# Surface gradient

**URL:** <https://community.freefem.org/t/surface-gradient/3589>\
**Category:** General Discussion\
**Created:** [November 20, 2024, 12:33pm UTC](https://community.freefem.org/t/surface-gradient/3589 "2024-11-20T12:33:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yongxing](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/yongxing/32/3632_2.png) [@yongxing](https://community.freefem.org/u/yongxing)\
**Post date:** [November 20, 2024, 12:33pm UTC](https://community.freefem.org/t/surface-gradient/3589/1 "2024-11-20T12:33:38Z")

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Is there an example about surface gradient and PDE? Thank you in advance!

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**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\
**Post date:** [November 20, 2024, 12:59pm UTC](https://community.freefem.org/t/surface-gradient/3589/2 "2024-11-20T12:59:25Z")

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See, e.g., [FreeFem-sources/examples/3dSurf/Laplace3dSP2.edp at master · FreeFem/FreeFem-sources · GitHub](https://github.com/FreeFem/FreeFem-sources/blob/master/examples/3dSurf/Laplace3dSP2.edp).