Dear GMSH, Now I am trying to visualise some of the higher order elements, for example a 2nd order triangle. In particular, I am trying to understand how to interpolate a surface over a triangle given 6 points.
I am familiar with Lagrange interpolatory polinomials for interpolating lines, squares, and cubes. However, it is not obvious to me how this formalism is extended to interpolating a triangle. I would be grateful if somebody could explain this or direct me to a book/publication explaining this procedure. Regards, Aleksejs
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