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

**URL:** https://discourse.paraview.org/t/contour-plot-of-discontinous-gradient-different-interpolation-functions-to-get-smooth-plot/14502
**Category:** ParaView Support
**Created:** [April 27, 2024, 9:22am UTC](https://discourse.paraview.org/t/contour-plot-of-discontinous-gradient-different-interpolation-functions-to-get-smooth-plot/14502 "2024-04-27T09:22:07Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![simonw](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/s/34f0e0/32.png) [@simonw](https://discourse.paraview.org/u/simonw)
#### Post date: [April 27, 2024, 9:22am UTC](https://discourse.paraview.org/t/contour-plot-of-discontinous-gradient-different-interpolation-functions-to-get-smooth-plot/14502/1 "2024-04-27T09:22:08Z")

</div>

Hello,

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](https://discourse.paraview.org/uploads/short-url/5kIdL827TsKVqzOKfzR5UyA7ixv.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!