Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
> From: Christopher Barrington-Leigh > [mailto:cpblpublic+nab...@gmail.com] > Sent: Sunday, September 27, 2009 21:58 > > Hello. My problem is as follows: > (ipython --pylab) > > from pylab import * > pp=plot([0,0],[1,1]) > text(xlim()[0],1,'Need padding ',horizontalalignment='left') > text(xlim()[1],1,'Need padding ',horizontalalignment='right') > > > The second case does not do what I want, which is to pad the > text on the right. Text strings are stripped on the right, > but no on the left. How can I elegantly create a character of space? Sorry to be chiming in somewhat late in the discussion, but below is a method for padding that uses transforms instead of characters. It's based on a bit of code in the cla() method of the Axes class. The helper functions facilitate padding relative to data or axes coordinates, and the padding is expressed in physical length units. (I picked inches just because the figure dimensions are managed in inches.) import matplotlib.pyplot as plt import matplotlib.transforms as transforms def padded_data_transform(axes, xPadInches, yPadInches): return axes.transData + transforms.ScaledTranslation(xPadInches, yPadInches, axes.figure.dpi_scale_trans) def padded_axes_transform(axes, xPadInches, yPadInches): return axes.transAxes + transforms.ScaledTranslation(xPadInches, yPadInches, axes.figure.dpi_scale_trans) plt.plot([0], [1], '+') ax = plt.gca() plt.text(0, 1, '12 pt right of (0, 1)', horizontalalignment='left', verticalalignment='center', transform=padded_data_transform(ax, 12 / 72.0, 0)) plt.text(0, 1, '12 pt left of (0, 1)', horizontalalignment='right', verticalalignment='center', transform=padded_data_transform(ax, -12 / 72.0, 0)) plt.text(0, 0, '0.5 in right of lower left', horizontalalignment='left', verticalalignment='bottom', transform=padded_axes_transform(ax, 0.5, 0)) plt.text(1, 1, '0.5 in left of upper right', horizontalalignment='right', verticalalignment='top', transform=padded_axes_transform(ax, -0.5, 0)) -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Christopher Barrington-Leigh wrote: >> This does not. First of all, "~" and "\mbox" are not supported if >> usetex=False and I guess never will be. On the other hand, >> as far as I can see, the whitespace stripping is not done in mpl >> side. And I have a feeling that it may be the freetype library. mpl >> uses FT_Glyph_Get_CBox to calculate the extents of the text and I >> think this seems to fail when there is a trailing spaces. This is >> beyond me I hope other developers have better idea. >> >> >> > > Thanks, I too hope some other developers chime in! > > The calculation of the text bounding box was only taking into account the outlines of the text -- and spaces don't have any outlines. I have updated this to also take into account the x-advance of each character, so it now works as expected. As this has the potential to break things, I did this on the trunk, not the maintenance branch, so it will make it into the next major release, not the next bugfix release. The patch can be found here, if you wish to apply it locally: http://matplotlib.svn.sourceforge.net/viewvc/matplotlib/trunk/matplotlib/src/ft2font.cpp?r1=7635&r2=7838 Cheers, Mike -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
On Wed, Sep 30, 2009 at 4:38 PM, Christopher Barrington-Leigh
wrote:
>
>
> Jae-Joon Lee wrote:
>>
>> This works if you use recent version of matplotlib with preview mode
>> on. Without the preview mode (or other similar ways to report the
>> dimension of the text from TeX side), I don't think this can be done.
>>
>>
>
> Ok, thanks. I hope I am understanding. Would you be able to point me to a
> link to info on what you mean by "preview mode"?
> By recent version you mean something in the svn, I guess?
>
>
0.99.0 and later should work.
text.usetex : True
text.latex.preview : True
Include these in your rc file. While the preview.sty is installed in
most tex distribution, you may need to install it if not.
>
>
>> This does not. First of all, "~" and "\mbox" are not supported if
>> usetex=False and I guess never will be. On the other hand,
>> as far as I can see, the whitespace stripping is not done in mpl
>> side. And I have a feeling that it may be the freetype library. mpl
>> uses FT_Glyph_Get_CBox to calculate the extents of the text and I
>> think this seems to fail when there is a trailing spaces. This is
>> beyond me I hope other developers have better idea.
>>
>>
>
> Thanks, I too hope some other developers chime in!
>
>
>
>> So, Christopher,
>> I guess your best chance is to upgrade and use preview mode, or use
>> annotate function.
>>
>
> I am not clear how annotate helps. If I am willing to specify x,y locations,
> I can do that with text() as well, no?. It's still a matter of calculating
> how big a piece of whitespace should end up, roughly.
annotate let you specify offset from (x, y).
annotate("test", (1., 0.5), (-20, 0), xycoords='data',
textcoords='offset points', ha="right")
Check the documentation.
Regards,
-JJ
>
> Thanks, JJ!
>
>
> --
> View this message in context:
> http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25688584.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
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Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Jae-Joon Lee wrote: > > This works if you use recent version of matplotlib with preview mode > on. Without the preview mode (or other similar ways to report the > dimension of the text from TeX side), I don't think this can be done. > > Ok, thanks. I hope I am understanding. Would you be able to point me to a link to info on what you mean by "preview mode"? By recent version you mean something in the svn, I guess? > This does not. First of all, "~" and "\mbox" are not supported if > usetex=False and I guess never will be. On the other hand, > as far as I can see, the whitespace stripping is not done in mpl > side. And I have a feeling that it may be the freetype library. mpl > uses FT_Glyph_Get_CBox to calculate the extents of the text and I > think this seems to fail when there is a trailing spaces. This is > beyond me I hope other developers have better idea. > > Thanks, I too hope some other developers chime in! > So, Christopher, > I guess your best chance is to upgrade and use preview mode, or use > annotate function. > I am not clear how annotate helps. If I am willing to specify x,y locations, I can do that with text() as well, no?. It's still a matter of calculating how big a piece of whitespace should end up, roughly. Thanks, JJ! -- View this message in context: http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25688584.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
On Tue, Sep 29, 2009 at 12:53 AM, Christopher Barrington-Leigh
wrote:
>
>
>
> Jae-Joon Lee wrote:
>>
>> Hmm, I'm afraid that this only works if you use preview mode. I
>> haven't tested, but I guess it will fail without it. Check if
>> rcParams["text.latex.preview"]==True.
>>
>
> Hm, I don't know about mpl's mathtext mode, but I'm actually always
> working in usetex mode. Unfortunately, even so,
> "text.latex.preview" does not exist in rcParams for me. However,... :
>
> I think the following behaviour is definitely
> buggy! Please try the following one at a time, in ion() mode (or just see
> sequence of png's produced). None of these succeeds in getting the desired
> alignment.
>
>
> from matplotlib import rc
>
> figure(1)
> clf()
> plot([0,0],[1,1])
>
> rc('text', usetex=True)
>
> text(xlim()[1],.96,r'$r^2$~~~\mbox{}',horizontalalignment='right')
> savefig('t10.png')
This works if you use recent version of matplotlib with preview mode
on. Without the preview mode (or other similar ways to report the
dimension of the text from TeX side), I don't think this can be done.
>
> rc('text', usetex=False)
> show()
> savefig('t20.png')
>
> text(xlim()[1],.97,r'$r^2$~~~\mbox{}',horizontalalignment='right')
> savefig('t30.png')
>
This does not. First of all, "~" and "\mbox" are not supported if
usetex=False and I guess never will be. On the other hand,
as far as I can see, the whitespace stripping is not done in mpl
side. And I have a feeling that it may be the freetype library. mpl
uses FT_Glyph_Get_CBox to calculate the extents of the text and I
think this seems to fail when there is a trailing spaces. This is
beyond me I hope other developers have better idea.
So, Christopher,
I guess your best chance is to upgrade and use preview mode, or use
annotate function.
Regards,
-JJ
> rc('text', usetex=True)
>
> show()
> savefig('t40.png')
>
> --
> View this message in context:
> http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25656912.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
> --
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> ahead of the curve. Join us from November 9-12, 2009. Register now!
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Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Jae-Joon Lee wrote:
>
> Hmm, I'm afraid that this only works if you use preview mode. I
> haven't tested, but I guess it will fail without it. Check if
> rcParams["text.latex.preview"]==True.
>
Hm, I don't know about mpl's mathtext mode, but I'm actually always
working in usetex mode. Unfortunately, even so,
"text.latex.preview" does not exist in rcParams for me. However,... :
I think the following behaviour is definitely
buggy! Please try the following one at a time, in ion() mode (or just see
sequence of png's produced). None of these succeeds in getting the desired
alignment.
from matplotlib import rc
figure(1)
clf()
plot([0,0],[1,1])
rc('text', usetex=True)
text(xlim()[1],.96,r'$r^2$~~~\mbox{}',horizontalalignment='right')
savefig('t10.png')
rc('text', usetex=False)
show()
savefig('t20.png')
text(xlim()[1],.97,r'$r^2$~~~\mbox{}',horizontalalignment='right')
savefig('t30.png')
rc('text', usetex=True)
show()
savefig('t40.png')
--
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http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25656912.html
Sent from the matplotlib - users mailing list archive at Nabble.com.
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Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Hmm, I'm afraid that this only works if you use preview mode. I
haven't tested, but I guess it will fail without it. Check if
rcParams["text.latex.preview"]==True.
-JJ
On Mon, Sep 28, 2009 at 6:26 PM, Jae-Joon Lee wrote:
> You need an empty mbox at the end of line (\mbox{}).
>
> text(xlim()[1],1.02,r'$r^2$~~~\mbox{}',horizontalalignment='right')
>
> If you did mean \; after ^, it requires {}.
>
> Again, these only works if you use real TeX for text rendering (ie
> usetex=True), not the mpl's mathtext mode.
>
> Regards,
>
> -JJ
>
>
> On Mon, Sep 28, 2009 at 5:48 PM, Christopher Barrington-Leigh
> wrote:
>>
>> All my attempts at using TeX spacing failed too. What do you have in mind?
>>
>> e.g.
>> text(xlim()[1],1.02,r'$r^\;2$~~~',horizontalalignment='right')
>>
>>
>> Jae-Joon Lee wrote:
>>>
>>> While I think you're not using usetex mode, you may use tex's own
>>> spacing command with usetex mode. Depending on your need, you may also
>>> use the annotate function with which you can provide a spacing in
>>> pixel coordinate (or other coordinate the annotate supports).
>>>
>>
>> --
>> View this message in context:
>> http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25653573.html
>> Sent from the matplotlib - users mailing list archive at Nabble.com.
>>
>>
>> --
>> Come build with us! The BlackBerry® Developer Conference in SF, CA
>> is the only developer event you need to attend this year. Jumpstart your
>> developing skills, take BlackBerry mobile applications to market and stay
>> ahead of the curve. Join us from November 9-12, 2009. Register now!
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>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>
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Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
You need an empty mbox at the end of line (\mbox{}).
text(xlim()[1],1.02,r'$r^2$~~~\mbox{}',horizontalalignment='right')
If you did mean \; after ^, it requires {}.
Again, these only works if you use real TeX for text rendering (ie
usetex=True), not the mpl's mathtext mode.
Regards,
-JJ
On Mon, Sep 28, 2009 at 5:48 PM, Christopher Barrington-Leigh
wrote:
>
> All my attempts at using TeX spacing failed too. What do you have in mind?
>
> e.g.
> text(xlim()[1],1.02,r'$r^\;2$~~~',horizontalalignment='right')
>
>
> Jae-Joon Lee wrote:
>>
>> While I think you're not using usetex mode, you may use tex's own
>> spacing command with usetex mode. Depending on your need, you may also
>> use the annotate function with which you can provide a spacing in
>> pixel coordinate (or other coordinate the annotate supports).
>>
>
> --
> View this message in context:
> http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25653573.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
> --
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> ahead of the curve. Join us from November 9-12, 2009. Register now!
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Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
All my attempts at using TeX spacing failed too. What do you have in mind? e.g. text(xlim()[1],1.02,r'$r^\;2$~~~',horizontalalignment='right') Jae-Joon Lee wrote: > > While I think you're not using usetex mode, you may use tex's own > spacing command with usetex mode. Depending on your need, you may also > use the annotate function with which you can provide a spacing in > pixel coordinate (or other coordinate the annotate supports). > -- View this message in context: http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25653573.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Thanks. Unfortunately this gives me the same results: no good. Something is stripping whatever filler is there on the right. text(xlim()[1],1.01,'string'.ljust(10,' '),horizontalalignment='right') John [H2O] wrote: > > > > Christopher Barrington-Leigh wrote: >> >> Hello. My problem is as follows: >> (ipython --pylab) >> >> from pylab import * >> pp=plot([0,0],[1,1]) >> text(xlim()[0],1,'Need padding ',horizontalalignment='left') >> text(xlim()[1],1,'Need padding ',horizontalalignment='right') >> >> >> The second case does not do what I want, which is to pad the text on the >> right. Text strings are stripped on the right, but no on the left. How >> can I elegantly create a character of space? >> >> Thanks! >> c >> > > Untested, but I think you could do this with just python builtin types: > > from pylab import * > pp=plot([0,0],[1,1]) > text(xlim()[0],1,'string'.ljust(10,' ')) > text(xlim()[1],1,'string'.rjust(10,' ')) > > See the documention: > http://docs.python.org/library/stdtypes.html > > str.ljust(width[, fillchar])¶ > > Return the string left justified in a string of length width. Padding is > done using the specified fillchar (default is a space). The original > string is returned if width is less than len(s). > > Changed in version 2.4: Support for the fillchar argument. > > > -- View this message in context: http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25653331.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Thanks. Unfortunately this gives me the same results: no good. Something is stripping whatever filler is there on the right. text(xlim()[1],1.01,'string'.ljust(10,' '),horizontalalignment='right') John [H2O] wrote: > > Untested, but I think you could do this with just python builtin types: > > from pylab import * > pp=plot([0,0],[1,1]) > text(xlim()[0],1,'string'.ljust(10,' ')) > text(xlim()[1],1,'string'.rjust(10,' ')) > > See the documention: > http://docs.python.org/library/stdtypes.html > > str.ljust(width[, fillchar])¶ > > Return the string left justified in a string of length width. Padding is > done using the specified fillchar (default is a space). The original > string is returned if width is less than len(s). > > Changed in version 2.4: Support for the fillchar argument. > > > -- View this message in context: http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25653325.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
I can confirm this with latest svn. I take a quick look at the code, but couldn't figure where the stripping happens and I hope other experts to step in. While I think you're not using usetex mode, you may use tex's own spacing command with usetex mode. Depending on your need, you may also use the annotate function with which you can provide a spacing in pixel coordinate (or other coordinate the annotate supports). Regards, -JJ On Sun, Sep 27, 2009 at 9:57 PM, Christopher Barrington-Leigh wrote: > > Hello. My problem is as follows: > (ipython --pylab) > > from pylab import * > pp=plot([0,0],[1,1]) > text(xlim()[0],1,' Need padding ',horizontalalignment='left') > text(xlim()[1],1,' Need padding ',horizontalalignment='right') > > > The second case does not do what I want, which is to pad the text on the > right. Text strings are stripped on the right, but no on the left. How can I > elegantly create a character of space? > > Thanks! > c > -- > View this message in context: > http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25639703.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > > > -- > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > ___ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Christopher Barrington-Leigh wrote: > > Hello. My problem is as follows: > (ipython --pylab) > > from pylab import * > pp=plot([0,0],[1,1]) > text(xlim()[0],1,'Need padding ',horizontalalignment='left') > text(xlim()[1],1,'Need padding ',horizontalalignment='right') > > > The second case does not do what I want, which is to pad the text on the > right. Text strings are stripped on the right, but no on the left. How can > I elegantly create a character of space? > > Thanks! > c > Untested, but I think you could do this with just python builtin types: from pylab import * pp=plot([0,0],[1,1]) text(xlim()[0],1,'string'.ljust(10,' ')) text(xlim()[1],1,'string'.rjust(10,' ')) See the documention: http://docs.python.org/library/stdtypes.html str.ljust(width[, fillchar])¶ Return the string left justified in a string of length width. Padding is done using the specified fillchar (default is a space). The original string is returned if width is less than len(s). Changed in version 2.4: Support for the fillchar argument. -- View this message in context: http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25653102.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] trailing space in text string stripped, making it impossible to right-pad my text
Hello. My problem is as follows: (ipython --pylab) from pylab import * pp=plot([0,0],[1,1]) text(xlim()[0],1,'Need padding ',horizontalalignment='left') text(xlim()[1],1,'Need padding ',horizontalalignment='right') The second case does not do what I want, which is to pad the text on the right. Text strings are stripped on the right, but no on the left. How can I elegantly create a character of space? Thanks! c -- View this message in context: http://www.nabble.com/trailing-space-in-text-string-stripped%2C-making-it-impossible-to-right-pad-my-text-tp25639703p25639703.html Sent from the matplotlib - users mailing list archive at Nabble.com. -- Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
