Hi! I'm currently using Gmsh to get surface plots of real valued functions on a mesh on the unit square (z-value of surface is proportional to function value). Is it possible to tell Gmsh to show the difference between two such functions, so that I can easily see if they are equal by visually inspecting if the difference vanishes?
I'm using Gmsh 2.6.1 on Redhat Enterprise Linux 6.3. Best regards Torquil Sørensen
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