[Gmsh] Interpolating mesh values
cgeuzaine at uliege.be
Tue Nov 28 16:39:58 CET 2017
> On 27 Nov 2017, at 23:41, Mayank Jog <mayankjog at gmail.com> wrote:
> I've started using gmsh recently, and I wonder if there is a functionality to interpolate data.
> I have a mesh, and a value associated with each element of the mesh (electric potential)*.
> I want to use this mesh to calculate the value of the electric potential on a uniform cartesian grid specified by points (= (x, y, z) ; known in millimeters; = same unit as in $nodes)
Plugin(Probe) for a single evaluation; or Plugin(CutGrid) and Plugin(CutBox) for multiple evaluations on regular grids.
Plugin(Probe).X = 0.3;
Plugin(Probe).Y = 0.3;
Plugin(Probe).Z = 0.3;
> I'm guessing some sort of interpolation is needed...how would I go about it?
> I tried using MATLAB functions to interpolate, but they all use triangulation techniques which work for convex volumes. My volume is non-convex (it has a U-shape)...how would I do the interpolation? Does gmsh have a function to interpolate?
> Thank you,
> *I have the original mesh (containing $nodes, $elements, and $elementdata) in .msh format.
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
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