[vtkusers] Infovis: Changing layout strategy parameters

[Eric E. Monson]

Hey folks,

Why do the docs say "The strong recommendation is that you do not  
change this parameter" for things like initial temperature and cool  
down rate on layout strategies like Fast2D? For some of my graphs I  
don't even get close to a "final" layout with the default parameters  
(i.e. it takes a lot of rearranging from a random initial  
configuration to get to a nice layout, so I can get there eventually  
if I boost up both parameters quite a bit).

Instead of changing these parameters, is there a way to tell the  
layout strategy to give the graph another "kick" from the current  
state (rather than from the initial random layout) once it thinks the  
layout is complete?  ForceDirected has a setting for whether points  
should be initially random, but is there a way to tell the "density  
grid based" strategies to start with "jittered" versions of the  
current graph vertex positions rather than random?

Thanks,
-Eric

P.S.  Isn't the Cool Down Rate more like a decay time constant rather  
than a rate?