[vtkusers] Graph layout initialization?

[Eric E. Monson]

Okay, sorry for the noise. I had a problem with my vertex positioning, and after I kept playing with the strategy parameters for a while I was able to get the desired effect.

Thanks,
-Eric


On Jun 16, 2011, at 5:11 PM, Eric E. Monson wrote:

> Hey all,
> 
> Is there any way to do a graph layout where you give initial positions to the vertices rather than having the coordinates initially random, but then let the layout strategy handle things from there?
> 
> I'm trying to visualize some time-varying graphs where only a few new nodes and edges show up in each new time step. For speed of layout and visual continuity I'd like to do something like a Contstrained2DLayoutStrategy where nodes that have already been present in a previous time step have a greater impedance and are initially placed where they were at the end of the last layout.
> 
> It seems like any time you change the strategy or the layout input the points get re-randomized. Is there any way to assign coordinates, and then let the layout routine do it's thing from there?
> 
> Thanks,
> -Eric
> 
> · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
> Eric E Monson
> Duke Visualization Technology Group
> 
> 
> 
> 
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