[Gmsh] Retrieving point IDs from extrude

[Andreas Puettmann]

Hi everyone,

I want to mesh a cylinder (which I create by extrusion) with changing 
size elements. At one end I want to have smaller elements than at the 
other end. This is actually just the same problem as described here:
http://www.geuz.org/pipermail/gmsh/2010/005752.html

I know I can control the element size by adjusting the characteristic 
length:

Characteristic Length { expression-list } = expression;

But the question is: How can I obtain the numbers of points which were newly created by the extrude command? I.e. how should I specify expression-list?

As far as I understand, the extrude command only returns the IDs of the generated volume and surfaces. But I need points to specify characteristic lengths...

Any help is greatly appreciated.

Cheers
Andreas


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