# Neumann boundary condition in 1D example

**URL:** <https://community.freefem.org/t/neumann-boundary-condition-in-1d-example/3137>\
**Category:** General Discussion\
**Created:** [April 22, 2024, 2:25pm UTC](https://community.freefem.org/t/neumann-boundary-condition-in-1d-example/3137 "2024-04-22T14:25:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MBK](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@MBK](https://community.freefem.org/u/MBK)\
**Post date:** [April 22, 2024, 2:25pm UTC](https://community.freefem.org/t/neumann-boundary-condition-in-1d-example/3137/1 "2024-04-22T14:25:02Z")

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Hi,

how do I set a Neumann boundary condition in a 1D example in varf?  
With int0d?

Greetings!

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**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [April 25, 2024, 3:55pm UTC](https://community.freefem.org/t/neumann-boundary-condition-in-1d-example/3137/2 "2024-04-25T15:55:54Z")

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See exemple [FreeFem-sources/examples/3dCurve/tutomesh1d.edp at master · FreeFem/FreeFem-sources · GitHub](https://github.com/FreeFem/FreeFem-sources/blob/master/examples/3dCurve/tutomesh1d.edp)

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**Author:** ![MBK](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@MBK](https://community.freefem.org/u/MBK)\
**Post date:** [October 17, 2025, 9:57pm UTC](https://community.freefem.org/t/neumann-boundary-condition-in-1d-example/3137/4 "2025-10-17T21:57:11Z")

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> [@frederichecht](#):
>
> See exemple [FreeFem-sources/examples/3dCurve/tutomesh1d.edp at master · FreeFem/FreeFem-sources · GitHub](https://github.com/FreeFem/FreeFem-sources/blob/master/examples/3dCurve/tutomesh1d.edp)

Ok. Thank you

Greetings