matplotlib-devel Mailing List for matplotlib

On 2/13/07, Nicolas Grilly <nic...@ga...> wrote:
> Here is a patch I promised some time ago, to improve the PDF backend.
Jouni,
I'm going to leave this up to you, but Nicolas this looks very nice. Thanks!
JDH

Here is a patch I promised some time ago, to improve the PDF backend.
I use it to produce charts and integrate them in documents generated
by pdfTeX and ConTeXt. It's very handy because pdfTeX natively handles
PDF graphics, without any conversion.
The patched backend is able to use the 14 PDF core fonts. These fonts
are embedded in every PDF viewing applications. So you can produce
charts contained in very small PDF files, easy to integrate in LaTeX
or ConTeXt through pdfTeX.
My patch is the attached file mpl_pdf_backend_patch.patch.
You also need to untar the attached file pdfcorefonts.tar in
lib/matplotlib/mpl-data/fonts in order to create a directory
pdfcorefonts holdings AFM files for the 14 PDF core fonts.
Does this patch work for you? Do you agree to commit it in SVN?
Thanks,
Nicolas Grilly
A summary of changes:
- Created a directory lib/matplotlib/mpl-data/fonts/pdfcorefonts,
 holding AFM files for the 14 PDF core fonts. These fonts are
 embedded in every PDF viewing applications.
- setup.py: Added the directory pdfcorefonts to package_data.
- lib/matplotlib/__init__.py: Added the default parameter
 'pdf.use14corefonts'. When True, the PDF backend use only
 the 14 PDF core fonts.
- lib/matplotlib/afm.py: Added some keywords found in recent
 AFM files. Added a little workaround to handle Euro symbol.
- lib/matplotlib/fontmanager.py: Added support for 14 PDF
 core fonts. These fonts have a dedicated cache (file
 pdfcorefont.cache), not the same as for other AFM files
 (file .afmfont.cache). Also cleaned comments to conform to
 CODING_GUIDE.
- lib/matplotlib/backends/backend_pdf.py:
 Added support for 14 PDF core fonts.
 Fixed some issues with incorrect character widths and
 encodings (works only for the most common encoding,
 WinAnsiEncoding, defined by the official PDF Reference).
 Removed parameter 'dpi' because it causes alignment issues
 (the notion of DPI seems useless in a vectorial format, unless
 we use it for image magnification, like in backend_ps.py).

I suppose the year of the last entries of CHANGELOG is 2007, not 2006.
Regards,
Nicolas Grilly

On 2/13/07, John Hunter <jd...@gm...> wrote:
> On 2/12/07, Andrew Straw <str...@as...> wrote:
> > Great, thanks for checking that in.
> >
> > It looks like images/*.png didn't make it in.
>
> OK, I committed these. I'm not sure why they didn't go in the first
> time since they were in my mpl-data/images dir when I added it. Give
> it a test drive.
I've checked out this (with the PNG files !) and it works perfectly. Thanks!
Nicolas

On 2/12/07, Andrew Straw <str...@as...> wrote:
> Great, thanks for checking that in.
>
> It looks like images/*.png didn't make it in.
OK, I committed these. I'm not sure why they didn't go in the first
time since they were in my mpl-data/images dir when I added it. Give
it a test drive.

John Hunter wrote:
 > Thanks for the suggestion -- I did this automagically with
> 
> # add british equivs
> for k, v in cnames.items():
> if k.find('gray')>=0:
> k = k.replace('gray', 'grey')
> cnames[k] = v
Just noticed that 'lightgrey' is still in the cnames dict, which means 
that 'lightgray' is an invalid name. Here's the patch.
Cheers,
Martin

> # add british equivs
> for k, v in cnames.items():
> if k.find('gray')>=0:
> k = k.replace('gray', 'grey')
> cnames[k] = v
Neat, that's a much better idea.
> Note that in pylab, you can get some extra information by doing
> 
>>>> help(colors)
Thanks. I really like all the new auto-generated kwarg properties that 
are showing up in the docstrings now. I just noticed them today as I 
upgraded to 0.90.
Martin

Andrew Straw wrote:
> Great, thanks for checking that in.
>
> It looks like images/*.png didn't make it in.
> 
And, grr, I can't put them in, either:
$ svn commit -m "added .png files that didn't make it into new mpl-data 
location" images
Adding (bin) images/back.png
svn: Commit failed (details follow):
svn: COPY of back.png: 403 Forbidden (https://svn.sourceforge.net)
> John Hunter wrote:
> 
>> On 2/12/07, Andrew Straw <str...@as...> wrote:
>>
>> 
>> 
>>> So, I sent the patch file to John, who'll hopefully commit it if he
>>> approves. To paraphrase Robert Kern, "Working code ends all arguments".
>>> So, since this was the nested way, and the biggest reason against it was
>>> that it require code change, well, I changed the code, and perhaps the
>>> arguments are ended?
>>>
>>> Because I did change a fair amount of data_path -using code, it'd be
>>> good to exercise all your favorite font and image finding sections of
>>> code. The bits I tried worked for me, of course, but no guarantees...
>>> 
>>> 
>> OK, with a sledgehammer and a prayer, I got it in. I got the same
>> error you did, and then had to physically remove mpl-data and it's
>> contents from svn and commit, restore everything in the new order and
>> commit again. It compiled, installed and ran, passing the tests I
>> threw at it.
>>
>> I only ran about half of backend driver before I grew impatient, so
>> others may want to do some additional testing. I copied your note
>> from CHANGELOG to API_CHANGES.
>>
>> I suggest flushing your old mpl-data in site-packages/matplotlib as
>> well as your ~/.matplotlib/ttffont.cache file before testing.
>>
>> Thanks for settling the argument!
>>
>> JDH
>>
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