First of all, to use "\color" with TeX, you need to use "color"
package, i.e., you need to modify your latex preamble to include that
package. This can be done by
import matplotlib.pyplot as plt
plt.rcParams["text.latex.preamble"] = r"\usepackage{color}"
I guess the error you encounter is because of this (I'm not sure as
the error message is slightly different in my machine).
However, this WON'T work in general!
The color information in the dvi (or png) file is ignored in most
cases (the only exception I know is the ps backend which does not read
in dvi of png output).
So, if you only want ps output, you can use usetex with "\color" command.
In matplotlib, a single Text object only have a single color
associated. So changing the color of the text within the string is be
hardly possible (except in the ps backend). So, I guess your best
option is to call "text" (or "annotate") multiple times with different
colors with fine-tuned text positions.
FYI, It is possible to have two (or more) text instances of different
colors packed together (somewhat similar to this example
http://matplotlib.sourceforge.net/plot_directive/users/plotting/examples/anchored_box04.hires.png),
Regards,
-JJ
On Mon, Jan 11, 2010 at 11:13 AM, Gökhan Sever <gokhanse...@gmail.com> wrote:
> This seems like the solution. However when I try:
>
> I[1]: plt.plot(range(10))
> I[2]: plt.ylabel(r"{\color{red} a red text}")
>
> It doesn't function and produce an ugly set of error messages:
>
> I[3]: ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (573, 0))
>
> ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (573, 0))
>
> ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (573, 0))
>
> ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (573, 0))
>
> ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (566, 0))
>
> ---------------------------------------------------------------------------
> RuntimeError Traceback (most recent call last)
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/backends/backend_qt4.pyc
> in resizeEvent(self, event)
> 167 hinch = h/dpival
> 168 self.figure.set_size_inches( winch, hinch )
> --> 169 self.draw()
> 170 self.update()
> 171 QtGui.QWidget.resizeEvent(self, event)
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/backends/backend_qt4agg.pyc
> in draw(self)
> 128 if DEBUG: print "FigureCanvasQtAgg.draw", self
> 129 self.replot = True
> --> 130 FigureCanvasAgg.draw(self)
> 131 self.update()
> 132
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/backends/backend_agg.pyc
> in draw(self)
> 386
> 387 self.renderer = self.get_renderer()
> --> 388 self.figure.draw(self.renderer)
> 389
> 390 def get_renderer(self):
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/artist.pyc in
> draw_wrapper(artist, renderer, *kl)
> 53 def draw_wrapper(artist, renderer, *kl):
> 54 before(artist, renderer)
> ---> 55 draw(artist, renderer, *kl)
> 56 after(artist, renderer)
> 57
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/figure.pyc in
> draw(self, renderer)
> 800 dsu.sort(key=itemgetter(0))
> 801 for zorder, func, args in dsu:
> --> 802 func(*args)
> 803
> 804 renderer.close_group('figure')
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/artist.pyc in
> draw_wrapper(artist, renderer, *kl)
> 53 def draw_wrapper(artist, renderer, *kl):
> 54 before(artist, renderer)
> ---> 55 draw(artist, renderer, *kl)
> 56 after(artist, renderer)
> 57
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/axes.pyc in
> draw(self, renderer, inframe)
> 1755
> 1756 for zorder, a in dsu:
> -> 1757 a.draw(renderer)
> 1758
> 1759 renderer.close_group('axes')
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/artist.pyc in
> draw_wrapper(artist, renderer, *kl)
> 53 def draw_wrapper(artist, renderer, *kl):
> 54 before(artist, renderer)
> ---> 55 draw(artist, renderer, *kl)
> 56 after(artist, renderer)
> 57
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/axis.pyc in
> draw(self, renderer, *args, **kwargs)
> 819 self._update_label_position(ticklabelBoxes, ticklabelBoxes2)
> 820
> --> 821 self.label.draw(renderer)
> 822
> 823 self._update_offset_text_position(ticklabelBoxes,
> ticklabelBoxes2)
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/artist.pyc in
> draw_wrapper(artist, renderer, *kl)
> 53 def draw_wrapper(artist, renderer, *kl):
> 54 before(artist, renderer)
> ---> 55 draw(artist, renderer, *kl)
> 56 after(artist, renderer)
> 57
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/text.pyc in
> draw(self, renderer)
> 547 renderer.open_group('text', self.get_gid())
> 548
> --> 549 bbox, info = self._get_layout(renderer)
> 550 trans = self.get_transform()
> 551
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/text.pyc in
> _get_layout(self, renderer)
> 303 w, h, d = get_text_width_height_descent(clean_line,
> 304
> self._fontproperties,
> --> 305 ismath=ismath)
> 306 if baseline is None:
> 307 baseline = h - d
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/backends/backend_agg.pyc
> in get_text_width_height_descent(self, s, prop, ismath)
> 169 fontsize = prop.get_size_in_points()
> 170 w, h, d = texmanager.get_text_width_height_descent(s,
> fontsize,
> --> 171
> renderer=self)
> 172 return w, h, d
> 173
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/texmanager.pyc in
> get_text_width_height_descent(self, tex, fontsize, renderer)
> 599 else:
> 600 # use dviread. It sometimes returns a wrong descent.
>
> --> 601 dvifile = self.make_dvi(tex, fontsize)
> 602 dvi = dviread.Dvi(dvifile, 72*dpi_fraction)
> 603 page = iter(dvi).next()
>
> /home/gsever/Desktop/python-repo/matplotlib/lib/matplotlib/texmanager.pyc in
> make_dvi(self, tex, fontsize)
> 369 if exit_status or not exists:
> 370 raise RuntimeError(('LaTeX was not able to process
> the following \
> --> 371 string:\n%s\nHere is the full report generated by LaTeX: \n\n'%
> repr(tex)) + report)
> 372 else: mpl.verbose.report(report, 'debug')
> 373 for fname in glob.glob(basefile+'*'):
>
> RuntimeError: LaTeX was not able to process the following string:
> '{\\color{red} a red text}'
> Here is the full report generated by LaTeX:
>
> This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)
> %&-line parsing enabled.
> entering extended mode
> (./f5e3ddba2ab4bf5147d4e32e96deb043.tex
> LaTeX2e <2005/12/01>
> Babel <v3.8h> and hyphenation patterns for english, usenglishmax, dumylang,
> noh
> yphenation, arabic, basque, bulgarian, coptic, welsh, czech, slovak, german,
> ng
> erman, danish, esperanto, spanish, catalan, galician, estonian, farsi,
> finnish,
> french, greek, monogreek, ancientgreek, croatian, hungarian, interlingua,
> ibyc
> us, indonesian, icelandic, italian, latin, mongolian, dutch, norsk, polish,
> por
> tuguese, pinyin, romanian, russian, slovenian, uppersorbian, serbian,
> swedish,
> turkish, ukenglish, ukrainian, loaded.
> (/usr/share/texmf/tex/latex/base/article.cls
> Document Class: article 2005/09/16 v1.4f Standard LaTeX document class
> (/usr/share/texmf/tex/latex/base/size10.clo))
> (/usr/share/texmf/tex/latex/type1cm/type1cm.sty)
> (/usr/share/texmf/tex/latex/psnfss/helvet.sty
> (/usr/share/texmf/tex/latex/graphics/keyval.sty))
> (/usr/share/texmf/tex/latex/psnfss/courier.sty)
> (/usr/share/texmf/tex/latex/base/textcomp.sty
> (/usr/share/texmf/tex/latex/base/ts1enc.def))
> (/usr/share/texmf/tex/latex/geometry/geometry.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 f5e3ddba2ab4bf5147d4e32e96deb043.aux.
> (/usr/share/texmf/tex/latex/base/ts1cmr.fd)
> (/usr/share/texmf/tex/latex/psnfss/ot1pnc.fd)
> (/usr/share/texmf/tex/latex/psnfss/ot1phv.fd)
> ! Undefined control sequence.
> l.12 ...ze{12.000000}{15.000000}{\sffamily {\color
> {red} a red text}}
> [1] (./f5e3ddba2ab4bf5147d4e32e96deb043.aux) )
> (see the transcript file for additional information)
> Output written on f5e3ddba2ab4bf5147d4e32e96deb043.dvi (1 page, 224 bytes).
> Transcript written on f5e3ddba2ab4bf5147d4e32e96deb043.log.
>
>
> Interestingly tex_demo.py works fine and renders the text properly onto the
> figure.
>
>
> On Mon, Jan 11, 2010 at 4:36 AM, Damon McDougall <d.mcdoug...@warwick.ac.uk>
> wrote:
>>
>> Hi Gökhan,
>> Do you have usetex=True set? If so, have you tried the LaTeX command
>> sequence \color{red}{Red text goes here} ?
>> Regards,
>> -- Damon
>>
>> --------------------------
>> Damon McDougall
>> Mathematics Institute
>> University of Warwick
>> Coventry
>> CV4 7AL
>> d.mcdoug...@warwick.ac.uk
>> On 11 Jan 2010, at 05:48, Gökhan Sever wrote:
>>
>> Hello,
>>
>> Is there a way to color words differently in a label or title, for
>> example:
>>
>> ylabel("measurement 1 (in red color)" , "measurement 2 (in blue color)")
>> to match with the plotted line colors?
>>
>> Thanks.
>>
>> --
>> Gökhan
>>
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>
>
>
> --
> Gökhan
>
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