# Grasshopper - Interpolate curve through points

**URL:** <https://discourse.mcneel.com/t/grasshopper-interpolate-curve-through-points/223670>\
**Category:** Grasshopper\
**Tags:** mac\
**Created:** [October 16, 2026, 6:52pm UTC](https://discourse.mcneel.com/t/grasshopper-interpolate-curve-through-points/223670 "2026-10-16T18:52:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Julien\_01](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/julien_01/32/760104_2.png) [@Julien\_01](https://discourse.mcneel.com/u/Julien_01)\
**Post date:** [October 16, 2026, 6:52pm UTC](https://discourse.mcneel.com/t/grasshopper-interpolate-curve-through-points/223670/1 "2026-10-16T18:52:04Z")

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Hi everyone,

I’m having a hard time to interpolate a curve through points so I could achieve a sort of a “mandala” pattern tree as shown in the image that I’ve modelized by hand in Rhino.

Could someone help me on why the interpolated curve forms a loop?

Thanks,

 ![Capture d’écran, le 2026-10-14 à 08.28.47](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/a/5/a/a5aa2276c63174aa4c8335c0f0bc054a9272d2a6.jpeg)

[Spine\_20261014.gh](https://discourse.mcneel.com/uploads/short-url/tfHDGsWbnbqIv6ebNWROVsF8tAr.gh) (24.9 KB)

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<div class="post-metadata">

**Author:** ![Volker\_Rakow](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/volker_rakow/32/758767_2.png) [@Volker\_Rakow](https://discourse.mcneel.com/u/Volker_Rakow)\
**Post date:** [October 16, 2026, 8:42pm UTC](https://discourse.mcneel.com/t/grasshopper-interpolate-curve-through-points/223670/2 "2026-10-16T20:42:07Z")

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A quick fix, but it would be better if you did this correctly from the start:

 ![Screenshot 2026-10-16 224022](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/9/7/d/97d88abb409775556d34a5d97ed046de942ee2a9.png)  
[Spine\_20261014 VR 1.gh](https://discourse.mcneel.com/uploads/short-url/6xHAcuatwvqRGBq9UI6GyTovEAy.gh) (37.7 KB)