matplotlib-users Mailing List for matplotlib

David Pine <dp...@ny...> writes:

> "name 'xpdf' is not defined"
>
> params = {'backend': 'Agg',
 ...
>           'ps.usedistiller' : xpdf,

Put xpdf in quotes: 'xpdf' not xpdf. In the matplotlibrc file you don't
need quotes there, but if you use Python to set parameters, you do.

-- 
Jouni K. Seppänen
http://www.iki.fi/jks

On Tue, Nov 23, 2010 at 9:37 AM, Gökhan Sever <gok...@gm...> wrote:
> As I have learnt from Michael Droettboom, you can simply use unicode
> characters with a supported font set:
> In my setup I prefer DejaVu-Sans. First install these fonts into your
> system, then edit your matplotlibrc

Thanks for the answer. But I think there must be an easier way without
the need to install anything. After all, the legend command is able to
create text using the markers.

Alejandro.

On Tue, Nov 23, 2010 at 8:15 PM, Nicolas Bigaouette
<nbi...@gm...> wrote:
> Why not just use latex?
> plt.text(0.05, 0.95, r"This is the square marker: $\Box$ Subscript: $_\Box$
> superscript: $^\Box$", fontsize=20)

It produces the following error:

Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1413, in __call__
    return self.func(*args)
  File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py",
line 212, in resize
    self.show()
  File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py",
line 215, in draw
    FigureCanvasAgg.draw(self)
  File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py",
line 314, in draw
    self.figure.draw(self.renderer)
  File "/usr/lib/pymodules/python2.6/matplotlib/artist.py", line 46,
in draw_wrapper
    draw(artist, renderer, *kl)
  File "/usr/lib/pymodules/python2.6/matplotlib/figure.py", line 773, in draw
    for a in self.axes: a.draw(renderer)
  File "/usr/lib/pymodules/python2.6/matplotlib/artist.py", line 46,
in draw_wrapper
    draw(artist, renderer, *kl)
  File "/usr/lib/pymodules/python2.6/matplotlib/axes.py", line 1735, in draw
    a.draw(renderer)
  File "/usr/lib/pymodules/python2.6/matplotlib/text.py", line 515, in draw
    bbox, info = self._get_layout(renderer)
  File "/usr/lib/pymodules/python2.6/matplotlib/text.py", line 279, in
_get_layout
    clean_line, self._fontproperties, ismath=ismath)
  File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_agg.py",
line 156, in get_text_width_height_descent
    self.mathtext_parser.parse(s, self.dpi, prop)
  File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line
2810, in parse
    box = self._parser.parse(s, font_output, fontsize, dpi)
  File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line
2259, in parse
    self._expression.parseString(s)
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
1048, in parseString
    loc, tokens = self._parse( instring, 0 )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
981, in _parseCache
    value = self._parseNoCache( instring, loc, doActions, callPreParse )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
924, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
2559, in parseImpl
    return self.expr._parse( instring, loc, doActions, callPreParse=False )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
981, in _parseCache
    value = self._parseNoCache( instring, loc, doActions, callPreParse )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
924, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
2307, in parseImpl
    loc, exprtokens = e._parse( instring, loc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
981, in _parseCache
    value = self._parseNoCache( instring, loc, doActions, callPreParse )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
924, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
2672, in parseImpl
    loc, tokens = self.expr._parse( instring, loc, doActions,
callPreParse=False )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
981, in _parseCache
    value = self._parseNoCache( instring, loc, doActions, callPreParse )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
924, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
2307, in parseImpl
    loc, exprtokens = e._parse( instring, loc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
981, in _parseCache
    value = self._parseNoCache( instring, loc, doActions, callPreParse )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
924, in _parseNoCache
    loc,tokens = self.parseImpl( instring, preloc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
2416, in parseImpl
    ret = e._parse( instring, loc, doActions )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
981, in _parseCache
    value = self._parseNoCache( instring, loc, doActions, callPreParse )
  File "/usr/lib/pymodules/python2.6/matplotlib/pyparsing.py", line
950, in _parseNoCache
    tokens = fn( instring, tokensStart, retTokens )
  File "/usr/lib/pymodules/python2.6/matplotlib/mathtext.py", line
1997, in raise_error
    raise ParseFatalException(msg + "\n" + s)
ParseFatalException: Expected end of math '$'
This is the square marker: $\Box$  Subscript (at char 0), (line:1, col:1)

Why not just use latex?
plt.text(0.05, 0.95, r"This is the square marker: $\Box$ Subscript: $_\Box$
superscript: $^\Box$", fontsize=20)