Is there a way to use non english symbols?

asked 2016-07-12 13:20:04 +0200

Sergey Pashinin
41 ●1 ●2 ●3

updated 2023-01-09 23:59:40 +0200

tmonteil
27323 ●31 ●202 ●514 http://wiki.sagemath.o...

I try a simple command:

Graph({'Б':[1,2]}).plot().save("/tmp/plot.png")

but it fails:

/usr/lib/sagemath/local/lib/python2.7/site-packages/matplotlib-1.5.1-py2.7-linux-x86_64.egg/matplotlib/text.py in set_text(self, s)
   1204         ACCEPTS: string or anything printable with '%s' conversion.
   1205         """
-> 1206         self._text = '%s' % (s,)
   1207         self.stale = True
   1208 

UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 0: ordinal not in range(128)

How can I draw a graph with not only english symbols?

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Comments

kcrisman ( 2016-07-12 16:07:53 +0200 )edit

Thanks for reporting !

tmonteil ( 2016-07-13 12:21:24 +0200 )edit

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2 Answers

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answered 2016-08-18 12:42:54 +0200

Eugene
623 ●20 ●36 ●48

updated 2016-08-18 12:44:22 +0200

I've encountered the same problem attempting label axes with Cyrillic letters. In Sage 7.3 the following code:

plot(sin, 0, pi, axes_labels=(ur'Ось абсцисс $x$', ur'Ось ординат $y$'))

Yields warning and display dummy-characters instead of Cyrillic letters:

MathTextWarning: Font 'default' does not have a glyph for '\u0441' [U441]

After some testing I ended up with the following code to prepare graphics to include in LaTeX, and it works in Sage 7.3 with Cyrillic letters as well (possibly requires Computer Modern Unicode font to be installed):

from matplotlib import rc

rc('text', usetex=True)
rc('text.latex', unicode=True)
rc('text.latex', preamble='\usepackage[utf8]{inputenc}')
rc('text.latex', preamble='\usepackage[russian]{babel}')

font = {'family': 'serif',
        'serif': ['Computer Modern Unicode'],
        'size': 12,
        }

rc('font', **font)

plot(sin, 0, pi, axes_labels=(ur'Ось абсцисс $x$', ur'Ось ординат $y$'))

P.S. Before that issue resolved I had to rename all axes manually, so whoever fixed it or helped fixing it - many thanks!!!