[Gmsh] Postprocessing Problem with point data?

Christophe Geuzaine cgeuzaine at ulg.ac.be
Wed Sep 24 14:31:38 CEST 2008

Bernhard Kubicek wrote:
> Hi there,
> attached there are two pos files, that when view at the same time, have 
> a postprocessing problem on my machine.
> if I start freshly, things are fine. however, as soon as I rotate, there 
> is nothing visible any more in the 3d window.
> Is it just me, or is this reproduceable?

Hello Bernhard - I don't think it's a bug: your second dataset has a 
huge z-coordinate range (approx [-1e5,1e6]) whereas the first one is in 

When you merge both datasets, Gmsh automatically sets the center of 
rotation at the center of the overall bounding box, i.e., around (0,0, 
(-1e5+1e6)/2), which is pretty far from the center of the bbox for the 
first dataset. Hence the weird behaviour.

Set the rotation center to (0,0,0) by hand in Tools->Options->General to 
see what I'm talking about.


Ruth & Dave & Christophe

> nice greetings,
> Bernhard
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science