Re: [Matplotlib-users] rendering unicode using the PDF backend

[Mark J. <mja...@es...>]

I downloaded DejaVu Sans and pointed to that ttf file, and no love :(...  Again, the default font seems to work for English, French, German, Spanish, Italian other Euros etal... but Chinese and Arabic either come out blank (default font, DejaVu Sans) or choke on the glyphs (MS Unicode).

MJ

From: Michael Droettboom [mailto:md...@st...]
Sent: Tuesday, February 07, 2012 6:56 AM
To: mat...@li...
Subject: Re: [Matplotlib-users] rendering unicode using the PDF backend

It looks like perhaps we'll need to "synthesize" glyph names if they aren't provided in the font (though it's not clear to me why they are not).  This will be difficult to test for, as that's a proprietary font.  Have you tried using another Unicode font, such as DejaVu Sans?

Mike

On 02/06/2012 06:53 PM, Mark Janikas wrote:
Hi All,

I am having trouble rendering my Unicode strings in matplotlib using the PDF backend.   When I use certain fonts  (like the Win 7 default), I get no complaints but the characters are not rendered.... When I use a font like Arial Unicode MS, that I know contains all the chars, then I get the error message below.  I did in fact, find a tty file that would work with Chinese ("Microsoft YaHei"), but I would like to avoid trying to map font files to languages.  Any info on this subject would be greatly appreciated.  Here is a snippet that reproduces the error below... if you remove the fontproperties option to the PYLAB.xlabel() call then the error is avoided but the result is not rendered.  Thanks so much!

MJ


import matplotlib.pyplot as PLT
import pylab as PYLAB
from matplotlib.backends.backend_pdf import PdfPages as PDF
import matplotlib.font_manager as fm

fontFile = r'C:\Windows\Fonts\ARIALUNI.TTF'
fp1 = fm.FontProperties(fname=fontFile)

reportFile = r'C:\Temp\TestUnicode.pdf'
pdfOutput = PDF(reportFile)
vals = range(100)

PLT.plot(vals, vals, color = "r", linestyle = "-")
mess = u'\u6B63\u5728\u8BFB\u53D6\u6570\u636E...'
PYLAB.xlabel(mess, fontproperties = fp1)
PLT.savefig(pdfOutput, format='pdf')
PLT.close()
pdfOutput.close()



Traceback (most recent call last):
  File "C:\Data\CRs\10.1\MemLeak\matplotlib\Scripts\matplotlib_unicode.py", line 27, in <module>
    PLT.savefig(pdfOutput, format='pdf')
  File "C:\Python27\lib\site-packages\matplotlib\pyplot.py", line 472, in savefig
    return fig.savefig(*args, **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\figure.py", line 1173, in savefig
    self.canvas.print_figure(*args, **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\backend_bases.py", line 2027, in print_figure
    **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\backends\backend_pdf.py", line 2181, in print_pdf
    self.figure.draw(renderer)
  File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\figure.py", line 886, in draw
    func(*args)
  File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\axes.py", line 1983, in draw
    a.draw(renderer)
  File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\axis.py", line 1054, in draw
    self.label.draw(renderer)
  File "C:\Python27\lib\site-packages\matplotlib\artist.py", line 55, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "C:\Python27\lib\site-packages\matplotlib\text.py", line 587, in draw
    ismath=ismath)
  File "C:\Python27\lib\site-packages\matplotlib\backends\backend_pdf.py", line 1784, in draw_text
    return draw_text_woven(chunks)
  File "C:\Python27\lib\site-packages\matplotlib\backends\backend_pdf.py", line 1754, in draw_text_woven
    glyph_name = font.get_glyph_name(gind)
RuntimeError: Face has no glyph names










PS.  I cannot use a different backend.




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