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IDProjectCategoryView StatusDate SubmittedLast Update
0002010graphvizDotpublic2010-12-27 01:022011-04-28 04:03
ReporterRafael Chaves3 
Assigned Tonorth 
PlatformOSx86-Windows-7/XPOS Version
Summary0002010: arrowhead/arrowtail ignored for non directed graphs

I use Graphviz to generate UML class diagrams. It seems starting with the aforementioned release, arrows won't be drawn in non-directed graphs.

For instance, this used to generate two nodes with an arrow from B to A:

graph bug {B -- A [ arrowhead = opennone ] }

I did not test whether the problem occurs on other (non-Windows) platforms.

I know the Graphviz support in the Google Chart API works as I expected:{B%20--%20A%20[%20arrowhead%20=%20opennone%20]%20} [^]
Steps To Reproduce

graph bug {B -- A [ arrowhead = opennone ] }
Additional Information

The old behavior was a bug, according to the documentation.
Please see [^]
The drawing of arrowheads must be enabled by "dir".
It sounds as if you want to generate a directed graph as the
interpretation of "tail" and "head" in an undirected graph is
somewhat arbitrary. This should be fairly easy to correct.

Also I see there were or are font rendering problems in Windows
(the letter "B" is cut off in your example); I hope we have cleared those up
before the next major release.

Yes. I'm sorry about our previous error.
I'm glad you were able to devise the workaround.
I wasn't sure if you were generating your own
graph specifications.

Yes, I develop TextUML Toolkit, a tool for UML modeling that uses a
textual notation (and supports graphical visualization as well, using
Graphviz): [^]

I am working on a similar tool available via Web (which uses support
for Graphviz in the Google Charts API): [^]

which was generated for: [^]

TagsNo tags attached.
STATUS-COMMENTFixed (27 Dec 2010)
VERSION     2.26.3
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- Issue History
Date Modified Username Field Change
2011-04-28 04:03 user1 New Issue
2011-04-28 04:03 user1 Assigned To => Stephen North

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