (and uninstalled and installed) matplotlib via darwin ports:
novelbox:~/dev/py/work knot$ sudo port installed | grep matplot
 py-matplotlib @0.87.6_0 (active)
I can execute this from the interactive python prompt:
Python 2.4.3 (#1, Mar 30 2006, 11:02:16)
[GCC 4.0.1 (Apple Computer, Inc. build 5250)] on darwin
>>> from pylab import *
>>> plot([1,2,3])
[<matplotlib.lines.Line2D instance at 0x2bdf800>]
>>> show()
but I don't get any output window...
Same for executing this snippet from the shell:
novelbox:~/dev/py/work knot$ cat matplot.py
from pylab import *
plot([1,2,3])
show()
raw_input()
novelbox:~/dev/py/work knot$ python matplot.py --verbose-helpful
matplotlib data path /opt/local/lib/python2.4/site-packages/matplotlib/mpl-data
$HOME=/Users/knot
CONFIGDIR=/Users/knot/.matplotlib
loaded rc file /opt/local/lib/python2.4/site-packages/matplotlib/mpl-data/matplotlibrc
matplotlib version 0.87.6
verbose.level helpful
interactive is False
platform is darwin
numerix numarray 1.5.1
font search path ['/opt/local/lib/python2.4/site-packages/matplotlib/mpl-data']
loaded ttfcache file /Users/knot/.matplotlib/ttffont.cache
backend Agg version v2.2
I found nothing in the FAQ or mailing list archive similar to this problem.
I must be doing something dumb, but without an error I'm a bit perplexed.
Can anyone please point me in a direction that might help me solve this?
TIA

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This doesn't seem to be having the desired effect. I can set the 
frame's edgecolor
to whatever I want, and it is displayed correctly, but there is still 
a black line surrounding
it? Is there another property I need to set somewhere to completely 
change the border
color?
 ax=gca()
 frame = ax.get_frame()
 setp(frame, 'linewidth', 1)
 setp(frame, 'edgecolor', 'blue')
Best regards,
Peter Buschman

David Fokkema <dfo...@il...> writes:
> basically a horizontal cumulative histogram, apart from the fact that
> the plot should be rotated 90 degrees counter-clockwise.
Does hist(..., orientation='horizontal') look right?
-- 
Jouni K. Seppänen
http://www.iki.fi/jks

Hi list,
I started to use ipython with matplotlib and I'm starting to become a
fan. However, I encountered a problem which is nagging me big time.
http://procyon.homeunix.net/~dfokkema/plot-matplotlib-070313.png
This is a plot of a 2d histogram of events where peak heights and time
differences are histogrammed. Below that one I made a 1D histogram of
only time differences, which is basically a vertical cumulative
histogram. On the top right, I did the same for the peak heights, which
is basically a horizontal cumulative histogram, apart from the fact that
the plot should be rotated 90 degrees counter-clockwise.
I looked through the matplotlib.transforms and in the Cookbook/wiki, but
couldn't work it out. Is it possible to use some kind of transform to
rotate my plot?
Thanks!
David

On 13/03/07, Antonino Ingargiola <tri...@gm...> wrote:
> On 3/13/07, John Travers <jt...@gm...> wrote:
> > On 13/03/07, Antonino Ingargiola <tri...@gm...> wrote:
> > > 1. This method works ok as far as I choose a unicode font with the
> > > greek letters, for example:
> > >
> > > rcParams['font.serif'] = 'DejaVu Serif'
> > >
> > > However with unicode strings I'm not able to do exponent and deponent
> > > text (i.e cm^-1)
> >
> > You should be able to do super/subscripts in unicode. For example a
> > superscript '-' is unicode 207B. If you haven't already found it you
> > should check out:
> > http://unicode.org/charts/symbols.html
> > for more codes. However, the font you choose must support the unicode
> > (most only support a certain subset).
>
> Many thanks. Now I can do superscript and subscript (using GuCharMap I
> can search in symbol description so it's easy to find them).
>
> However the only font I know that has the superscript with the minus
> sign is "DejaVu Sans". Anyone know a serif font (or also another sans
> font) with all those symbols?
DejaVu Serif appears to, and both FreeSans and FreeSerif from freefont
project do.
John

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On 13/03/07, Antonino Ingargiola <tri...@gm...> wrote:
> 1. This method works ok as far as I choose a unicode font with the
> greek letters, for example:
>
> rcParams['font.serif'] = 'DejaVu Serif'
>
> However with unicode strings I'm not able to do exponent and deponent
> text (i.e cm^-1)
You should be able to do super/subscripts in unicode. For example a
superscript '-' is unicode 207B. If you haven't already found it you
should check out:
http://unicode.org/charts/symbols.html
for more codes. However, the font you choose must support the unicode
(most only support a certain subset).
Regards,
John

Hello,
I'm trying to display some unicode text in matplotlib graphs embedded in
a Qt application. The text contains characters belonging to Turkish and
Korean idioms.
I've started modifying the simple demo examples/unicode_demo.py, I ran
it and I got a nice test.svg file with the correct glyphs. So far
everything was good.
Then I moved to examples/embedding_in_qt.py, and placed there the very
same unicode strings I used in the previous example: in the running
application, Turkish glyphs are displayed correctly, Korean ones are
represented by "squares" instead.
(I'm attaching the modified sources if somebody wants to do some quick
tests)
It seems that the unicode handling code is different between SVG and Qt
backends. If so, am I missing something in the Qt code to get all the
correct glyphs?
This is with matplotlib 0.86.2, pyqt 3.16.
Thanks in advance!
-- 
Lorenzo Mancini

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I fixed another filehandle leak in the pdf backend, so here's a more
complete patch. There are also several cases of file(...) being passed
to pickle.dump or pickle.load in font_manager.py. I was going to take
care of these by writing some utility functions, but I started
wondering why the import of cPickle or pickle is done only within
methods of FontManager and not at the top level. Are there some
platforms where neither is available, or what is the rationale?
Index: backend_pdf.py
===================================================================
--- backend_pdf.py (revision 3044)
+++ backend_pdf.py (revision 3046)
@@ -457,7 +457,9 @@
 self.writeObject(self.fontObject, fonts)
 
 def _write_afm_font(self, filename):
- font = AFM(file(filename))
+ fh = file(filename)
+ font = AFM(fh)
+ fh.close()
 fontname = font.get_fontname()
 fontdict = { 'Type': Name('Font'),
 'Subtype': Name('Type1'),
@@ -1081,7 +1083,9 @@
 font = self.afm_font_cache.get(key)
 if font is None:
 filename = fontManager.findfont(prop, fontext='afm')
- font = AFM(file(filename))
+ fh = file(filename)
+ font = AFM(fh)
+ fh.close()
 self.afm_font_cache[key] = font
 return font
-- 
Jouni K. Seppänen
http://www.iki.fi/jks

kc1...@ya... writes:
> Now, I am running into another problem. Everything works fine up to
> 8 page plots. Starting with the 9th page, MPL chokes at line 1084 in
> backend_pdf.py and couldn't find the cooresponding ttf file
> (VeraSe.ttf) but it had no problem reading that file for the first 8
> plots.
Does the following change help with this? (If you are following svn,
just run "svn update"; otherwise, the easiest way is to replace line
1084 by the three lines prefixed with + below.)
Index: backend_pdf.py
===================================================================
--- backend_pdf.py (revision 3044)
+++ backend_pdf.py (revision 3045)
@@ -1081,7 +1081,9 @@
 font = self.afm_font_cache.get(key)
 if font is None:
 filename = fontManager.findfont(prop, fontext='afm')
- font = AFM(file(filename))
+ fh = file(filename)
+ font = AFM(fh)
+ fh.close()
 self.afm_font_cache[key] = font
 return font
-- 
Jouni K. Seppänen
http://www.iki.fi/jks

Hi list,=0A=0AFirst of all, thanks to Bill Dandreta and Jouni Seppanen for =
helping with my combining single page pdf into multipage pdf question. I t=
ried both method and went with pdftex because it's very simple (and fits my=
 need).=0A=0ANow, I am running into another problem. Everything works fin=
e up to 8 page plots. Starting with the 9th page, MPL chokes at line 1084=
 in backend_pdf.py and couldn't find the cooresponding ttf file (VeraSe.ttf=
) but it had no problem reading that file for the first 8 plots.=0A=0A???=
=0A=0ARegards,=0A =0A--=0AJohn Henry=0A=0A