[FIXED] Don't understand node positions

[cmagnien]

I'm trying to open a graph with my predefined layout, by using node positions in the gexf file.
I'm testing this with three nodes only, my graph is:

Code: Select all

<gexf xmlns:viz="http:///www.gexf.net/1.1draft/viz" version="1.1" xmlns="http://www.gexf.net/1.1draft">
<graph defaultedgetype="directed" idtype="string" type="static">
<nodes count="3">
<node id="1" label="1">
  <viz:position x="0.0" y="30.0" z="0.0"/>
</node>
<node id="2" label="2">
  <viz:position x="0.0" y="20.0" z="0.0"/>
</node>
<node id="3" label="3">
  <viz:position x="0.0" y="10.0" z="0.0"/>
</node>
</nodes>
</graph>
</gexf>

So the (x,y) positions of the nodes are (0,30), (0,20), (0,10), and therefore the three nodes should be aligned.
When I open this graph they are not.

Does the viz:position attribute not represent the position of the nodes, or is there some kind of auto-layout happening when a graph is opened?
I feel I'm missing something, but I can't find what.

[admin]

Hi,

Thanks for the feedback It seems to be a bug. Mathieu?

[mbastian]

Yes seems a bug when using 0.0 position. The zero is ignored and the default random value is used then. I reported a bug.

A workaround is to set '0.1' to X for instance. The Auto-scale option could also cause issues. It could be safer to disable it in the report panel before validating.