[Gmsh] holes and layers

[Christophe Geuzaine]

Jin Chen wrote:
> Hi,
> 
> I am starting to learn Gmsh. Can anyone explain to me what they are and
> how to use them ?
> 

- "Holes" stands for "holes in a surface or a volume". See e.g.
tutorial/t4.geo for the definition of a surface with a hole in it, or
tutorial/t5.geo for the definition of a volume with holes (cavities).

- "Layers" is only used in conjunction with the "Extrude" command, and
specifies how many layers of elements you want to generate during the
extrusion. See e.g. tutorial/t3.geo.

Christophe

-- 
Christophe A. Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org