Very nice!
I'm currently getting this traceback with the PDF backend, whether
"text.latex.preview" is True or False -- so it may be unrelated to your
change, but I'm unable to test PDF at the moment.
Traceback (most recent call last):
File "usetex_baseline_test.py", line 75, in <module>
plt.savefig("test.pdf")
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/pyplot.py", line
345, in savefig
return fig.savefig(*args, **kwargs)
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/figure.py", line
990, in savefig
self.canvas.print_figure(*args, **kwargs)
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/backend_bases.py",
line 1429, in print_figure
**kwargs)
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/backend_bases.py",
line 1323, in print_pdf
return pdf.print_pdf(*args, **kwargs)
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/backends/backend_pdf.py",
line 1911, in print_pdf
file.close()
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/backends/backend_pdf.py",
line 440, in close
self.writeFonts()
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/backends/backend_pdf.py",
line 521, in writeFonts
fontdictObject = self.embedType1(filename, self.dviFontInfo[filename])
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/backends/backend_pdf.py",
line 553, in embedType1
t1font = type1font.Type1Font(fontinfo.fontfile)
File
"/home/mdroe/usr/lib/python2.5/site-packages/matplotlib/type1font.py",
line 55, in __init__
file = open(input, 'rb')
Also, it seems like the text alignment in the PS output is too low by a
small constant factor.
Assuming those issues can be resolved, is there now any reason to use
dviread, assuming preview.sty is installed? If the preview.sty approach
is superior, I wonder if we could:
a) Determine if preview.sty is installed, and if so, use it, otherwise
fallback to dviread? (Then we could be a default "auto" setting for the
rcParam).
b) Or better, include preview.sty with matplotlib and use it instead of
a system installed copy, so that it's always available. (This is both a
licensing and version-compatibility question, really...)
It would be great to make this new behavior with the proper baseline
more automatic.
Cheers,
Mike
Jae-Joon Lee wrote:
> Hello,
>
> I committed a patch to optionally use preview.sty with usetex=True.
> This is to support a baseline alignment.
>
> A summary of changes:
>
> * added a get_text_width_height_descent() method in the TexManager
> class, and modified the agg, ps and pdf backends to utilize this
> method.
>
> * added a new rc parameter, 'text.latex.preview'. If True,
> preview.sty is used to generate dvi files and baseline information of
> each dvi file is stored in a separate file.
> TexManager.get_text_width_height_descent() method uses this
> information.
>
> * If text.latex.preview==False,
> TexManager.get_text_width_height_descent() method uses dviread module
> (this is what the pdf backend has been using), but the returned
> descent value of the text is sometimes incorrect.
>
> * added an example ("usetex_baseline_test.py" ). The output is
> attached with this email.
>
> If you have a preview.sty installed, please test this (set
> "text.latex.preview=True" in you rc file) and report any problems.
> Regards,
>
> -JJ
>
>
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--
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA
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