Problem with importing LaTeX package amsmath and $\text{}$

Community matplotlib-users
1

Hello,

I’ve been having some troubles with LaTeX in matplotlib. My example script:

#!/usr/bin/env python2
#-- coding: utf-8 --

author = ‘Pawel Chojnacki’

copyright =‘Copyleft 2013 Pawel Chojnacki’
version = ‘1.0’
date = ‘29-03-2013’
license = ‘GPLv3’

import numpy as np
import matplotlib as mpl # Zmiana ustawien LaTeXa

mpl.rcParams[‘text.latex.preamble’].append(r’\usepackage{amsmath}’)
#~ mpl.rcParams[‘text.latex.preamble’] = r’\usepackage{amsmath}’
#~ mpl.rcParams[‘text.latex.preamble’]=[r"\usepackage{amsmath}"]

#~ mpl.rcParams[‘math.usetex’] = True
print mpl.rcParams[‘text.latex.preamble’]
import pylab as py

py.axhspan(8400,8730,alpha=0.15)
py.title(u’Wyniki eksperymentu pomiaru gęstości ciała stałego\n’,size=‘large’,family=‘serif’)

py.ylabel((u’Gęstość ciała stałego ’ + r’$\frac{kg}{m^3}$’),size=‘large’,family=‘serif’)
#~ py.ylabel((r’$\text{lol}$’),size=‘large’,family=‘serif’)
py.ylabel((r’$\text{lol}$’),size=‘large’,family=‘serif’)

py.xlabel(u’Metoda pomiaru’,size=‘large’,family=‘serif’)
py.grid(True)
py.show()

Gives me the following output:

[’’, ‘\usepackage{amsmath}’]
Exception in Tkinter callback

Traceback (most recent call last):
File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call
return self.func(*args)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize

self.show()

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw
FigureCanvasAgg.draw(self)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw

self.figure.draw(self.renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw

func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw

a.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 1054, in draw

self.label.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 526, in draw

bbox, info = self._get_layout(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout
ismath=ismath)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 193, in get_text_width_height_descent

self.mathtext_parser.parse(s, self.dpi, prop)

File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2999, in parse
box = self._parser.parse(s, font_output, fontsize, dpi)
File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2357, in parse

self._expression.parseString(s)

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 1048, in parseString
loc, tokens = self._parse( instring, 0 )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2559, in parseImpl
return self.expr._parse( instring, loc, doActions, callPreParse=False )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2307, in parseImpl
loc, exprtokens = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2672, in parseImpl
loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2307, in parseImpl
loc, exprtokens = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2416, in parseImpl
ret = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 950, in _parseNoCache
tokens = fn( instring, tokensStart, retTokens )

File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2050, in raise_error
raise ParseFatalException(msg + “\n” + s)
ParseFatalException: Expected end of math ‘$’
$\text{lol}$ (at char 0), (line:1, col:1)

And a blank window. The same line - $\text{lol}$ works pretty well in pure LaTeX. While the package seems loaded, matplotlib doesn’t send the command as it’s supposed to. Why is that?

Thanks in advance,

Pawel

2

Doesn’t look like you’re using math.usetex & therefore are not actually using latex, but mpl’s stripped down tex implementation.

Try setting usetex to True, or alternatively I think you could use \mathrm instead of \text to get non mathematical text.

HTH

···

On 30 March 2013 11:43, Pawel Chojnacki <chojnacki.pawel@…4330…> wrote:

Hello,

I’ve been having some troubles with LaTeX in matplotlib. My example script:

#!/usr/bin/env python2
#-- coding: utf-8 --

author = ‘Pawel Chojnacki’

copyright =‘Copyleft 2013 Pawel Chojnacki’
version = ‘1.0’
date = ‘29-03-2013’
license = ‘GPLv3’

import numpy as np
import matplotlib as mpl # Zmiana ustawien LaTeXa

mpl.rcParams[‘text.latex.preamble’].append(r’\usepackage{amsmath}‘)
#~ mpl.rcParams[‘text.latex.preamble’] = r’\usepackage{amsmath}’
#~ mpl.rcParams[‘text.latex.preamble’]=[r"\usepackage{amsmath}"]

#~ mpl.rcParams[‘math.usetex’] = True
print mpl.rcParams[‘text.latex.preamble’]
import pylab as py

py.axhspan(8400,8730,alpha=0.15)
py.title(u’Wyniki eksperymentu pomiaru gęstości ciała stałego\n’,size=‘large’,family=‘serif’)

py.ylabel((u’Gęstość ciała stałego ’ + r’\frac{kg}{m^3}‘),size=‘large’,family=‘serif’)
#~ py.ylabel((r’\text{lol}‘),size=‘large’,family=‘serif’)
py.ylabel((r’\text{lol}'),size=‘large’,family=‘serif’)

py.xlabel(u’Metoda pomiaru’,size=‘large’,family=‘serif’)
py.grid(True)
py.show()

Gives me the following output:

[‘’, ‘\usepackage{amsmath}’]
Exception in Tkinter callback

Traceback (most recent call last):
File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call
return self.func(*args)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize

self.show()

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw
FigureCanvasAgg.draw(self)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw

self.figure.draw(self.renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw

func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw

a.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 1054, in draw

self.label.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 526, in draw

bbox, info = self._get_layout(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout
ismath=ismath)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 193, in get_text_width_height_descent

self.mathtext_parser.parse(s, self.dpi, prop)

File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2999, in parse
box = self._parser.parse(s, font_output, fontsize, dpi)
File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2357, in parse

self._expression.parseString(s)

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 1048, in parseString
loc, tokens = self._parse( instring, 0 )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2559, in parseImpl
return self.expr._parse( instring, loc, doActions, callPreParse=False )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2307, in parseImpl
loc, exprtokens = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2672, in parseImpl
loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2307, in parseImpl
loc, exprtokens = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2416, in parseImpl
ret = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 950, in _parseNoCache
tokens = fn( instring, tokensStart, retTokens )

File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2050, in raise_error
raise ParseFatalException(msg + “\n” + s)
ParseFatalException: Expected end of math '' \text{lol}$ (at char 0), (line:1, col:1)

And a blank window. The same line - \text{lol} works pretty well in pure LaTeX. While the package seems loaded, matplotlib doesn’t send the command as it’s supposed to. Why is that?

Thanks in advance,

Pawel

Own the Future-Intel(R) Level Up Game Demo Contest 2013

Rise to greatness in Intel’s independent game demo contest. Compete

for recognition, cash, and the chance to get your game on Steam.

$5K grand prize plus 10 genre and skill prizes. Submit your demo

by 6/6/13. http://altfarm.mediaplex.com/ad/ck/12124-176961-30367-2

Matplotlib-users mailing list

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https://lists.sourceforge.net/lists/listinfo/matplotlib-users

3

Please pardon me, but what object is math.usetex attribute of? I can’t find it in the documentation.

http://matplotlib.org/users/usetex.html Mentions only text.usetex.

···

2013/3/30 Phil Elson <pelson.pub@…287…>

Doesn’t look like you’re using math.usetex & therefore are not actually using latex, but mpl’s stripped down tex implementation.

Try setting usetex to True, or alternatively I think you could use \mathrm instead of \text to get non mathematical text.

HTH

On 30 March 2013 11:43, Pawel Chojnacki <chojnacki.pawel@…4330…> wrote:

Hello,

I’ve been having some troubles with LaTeX in matplotlib. My example script:

#!/usr/bin/env python2
#-- coding: utf-8 --

author = ‘Pawel Chojnacki’

copyright =‘Copyleft 2013 Pawel Chojnacki’
version = ‘1.0’
date = ‘29-03-2013’
license = ‘GPLv3’

import numpy as np
import matplotlib as mpl # Zmiana ustawien LaTeXa

mpl.rcParams[‘text.latex.preamble’].append(r’\usepackage{amsmath}‘)
#~ mpl.rcParams[‘text.latex.preamble’] = r’\usepackage{amsmath}’
#~ mpl.rcParams[‘text.latex.preamble’]=[r"\usepackage{amsmath}"]

#~ mpl.rcParams[‘math.usetex’] = True
print mpl.rcParams[‘text.latex.preamble’]
import pylab as py

py.axhspan(8400,8730,alpha=0.15)
py.title(u’Wyniki eksperymentu pomiaru gęstości ciała stałego\n’,size=‘large’,family=‘serif’)

py.ylabel((u’Gęstość ciała stałego ’ + r’\frac{kg}{m^3}‘),size=‘large’,family=‘serif’)
#~ py.ylabel((r’\text{lol}‘),size=‘large’,family=‘serif’)
py.ylabel((r’\text{lol}'),size=‘large’,family=‘serif’)

py.xlabel(u’Metoda pomiaru’,size=‘large’,family=‘serif’)
py.grid(True)
py.show()

Gives me the following output:

[‘’, ‘\usepackage{amsmath}’]
Exception in Tkinter callback

Traceback (most recent call last):
File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call
return self.func(*args)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize

self.show()

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw
FigureCanvasAgg.draw(self)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw

self.figure.draw(self.renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw

func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw

a.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 1054, in draw

self.label.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 526, in draw

bbox, info = self._get_layout(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout
ismath=ismath)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 193, in get_text_width_height_descent

self.mathtext_parser.parse(s, self.dpi, prop)

File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2999, in parse
box = self._parser.parse(s, font_output, fontsize, dpi)
File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2357, in parse

self._expression.parseString(s)

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 1048, in parseString
loc, tokens = self._parse( instring, 0 )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2559, in parseImpl
return self.expr._parse( instring, loc, doActions, callPreParse=False )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2307, in parseImpl
loc, exprtokens = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2672, in parseImpl
loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2307, in parseImpl
loc, exprtokens = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 924, in _parseNoCache
loc,tokens = self.parseImpl( instring, preloc, doActions )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 2416, in parseImpl
ret = e._parse( instring, loc, doActions )
File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 981, in _parseCache

value = self._parseNoCache( instring, loc, doActions, callPreParse )

File “/usr/lib/pymodules/python2.7/matplotlib/pyparsing.py”, line 950, in _parseNoCache
tokens = fn( instring, tokensStart, retTokens )

File “/usr/lib/pymodules/python2.7/matplotlib/mathtext.py”, line 2050, in raise_error
raise ParseFatalException(msg + “\n” + s)
ParseFatalException: Expected end of math '' \text{lol}$ (at char 0), (line:1, col:1)

And a blank window. The same line - \text{lol} works pretty well in pure LaTeX. While the package seems loaded, matplotlib doesn’t send the command as it’s supposed to. Why is that?

Thanks in advance,

Pawel

Own the Future-Intel(R) Level Up Game Demo Contest 2013

Rise to greatness in Intel’s independent game demo contest. Compete

for recognition, cash, and the chance to get your game on Steam.

$5K grand prize plus 10 genre and skill prizes. Submit your demo

by 6/6/13. http://altfarm.mediaplex.com/ad/ck/12124-176961-30367-2

Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

4

You need to set
  mpl.rcParams['text.usetex'] = True

For text you need unicode, for latex raw encoding.
To have text and latex in one line, use
  xlabel(u'H�allo '+r'\\varphi'+ 'r')

Works for me, at least.

···

Am 30.03.2013 16:29, schrieb Pawel Chojnacki:

Please pardon me, but what object is math.usetex attribute of? I can't find it in the documentation.

http://matplotlib.org/users/usetex.html Mentions only text.usetex.

5

2013/3/30 Juergen Hasch <python@…4224…>

···

Am 30.03.2013 16:29, schrieb Pawel Chojnacki:

Please pardon me, but what object is math.usetex attribute of? I can’t find it in the documentation.

http://matplotlib.org/users/usetex.html Mentions only text.usetex.

You need to set

    mpl.rcParams['text.usetex'] = True

For text you need unicode, for latex raw encoding.

To have text and latex in one line, use

    xlabel(u'Häallo '+r'$\varphi$'+ 'r')

Works for me, at least.

I’ve already tried that, and I got the response:

[‘’, ‘\usepackage{amsmath}’]
Exception in Tkinter callback
Traceback (most recent call last):
File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call

return self.func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize
self.show()
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw

FigureCanvasAgg.draw(self)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw
self.figure.draw(self.renderer)
File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw
func(*args)
File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw
a.draw(renderer)
File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 526, in draw
bbox, info = self._get_layout(renderer)
File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout

ismath=ismath)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 188, in get_text_width_height_descent
renderer=self)
File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 606, in get_text_width_height_descent

dvifile = self.make_dvi(tex, fontsize)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 351, in make_dvi
texfile = self.make_tex(tex, fontsize)
File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 259, in make_tex

fh.write(s)

UnicodeEncodeError: ‘ascii’ codec can’t encode character u’\u0119’ in position 349: ordinal not in range(128)

And after adding:
mpl.rcParams[‘text.latex.preamble’].append(r’\usepackage{amsmath},\usepackage[utf8]{inputenc}')

I got:

[‘’, ‘\usepackage{amsmath},\usepackage[utf8]{inputenc}’]
Exception in Tkinter callback
Traceback (most recent call last):
File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call

return self.func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize
self.show()
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw

FigureCanvasAgg.draw(self)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw
self.figure.draw(self.renderer)
File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw
func(*args)
File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw
a.draw(renderer)
File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 1042, in draw
ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw, renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 993, in _get_tick_bboxes
extent = tick.label1.get_window_extent(renderer)
File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 747, in get_window_extent

bbox, info = self._get_layout(self._renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout
ismath=ismath)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 188, in get_text_width_height_descent

renderer=self)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 606, in get_text_width_height_descent
dvifile = self.make_dvi(tex, fontsize)
File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 371, in make_dvi

string:\n%s\nHere is the full report generated by LaTeX: \n\n'% repr(tex)) + report)

RuntimeError: LaTeX was not able to process the following string:
‘0.2’
Here is the full report generated by LaTeX:

This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian)
restricted \write18 enabled.
entering extended mode
(./d9d8962c45871ca6b62e5d3dffbe49ab.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, po

lish, loaded.
(/usr/share/texlive/texmf-dist/tex/latex/base/article.cls
Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo))
(/usr/share/texlive/texmf-dist/tex/latex/type1cm/type1cm.sty)

(/usr/share/texlive/texmf-dist/tex/latex/psnfss/helvet.sty
(/usr/share/texlive/texmf-dist/tex/latex/graphics/keyval.sty))
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/courier.sty)
(/usr/share/texlive/texmf-dist/tex/latex/base/textcomp.sty

(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.def))
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?’ option.
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amstext.sty

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsgen.sty))
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsbsy.sty)
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsopn.sty))

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type H for immediate help.
…

l.9 \usepackage{amsmath},

                     \usepackage[utf8]{inputenc}

(/usr/share/texlive/texmf-dist/tex/latex/base/inputenc.sty
(/usr/share/texlive/texmf-dist/tex/latex/base/utf8.def
(/usr/share/texlive/texmf-dist/tex/latex/base/t1enc.dfu)

(/usr/share/texlive/texmf-dist/tex/latex/base/ot1enc.dfu)
(/usr/share/texlive/texmf-dist/tex/latex/base/omsenc.dfu)
(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.dfu)))
(/usr/share/texlive/texmf-dist/tex/latex/geometry/geometry.sty

(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifpdf.sty)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifvtex.sty)
(/usr/share/texlive/texmf-dist/tex/generic/ifxetex/ifxetex.sty)

Package geometry Warning: Over-specification in `h’-direction.

`width' (5058.9pt) is ignored.

Package geometry Warning: Over-specification in v'-direction. height’ (5058.9pt) is ignored.

)
No file d9d8962c45871ca6b62e5d3dffbe49ab.aux.

(/usr/share/texlive/texmf-dist/tex/latex/base/ts1cmr.fd)
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/ot1pnc.fd)
geometry driver: auto-detecting
geometry detected driver: dvips
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/ot1phv.fd) [1]

(./d9d8962c45871ca6b62e5d3dffbe49ab.aux) )
(see the transcript file for additional information)
Output written on d9d8962c45871ca6b62e5d3dffbe49ab.dvi (1 page, 340 bytes).
Transcript written on d9d8962c45871ca6b62e5d3dffbe49ab.log.

And I really don’t get what’s happening :S

6

I tested it under Linux now, and I see your problem. The latex files don't compile cleanly, this is why you get the error. You can find the .tex files under ~./matplotlib/tex.cache

It looks like you have a problem with the font encoding when using unicode characters.
This works for me under Linux and Windows:

import numpy as np
import matplotlib as mpl
mpl.rcParams['text.latex.preamble'] = [r'\usepackage{amsmath}' , r'\usepackage[T1]{fontenc}']
mpl.rcParams['text.latex.unicode'] = True
mpl.rcParams['text.usetex'] = True

import pylab as py

py.axhspan(8400,8730,alpha=0.15)
py.title(u'Wyniki eksperymentu pomiaru gęstości ciała stałego',size='large',family='serif')
py.ylabel(r'\\text\{lol\}',size='large',family='serif')
py.grid(True)
py.show()

···

Am 30.03.2013 22:15, schrieb Pawel Chojnacki:

2013/3/30 Juergen Hasch <python@...4224... <mailto:python@…4224…>>

    Am 30.03.2013 16:29, schrieb Pawel Chojnacki:
     > Please pardon me, but what object is math.usetex attribute of? I can't find it in the documentation.
     >
     > http://matplotlib.org/users/usetex.html Mentions only text.usetex.
     >

    You need to set
             mpl.rcParams['text.usetex'] = True

    For text you need unicode, for latex raw encoding.
    To have text and latex in one line, use
             xlabel(u'Häallo '+r'\\varphi'+ 'r')

    Works for me, at least.

I've already tried that, and I got the response:

['', '\\usepackage{amsmath}']
Exception in Tkinter callback
Traceback (most recent call last):
   File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1437, in __call__
     return self.func(*args)
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 236, in resize
     self.show()
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 239, in draw
     FigureCanvasAgg.draw(self)
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py", line 421, in draw
     self.figure.draw(self.renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/usr/lib/pymodules/python2.7/matplotlib/figure.py", line 898, in draw
     func(*args)
   File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 1997, in draw
     a.draw(renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/usr/lib/pymodules/python2.7/matplotlib/text.py", line 526, in draw
     bbox, info = self._get_layout(renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/text.py", line 309, in _get_layout
     ismath=ismath)
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py", line 188, in get_text_width_height_descent
     renderer=self)
   File "/usr/lib/pymodules/python2.7/matplotlib/texmanager.py", line 606, in get_text_width_height_descent
     dvifile = self.make_dvi(tex, fontsize)
   File "/usr/lib/pymodules/python2.7/matplotlib/texmanager.py", line 351, in make_dvi
     texfile = self.make_tex(tex, fontsize)
   File "/usr/lib/pymodules/python2.7/matplotlib/texmanager.py", line 259, in make_tex
     fh.write(s)
UnicodeEncodeError: 'ascii' codec can't encode character u'\u0119' in position 349: ordinal not in range(128)

And after adding:
mpl.rcParams['text.latex.preamble'].append(r'\usepackage{amsmath},\usepackage[utf8]{inputenc}')
I got:

['', '\\usepackage{amsmath},\\usepackage[utf8]{inputenc}']
Exception in Tkinter callback
Traceback (most recent call last):
   File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1437, in __call__
     return self.func(*args)
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 236, in resize
     self.show()
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 239, in draw
     FigureCanvasAgg.draw(self)
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py", line 421, in draw
     self.figure.draw(self.renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/usr/lib/pymodules/python2.7/matplotlib/figure.py", line 898, in draw
     func(*args)
   File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 1997, in draw
     a.draw(renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, in draw_wrapper
     draw(artist, renderer, *args, **kwargs)
   File "/usr/lib/pymodules/python2.7/matplotlib/axis.py", line 1042, in draw
     ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw, renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/axis.py", line 993, in _get_tick_bboxes
     extent = tick.label1.get_window_extent(renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/text.py", line 747, in get_window_extent
     bbox, info = self._get_layout(self._renderer)
   File "/usr/lib/pymodules/python2.7/matplotlib/text.py", line 309, in _get_layout
     ismath=ismath)
   File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py", line 188, in get_text_width_height_descent
     renderer=self)
   File "/usr/lib/pymodules/python2.7/matplotlib/texmanager.py", line 606, in get_text_width_height_descent
     dvifile = self.make_dvi(tex, fontsize)
   File "/usr/lib/pymodules/python2.7/matplotlib/texmanager.py", line 371, in make_dvi
     string:\n%s\nHere is the full report generated by LaTeX: \n\n'% repr(tex)) + report)
RuntimeError: LaTeX was not able to process the following string:
'0\.2'
Here is the full report generated by LaTeX:

This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian)
  restricted \write18 enabled.
entering extended mode
(./d9d8962c45871ca6b62e5d3dffbe49ab.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, po
lish, loaded.
(/usr/share/texlive/texmf-dist/tex/latex/base/article.cls
Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo))
(/usr/share/texlive/texmf-dist/tex/latex/type1cm/type1cm.sty)
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/helvet.sty
(/usr/share/texlive/texmf-dist/tex/latex/graphics/keyval.sty))
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/courier.sty)
(/usr/share/texlive/texmf-dist/tex/latex/base/textcomp.sty
(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.def))
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amstext.sty
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsgen.sty))
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsbsy.sty)
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsopn.sty))

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
  ...

l.9 \usepackage{amsmath},
                          \usepackage[utf8]{inputenc}
(/usr/share/texlive/texmf-dist/tex/latex/base/inputenc.sty
(/usr/share/texlive/texmf-dist/tex/latex/base/utf8.def
(/usr/share/texlive/texmf-dist/tex/latex/base/t1enc.dfu)
(/usr/share/texlive/texmf-dist/tex/latex/base/ot1enc.dfu)
(/usr/share/texlive/texmf-dist/tex/latex/base/omsenc.dfu)
(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.dfu)))
(/usr/share/texlive/texmf-dist/tex/latex/geometry/geometry.sty
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifpdf.sty)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifvtex.sty)
(/usr/share/texlive/texmf-dist/tex/generic/ifxetex/ifxetex.sty)

Package geometry Warning: Over-specification in `h'-direction.
     `width' (5058.9pt) is ignored.

Package geometry Warning: Over-specification in `v'-direction.
     `height' (5058.9pt) is ignored.

)
No file d9d8962c45871ca6b62e5d3dffbe49ab.aux.
(/usr/share/texlive/texmf-dist/tex/latex/base/ts1cmr.fd)
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/ot1pnc.fd)
*geometry* driver: auto-detecting
*geometry* detected driver: dvips
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/ot1phv.fd) [1]
(./d9d8962c45871ca6b62e5d3dffbe49ab.aux) )
(see the transcript file for additional information)
Output written on d9d8962c45871ca6b62e5d3dffbe49ab.dvi (1 page, 340 bytes).
Transcript written on d9d8962c45871ca6b62e5d3dffbe49ab.log.

And I really don't get what's happening :S

7

Thank you very much - hovewer, your solution isn’t enough. Adding your lines generate:

[‘\usepackage{amsmath}’, ‘\usepackage[T1]{fontenc}’]
Exception in Tkinter callback

Traceback (most recent call last):
File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call
return self.func(*args)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize

self.show()

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw
FigureCanvasAgg.draw(self)
File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw

self.figure.draw(self.renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw

func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw

a.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 571, in draw

self._fontproperties, angle)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 215, in draw_tex
Z = texmanager.get_grey(s, size, self.dpi)
File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 513, in get_grey

pngfile = self.make_png(tex, fontsize, dpi)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 442, in make_png
dvifile = self.make_dvi(tex, fontsize)
File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 371, in make_dvi

string:\n%s\nHere is the full report generated by LaTeX: \n\n'% repr(tex)) + report)

RuntimeError: LaTeX was not able to process the following string:
u’’
Here is the full report generated by LaTeX:

This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian)
restricted \write18 enabled.
entering extended mode
(./2c666a8feb5dd27d92f3c286e7775fb6.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, po

lish, loaded.
(/usr/share/texlive/texmf-dist/tex/latex/base/article.cls
Document Class: article 2007/10/19 v1.4h Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo))
(/usr/share/texlive/texmf-dist/tex/latex/type1cm/type1cm.sty)

(/usr/share/texlive/texmf-dist/tex/latex/psnfss/helvet.sty
(/usr/share/texlive/texmf-dist/tex/latex/graphics/keyval.sty))
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/courier.sty)
(/usr/share/texlive/texmf-dist/tex/latex/base/textcomp.sty

(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.def))
(/usr/share/texlive/texmf-dist/tex/latex/ucs/ucs.sty
(/usr/share/texlive/texmf-dist/tex/latex/ucs/data/uni-global.def))
(/usr/share/texlive/texmf-dist/tex/latex/base/inputenc.sty

(/usr/share/texlive/texmf-dist/tex/latex/ucs/utf8x.def))
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?’ option.
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amstext.sty

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsgen.sty))
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsbsy.sty)
(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsopn.sty))
(/usr/share/texlive/texmf-dist/tex/latex/base/fontenc.sty

(/usr/share/texlive/texmf-dist/tex/latex/base/t1enc.def))
(/usr/share/texlive/texmf-dist/tex/latex/geometry/geometry.sty
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifpdf.sty)
(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifvtex.sty)

(/usr/share/texlive/texmf-dist/tex/generic/ifxetex/ifxetex.sty)

Package geometry Warning: Over-specification in h'-direction. width’ (5058.9pt) is ignored.

Package geometry Warning: Over-specification in `v’-direction.

`height' (5058.9pt) is ignored.

) (./2c666a8feb5dd27d92f3c286e7775fb6.aux)
(/usr/share/texlive/texmf-dist/tex/latex/base/ts1cmr.fd)
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/t1pnc.fd)
(/usr/share/texlive/texmf-dist/tex/latex/ucs/ucsencs.def)

geometry driver: auto-detecting
geometry detected driver: dvips
(/usr/share/texlive/texmf-dist/tex/latex/psnfss/t1phv.fd)
(./2c666a8feb5dd27d92f3c286e7775fb6.aux) )
No pages of output.
Transcript written on 2c666a8feb5dd27d92f3c286e7775fb6.log.

And I still don’t have slightest idea what’s wrong with LaTeX in Matplotlib :S

···

2013/3/31 Juergen Hasch <python@…4224…>

I tested it under Linux now, and I see your problem. The latex files don’t compile cleanly, this is why you get the error. You can find the .tex files under ~./matplotlib/tex.cache

It looks like you have a problem with the font encoding when using unicode characters.

This works for me under Linux and Windows:

import numpy as np

import matplotlib as mpl

mpl.rcParams[‘text.latex.preamble’] = [r’\usepackage{amsmath}’ , r’\usepackage[T1]{fontenc}']

mpl.rcParams[‘text.latex.unicode’] = True

mpl.rcParams[‘text.usetex’] = True

import pylab as py

py.axhspan(8400,8730,alpha=0.15)

py.title(u’Wyniki eksperymentu pomiaru gęstości ciała stałego’,size=‘large’,family=‘serif’)

py.ylabel(r’\text{lol}',size=‘large’,family=‘serif’)

py.grid(True)

py.show()

Am 30.03.2013 22:15, schrieb Pawel Chojnacki:

2013/3/30 Juergen Hasch <python@…4224… mailto:python@...4224...>

Am 30.03.2013 16:29, schrieb Pawel Chojnacki:

 > Please pardon me, but what object is math.usetex attribute of? I can't find it in the documentation.

 >

 > [http://matplotlib.org/users/usetex.html](http://matplotlib.org/users/usetex.html) Mentions only text.usetex.

 >

 >



You need to set

         mpl.rcParams['text.usetex'] = True



For text you need unicode, for latex raw encoding.

To have text and latex in one line, use

         xlabel(u'Häallo '+r'$\varphi$'+ 'r')



Works for me, at least.

I’ve already tried that, and I got the response:

[‘’, ‘\usepackage{amsmath}’]

Exception in Tkinter callback

Traceback (most recent call last):

File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call

 return self.func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize

 self.show()

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw

 FigureCanvasAgg.draw(self)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw

 self.figure.draw(self.renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

 draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw

 func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

 draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw

 a.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

 draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 526, in draw

 bbox, info = self._get_layout(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout

 ismath=ismath)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 188, in get_text_width_height_descent

 renderer=self)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 606, in get_text_width_height_descent

 dvifile = self.make_dvi(tex, fontsize)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 351, in make_dvi

 texfile = self.make_tex(tex, fontsize)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 259, in make_tex

 fh.write(s)

UnicodeEncodeError: ‘ascii’ codec can’t encode character u’\u0119’ in position 349: ordinal not in range(128)

And after adding:

mpl.rcParams[‘text.latex.preamble’].append(r’\usepackage{amsmath},\usepackage[utf8]{inputenc}')

I got:

[‘’, ‘\usepackage{amsmath},\usepackage[utf8]{inputenc}’]

Exception in Tkinter callback

Traceback (most recent call last):

File “/usr/lib/python2.7/lib-tk/Tkinter.py”, line 1437, in call

 return self.func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 236, in resize

 self.show()

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py”, line 239, in draw

 FigureCanvasAgg.draw(self)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 421, in draw

 self.figure.draw(self.renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

 draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/figure.py”, line 898, in draw

 func(*args)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

 draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/axes.py”, line 1997, in draw

 a.draw(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/artist.py”, line 55, in draw_wrapper

 draw(artist, renderer, *args, **kwargs)

File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 1042, in draw

 ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw, renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/axis.py”, line 993, in _get_tick_bboxes

 extent = tick.label1.get_window_extent(renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 747, in get_window_extent

 bbox, info = self._get_layout(self._renderer)

File “/usr/lib/pymodules/python2.7/matplotlib/text.py”, line 309, in _get_layout

 ismath=ismath)

File “/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py”, line 188, in get_text_width_height_descent

 renderer=self)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 606, in get_text_width_height_descent

 dvifile = self.make_dvi(tex, fontsize)

File “/usr/lib/pymodules/python2.7/matplotlib/texmanager.py”, line 371, in make_dvi

 string:\n%s\nHere is the full report generated by LaTeX: \n\n'% repr(tex)) + report)

RuntimeError: LaTeX was not able to process the following string:

‘0.2’

Here is the full report generated by LaTeX:

This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian)

restricted \write18 enabled.

entering extended mode

(./d9d8962c45871ca6b62e5d3dffbe49ab.tex

LaTeX2e <2011/06/27>

Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, po

lish, loaded.

(/usr/share/texlive/texmf-dist/tex/latex/base/article.cls

Document Class: article 2007/10/19 v1.4h Standard LaTeX document class

(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo))

(/usr/share/texlive/texmf-dist/tex/latex/type1cm/type1cm.sty)

(/usr/share/texlive/texmf-dist/tex/latex/psnfss/helvet.sty

(/usr/share/texlive/texmf-dist/tex/latex/graphics/keyval.sty))

(/usr/share/texlive/texmf-dist/tex/latex/psnfss/courier.sty)

(/usr/share/texlive/texmf-dist/tex/latex/base/textcomp.sty

(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.def))

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsmath.sty

For additional information on amsmath, use the `?’ option.

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amstext.sty

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsgen.sty))

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsbsy.sty)

(/usr/share/texlive/texmf-dist/tex/latex/amsmath/amsopn.sty))

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.

Type H for immediate help.

…

l.9 \usepackage{amsmath},

                      \usepackage[utf8]{inputenc}

(/usr/share/texlive/texmf-dist/tex/latex/base/inputenc.sty

(/usr/share/texlive/texmf-dist/tex/latex/base/utf8.def

(/usr/share/texlive/texmf-dist/tex/latex/base/t1enc.dfu)

(/usr/share/texlive/texmf-dist/tex/latex/base/ot1enc.dfu)

(/usr/share/texlive/texmf-dist/tex/latex/base/omsenc.dfu)

(/usr/share/texlive/texmf-dist/tex/latex/base/ts1enc.dfu)))

(/usr/share/texlive/texmf-dist/tex/latex/geometry/geometry.sty

(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifpdf.sty)

(/usr/share/texlive/texmf-dist/tex/generic/oberdiek/ifvtex.sty)

(/usr/share/texlive/texmf-dist/tex/generic/ifxetex/ifxetex.sty)

Package geometry Warning: Over-specification in `h’-direction.

 `width' (5058.9pt) is ignored.

Package geometry Warning: Over-specification in `v’-direction.

 `height' (5058.9pt) is ignored.

)

No file d9d8962c45871ca6b62e5d3dffbe49ab.aux.

(/usr/share/texlive/texmf-dist/tex/latex/base/ts1cmr.fd)

(/usr/share/texlive/texmf-dist/tex/latex/psnfss/ot1pnc.fd)

geometry driver: auto-detecting

geometry detected driver: dvips

(/usr/share/texlive/texmf-dist/tex/latex/psnfss/ot1phv.fd) [1]

(./d9d8962c45871ca6b62e5d3dffbe49ab.aux) )

(see the transcript file for additional information)

Output written on d9d8962c45871ca6b62e5d3dffbe49ab.dvi (1 page, 340 bytes).

Transcript written on d9d8962c45871ca6b62e5d3dffbe49ab.log.

And I really don’t get what’s happening :S

8

Thank you very much - hovewer, your solution isn't enough. Adding your lines generate:

The problem is this:

RuntimeError: LaTeX was not able to process the following string:
u''
Here is the full report generated by LaTeX:

Latex doesn't like the empty string. This is caused by the '\n' in your title.
Can you replace your original line:
  py.title(u'Wyniki eksperymentu pomiaru gęstości ciała stałego\n',size='large',family='serif')
with the new one, as in the example I sent you:
  py.title(u'Wyniki eksperymentu pomiaru gęstości ciała stałego',size='large',family='serif')

···

Am 31.03.2013 08:50, schrieb Pawel Chojnacki:

9

Thank you, it works flawlessly now :slight_smile:

···

2013/3/31 Juergen Hasch <python@…4224…>

Am 31.03.2013 08:50, schrieb Pawel Chojnacki:

Thank you very much - hovewer, your solution isn’t enough. Adding your lines generate:

The problem is this:

RuntimeError: LaTeX was not able to process the following string:

u’’

Here is the full report generated by LaTeX:

Latex doesn’t like the empty string. This is caused by the ‘\n’ in your title.

Can you replace your original line:

    py.title(u'Wyniki eksperymentu pomiaru gęstości ciała stałego\n',size='large',family='serif')

with the new one, as in the example I sent you:

    py.title(u'Wyniki eksperymentu pomiaru gęstości ciała stałego',size='large',family='serif')