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Re: Bug report (IsaViz 3.0 alpha): No influence on graph layout

From: Emmanuel Pietriga <emmanuel.pietriga@inria.fr>
Date: Sat, 14 Apr 2007 09:53:28 +0200
Message-Id: <D3C416CC-AA15-4E4D-B2ED-D8FCB5D44AB4@inria.fr>
Cc: www-isaviz@w3.org
To: Christoph Lange <ch.lange@iu-bremen.de>

You can indeed influence the layout *to some extent*. In order to do  
that, you would have to add additional instructions to the temporary  
DOT file generated by IsaViz in class RDFLoader. However, I'm not  
sure you can influence the path taken by edges. I think you can  
influence the position of nodes, but the geometry of edges ? I'm not  
sure. You'd have to take a look at GraphViz's DOT documentation [1].

[1] http://www.graphviz.org/Documentation.php

Another solution would be to modify the graphical objects created by  
the SVG import module (you can change the geometry of all objects,  
including splines). What option constitutes the best solution (or is  
even feasible) highly depends on the kind of modifications you want  
to make to the edges and nodes. Could you be more specific about that?


On 13 avr. 07, at 16:48, Christoph Lange wrote:

> Dear IsaViz developers,
>   I'm using IsaViz Build 20061026, as retrieved from
> http://www.lri.fr/~pietriga/IsaViz/, and I would like to have an  
> influence on
> the graph layout generated by "suggest layout". I don't know much  
> about
> GraphViz, but I guess it should be possible to specify some additional
> arguments to "dot", or to modify the dot file created by IsaViz  
> before "dot"
> is called. In my graph, with several hundreds of nodes and edges,  
> it is
> extremely hard to trace edges or to distinguish different edges,  
> even if they
> are differently colored. Therefore, I'd like to influence the  
> layout of the
> edges somehow.
> Thanks in advance,
> Christoph
> -- 
> Christoph Lange, Jacobs Univ. Bremen, http://kwarc.info/clange,  
> ICQ# 51191833

Emmanuel Pietriga
INRIA Futurs - Projet In Situ    tel : +33 1 69 15 34 66
Bat 490, Université Paris-Sud    fax : +33 1 69 15 65 86
91405 ORSAY Cedex FRANCE     http://www.lri.fr/~pietriga
Received on Saturday, 14 April 2007 07:53:47 UTC

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