#13624: KeyError raised by GraphLatex.dot2tex_picture when edge_labels=True
------------------------------------------+---------------------------------
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:
------------------------------------------+---------------------------------
Changes (by ncohen):
* status: needs_review => needs_work
Comment:
> grep is your friend :-)
Cool.
> See the method layout_graphviz in generic_graph.
Do we both agree that this is nowhere sufficient ?
Here is what happens when some code that requires graphviz (and which does
not use layout_graphviz) is executed wihout graphviz installed
{{{
sage: sage: import dot2tex
# optional - dot2tex graphviz ## line 10 ##
sage: sage: output = dot2tex.dot2tex(graph, format="positions",
prog="neato") # optional - dot2tex graphviz ## line 11 ##
ERROR Could not locate Graphviz binaries
ERROR Failed to create xdotdata. Is Graphviz installed?
ERROR Failed to parse the input data. Is it a valid dot file?
Try to input xdot data directly. Example:
dot -Txdot file.dot | dot2tex > file.tex
If this does not work, check that you have an updated version of PyParsing
and
Graphviz. Users have reported problems with old versions. You can also run
dot2tex in debug mode using the --debug option:
dot2tex --debug file.dot
A file dot2tex.log will be written to the current directory with detailed
information useful for debugging.
An exception has occurred, use %tb to see the full traceback.
SystemExit: 1
To exit: use 'exit', 'quit', or Ctrl-D
}}}
The error message should redirect the user toward a way to install
graphviz I guess. And I have never met "`SystemExit`"
By the way, do we really need pyparsing ? I thought this did not belong to
Sage, and I needed it a couple of days ago.
I reset this ticket to `needs_work` because the doctests from two messages
above still do not pass, even with graphviz installed.
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13624#comment:27>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.
