#13624: KeyError raised by GraphLatex.dot2tex_picture when edge_labels=True
-------------------------------------+--------------------------------------
Reporter: slabbe | Owner: tbd
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.8
Component: optional packages | Resolution:
Keywords: dot2tex | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
-------------------------------------+--------------------------------------
Changes (by nthiery):
* status: new => needs_review
Old description:
> The following is ok :
>
> {{{
> sage: G = DiGraph()
> sage: G.add_edge(3333, 88, 'my_label')
> sage: G.set_latex_options(format='dot2tex')
> sage: view(G)
> }}}
>
> but with `edges_labels=True` a !KeyError is raised :
>
> {{{
> sage: G.set_latex_options(edge_labels=True)
> sage: view(G)
> ERROR Failed to process input
> Traceback (most recent call last):
> File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
> packages/dot2tex/dot2tex.py", line 2939, in main
> s = conv.convert(dotdata)
> File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
> packages/dot2tex/dot2tex.py", line 794, in convert
> return self.do_preview_preproc()
> File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
> packages/dot2tex/dot2tex.py", line 1167, in do_preview_preproc
> hp,dp,wt = pp.texdims[name]
> KeyError: '3333880'
> }}}
>
> The error is also raised by `dot2tex_picture` method:
>
> {{{
> sage: G = DiGraph()
> sage: G.add_edge(0, 1, 'p0')
> sage: G.latex_options().dot2tex_picture()
> '\n\\begin{tikzpicture}[>=latex,line join=bevel,]\n%%\n\\node (1) at
> (6bp,7bp) [draw,draw=none] {$1$};\n \\node (0) at (6bp,57bp)
> [draw,draw=none] {$0$};\n \\draw [black,->] (0) ..controls
> (6bp,44.053bp) and (6bp,33.103bp) .. (1);\n%\n\\end{tikzpicture}\n'
> .dot2tex_picture()
> sage: G.set_latex_options(edge_labels=True)
> sage: G.latex_options().dot2tex_picture()
> ERROR Failed to process input
> Traceback (most recent call last):
> File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
> packages/dot2tex/dot2tex.py", line 2939, in main
> s = conv.convert(dotdata)
> File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
> packages/dot2tex/dot2tex.py", line 794, in convert
> return self.do_preview_preproc()
> File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
> packages/dot2tex/dot2tex.py", line 1167, in do_preview_preproc
> hp,dp,wt = pp.texdims[name]
> KeyError: '010'
> ''
> }}}
New description:
The following is ok :
{{{
sage: G = DiGraph()
sage: G.add_edge(3333, 88, 'my_label')
sage: G.set_latex_options(format='dot2tex')
sage: view(G)
}}}
but with `edges_labels=True` a !KeyError is raised :
{{{
sage: G.set_latex_options(edge_labels=True)
sage: view(G)
ERROR Failed to process input
Traceback (most recent call last):
File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
packages/dot2tex/dot2tex.py", line 2939, in main
s = conv.convert(dotdata)
File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
packages/dot2tex/dot2tex.py", line 794, in convert
return self.do_preview_preproc()
File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
packages/dot2tex/dot2tex.py", line 1167, in do_preview_preproc
hp,dp,wt = pp.texdims[name]
KeyError: '3333880'
}}}
The error is also raised by `dot2tex_picture` method:
{{{
sage: G = DiGraph()
sage: G.add_edge(0, 1, 'p0')
sage: G.latex_options().dot2tex_picture()
'\n\\begin{tikzpicture}[>=latex,line join=bevel,]\n%%\n\\node (1) at
(6bp,7bp) [draw,draw=none] {$1$};\n \\node (0) at (6bp,57bp)
[draw,draw=none] {$0$};\n \\draw [black,->] (0) ..controls (6bp,44.053bp)
and (6bp,33.103bp) .. (1);\n%\n\\end{tikzpicture}\n'
.dot2tex_picture()
sage: G.set_latex_options(edge_labels=True)
sage: G.latex_options().dot2tex_picture()
ERROR Failed to process input
Traceback (most recent call last):
File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
packages/dot2tex/dot2tex.py", line 2939, in main
s = conv.convert(dotdata)
File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
packages/dot2tex/dot2tex.py", line 794, in convert
return self.do_preview_preproc()
File "/Users/slabbe/Applications/sage-5.2/local/lib/python2.7/site-
packages/dot2tex/dot2tex.py", line 1167, in do_preview_preproc
hp,dp,wt = pp.texdims[name]
KeyError: '010'
''
}}}
This is due to dot2tex currently not supporting '\verb' properly.
The attached patch works around this by replacing \verb by \text, and
stripping out tricky characters like ^ and _.
By the way, this patch also makes ``latex`` use ``\text`` natively instead
of ``\verb`` in the easy situations as this gives more readable latex
code. But maybe this should be moved to another ticket.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13624#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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