Dear Alan,
Thanks for your quick response. That cleared things up
perfectly with the Greek letters. I guess it just goes
to show my ignorance of Python. :)
Unfortunately, I wasn't able to use the same trick for
including a fraction as a title. Using the code:
from pyx import *
from pyx.graph import axis
g = graph.graphxy(width=8,
x=axis.linear(min=1, max=10, title=r"$\tau$"),
y=axis.linear(title=r"$\frac{1}{2}$"))
g.plot(graph.data.function("y(x)=sqrt(0.5*x)/(sqrt(0.5*x)+x)",points=500))
g.finish()
g.writeEPSfile("derivatives_opt_2")
I get the error:
bsd% python derivatives_opt_2.py
Traceback (most recent call last):
File "derivatives_opt_2.py", line 11, in <module>
g.finish()
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/graph.py",
line 268, in finish
self.doaxes()
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/graph.py",
line 491, in doaxes
self.dolayout()
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/graph.py",
line 475, in dolayout
self.doaxiscreate(axisname)
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/graph.py",
line 216, in doaxiscreate
self.axes[axisname].create()
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/axis/axis.py",
line 565, in create
self.canvas = self.axis.create(self.data,
self.positioner, self.graphtexrunner, self.errorname)
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/axis/axis.py",
line 228, in create
return _regularaxis._create(self, data,
positioner, graphtexrunner, self.parter, self.rater,
errorname)
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/axis/axis.py",
line 198, in _create
variants[0].storedcanvas = layout(variants[0])
File
"/usr/local/lib/python2.5/site-packages/pyx/graph/axis/axis.py",
line 133, in layout
self.painter.paint(canvas, data, self, positioner)
return self.insert(self.texrunner.text_pt(x, y,
atext, *args))
File
"/usr/local/lib/python2.5/site-packages/pyx/text.py",
line 1222, in text_pt
return self.text(x * unit.t_pt, y * unit.t_pt,
expr, *args, **kwargs)
File
"/usr/local/lib/python2.5/site-packages/pyx/text.py",
line 1199, in text
self.execute(expr,
self.defaulttexmessagesdefaultrun +
self.texmessagesdefaultrun + texmessages)
File
"/usr/local/lib/python2.5/site-packages/pyx/text.py",
line 1036, in execute
raise TexResultError("unhandled TeX response
(might be an error)", self)
pyx.text.TexResultError: unhandled TeX response (might
be an error)
The expression passed to TeX was:
\ProcessPyXBox{\setbox0\hbox{$\vcenter{\vrule
width0pt}$}\PyXDimenVShift=\ht0\setbox0\hbox{{\gdef\PyXBoxHAlign{0.50000}\gdef\PyXFlushHAlign{0.50000}\PyXragged{}$\frac{1}{2}$}}\lower\PyXDimenVShift\box0%
}{8}%
\PyXInput{12}%
After parsing the return message from TeX, the
following was left:
*
*! Undefined control sequence.
<recently read> \frac
<argument> ...HAlign {0.50000}\PyXragged {}$\frac
(cut after 5 lines, increase errordebug for more
output)
Is there any possible fix to use a fraction in my
title, or do I need to seek an alternative formatting
option?
Thanks again,
-Daniel
-----------------
Message: 6
Date: Thu, 17 Jul 2008 19:00:13 -0400
From: Alan G Isaac <[EMAIL PROTECTED]>
Subject: Re: [PyX-user] LaTeX Labels
To: [email protected]
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
On Thu, 17 Jul 2008, Dan Reinholz apparently wrote:
> title="$\tau$"
Use raw strings:
http://docs.python.org/tut/node5.html#SECTION005120000000000000000
Cheers,
Alan Isaac
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