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

[Michael D. <md...@st...>]

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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