contour plot of discontinous gradient, different interpolation functions to get smooth plot?


suppose I have a .vtu file containing a scalar FE-solution u using bilinear FE-functions. Hence, the solution is piecewise continuous across the cells and the gradient nabla_u is discontinous. Take attached vtu file for example.

data.vtu (17.5 KB)

I want to create a contour plot of gradient(u). Are there filters in paraview to use different interpolation / smoothing functions such that the contour plot gradient(u) is continuous?

Thank you!