#13624: KeyError raised by GraphLatex.dot2tex_picture when edge_labels=True
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Reporter: slabbe | Owner: tbd
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.9
Component: packages: optional | Resolution:
Keywords: dot2tex, graph drawing | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Nicolas M. Thiéry | Merged in:
Dependencies: | Stopgaps:
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Comment (by slabbe):
Nicolas, could you add the following doctest to your patch to make sure
the issue do not come up again in the future?
{{{
We make sure :trac:`13624` is fixed::
sage: G = DiGraph()
sage: G.add_edge(3333, 88, 'my_label')
sage: G.set_latex_options(format='dot2tex')
sage: G.set_latex_options(edge_labels=True)
sage: G.latex_options().dot2tex_picture() # optional - dot2tex
graphviz
\begin{tikzpicture}
first_line?
...
last_line?
\end{tikzpicture}
}}}
I don't really know where to put the information about where and how to
download graphviz and dot2tex. In fact, there are many entry points for
the user:
- `G.set_latex_options`
- `G.latex_options`
- `G.latex_options().dot2tex_picture`
- `G.latex_options().set_option` <- it might be strange, but a lot of
doc is in here
- `G.latex_options().set_options`
- `G.latex_options().latex`
It is hard to know where the user will first have the idea that installing
graphviz + dot2tex could be nice. Personnaly, I found once that
information here :
- `G.layout_graphviz?`
Here is what it says :
{{{
This requires "graphviz" and the "dot2tex" spkg. Here are some
installation tips:
* Install graphviz >= 2.14 so that the programs dot, neato, ...
are in your path. The graphviz suite can be download from
http://graphviz.org.
* Download dot2tex-2.8.?.spkg from
http://trac.sagemath.org/sage_trac/ticket/7004 and install it
with "sage -i dot2tex-2.8.?.spkg"
}}}
This does not speak about any graphviz spkg. In fact, I did not know there
was one. When I saw that doc in the past, I was then able to install
graphviz properly.
The information about the dot2tex spgk is obsolete. I suggest to replace
it by :
{{{
* Get the name of the most recent version of dot2tex from
the sage command ``optional_packages()``. Then,
install it with ``sage -i dot2tex-2.8.?.spkg``.
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13624#comment:36>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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