#252 ugly pydot generated UML diagrams

[Willi Richert]

Please see the attached file: The text sticks out of the UML boxes. As the rest of my pydot generated stuff looks nice I suppose it is something with epydoc styles.

[Willi Richert]

pydot generated UML diagram with bad font size

[Edward Loper]

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what version of graphviz are you using? Note that epydoc uses the graphviz html-like codes to construct those graphs; and those codes may not be fully supported in older versions of graphviz.

[Willi Richert]

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graphviz 2.12-4ubuntu3
libgraphviz3 2.12-4ubuntu3
python-pydot 0.9.10-1

[Edward Loper]

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Hm, that's fairly up-to-date. You can look at the digraph file that epydoc generates, and see if anything looks wrong. To do that, you'll need to add some code to epydoc/docwriter/dotrgraph.html. The easiest thing is probably to modify the write() method (on around line 230) by adding the following three lines to the top of the method:

out = open(filename+'.dot', 'w')
out.write(self.to_dotfile()
out.close()

Then run epydoc, and check for "*.dot" files in the output directory.

In the meantime, I'll look through the graphviz bug list [1] to see if anything looks relevant. (Note that pydot shouldn't be involved, since epydoc calls the graphviz 'dot' executable directly.)

[1] http://www.graphviz.org/bugs/openbugs.html

[Edward Loper]

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I notice that the font on your example .gif looks different from the fonts on the graphs that I generate. E.g., compare to [1]. So perhaps there's some font problem at work here? By default, epydoc uses 10 point Helvetica; but you could try specifying a different font or size with the --graph-font and --graph-size options to epydoc, and see if that fixes the problem.

[1] http://epydoc.sourceforge.net/api/epydoc.apidoc.APIDoc-class.html

[Willi Richert]

image from epydoc.docwriter.dotgraph-module.html generated on my machine

[Willi Richert]

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File Added: import_graph.gif

[Edward Loper]

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Have you had a chance to test whether using a different font (via --graph-font and --graph-font-size options) fixes the problem?

[Gabriel Rossetti]

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I have exactly the same thing using the same versions. I had updated epydoc thinking maybe the beta version (version in ubuntu 7.10) did that, but the current has the same output. Using the following options :

--graph-font-size 10 --graph-font courier

worked for me, but the not the following fonts: helvetica, times.

Gabriel