Type of elements in the Vtk file for 2D
I'm Asma DJERMOUNE a master Student. I study in mathematics, modelling and simulation at the University of Pau and pays de l’Adour. Currently I'm working on a project of high order visualisation, with Mr Matthieu Heafele, using GMSH. I unfortunately faced a problem while using it. Indeed, gmsh can introduce problems while generating a 3rd order mesh. To clarify more, the output file .vtk does not contain the elements with the right order. For a triangular discretization, the .vtk file contains simple elements (type 5 for triangles and 3 for lines) while it must contain elements of high order such as triangular Lagrangian finite elements (type 69 for triangles and 68 for curves), to allow visualization in high order. To solve this problem, it is possible to modify the 'MTriangle.h' and 'Mline.h' files in the GMSH source.