# Surface from ConvexHull.ByPoints **URL:** \ **Category:** Uncategorized\ **Created:** [August 25, 2021, 10:17am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510 "2021-08-25T10:17:41Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![oh\_ruki](https://avatars.discourse-cdn.com/v4/letter/o/ac8455/32.png) [@oh\_ruki](https://forum.dynamobim.com/u/oh_ruki)\ **Post date:** [August 25, 2021, 10:17am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/1 "2021-08-25T10:17:41Z")
Hello, I want to create each triangular surface from ConvecHull.ByPoints. That’s why I want to divide these lines into groups of triangles. Does anyone know how to do that? ![スクリーンショット 2021-08-25 191415](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/a/2/a2c496e5cf61e25f4b85cd2c2a4d3a4d7e2d9627.jpeg) ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [August 25, 2021, 11:04am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/2 "2021-08-25T11:04:37Z")
Hello, Do you have the MeshToolkit 3.0.0 package installed? ---
**Author:** ![oh\_ruki](https://avatars.discourse-cdn.com/v4/letter/o/ac8455/32.png) [@oh\_ruki](https://forum.dynamobim.com/u/oh_ruki)\ **Post date:** [August 25, 2021, 12:02pm UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/3 "2021-08-25T12:02:14Z")
Yes, it is installed. Which node should I use? ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [August 25, 2021, 12:16pm UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/4 "2021-08-25T12:16:39Z")
The node ConvexHull.ByPoints has a yellow color, which means it gives you an error. If you click on the icon above the node it will give the error What does it say? ---
**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\ **Post date:** [August 25, 2021, 12:26pm UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/5 "2021-08-25T12:26:36Z")
Maybe have a look here too > [@Points to surface at revit Dynamo](https://forum.dynamobim.com/t/points-to-surface-at-revit-dynamo/50497): > > I have many points I want to create topographic surface or any kind of surfaces in order to get the perimeter shape , but i don’t know how to do it using Dynamo Nodes I tried Nurbsurface.Bypoints But It doesn’t accept the points any solutions ?? ---
**Author:** ![oh\_ruki](https://avatars.discourse-cdn.com/v4/letter/o/ac8455/32.png) [@oh\_ruki](https://forum.dynamobim.com/u/oh_ruki)\ **Post date:** [August 25, 2021, 12:47pm UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/6 "2021-08-25T12:47:28Z")
This error is a work scope error. I don’t think there is any particular problem with the error. I’m using Dynamo in Civil 3D. I referred to the link above, but I don’t have a “Topography.ByPoints” node for Revit. ---
**Author:** ![oh\_ruki](https://avatars.discourse-cdn.com/v4/letter/o/ac8455/32.png) [@oh\_ruki](https://forum.dynamobim.com/u/oh_ruki)\ **Post date:** [August 27, 2021, 6:16am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/7 "2021-08-27T06:16:09Z")
Eventually I want to create a solid from this Convex Hull and calculate the volume. Is there any good way? ---
**Author:** ![oh\_ruki](https://avatars.discourse-cdn.com/v4/letter/o/ac8455/32.png) [@oh\_ruki](https://forum.dynamobim.com/u/oh_ruki)\ **Post date:** [August 27, 2021, 6:52am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/8 "2021-08-27T06:52:13Z")
I’m sorry, I was able to solve it myself. In this way. ![ConvexHull_Solid_2021-08-27_03-53-55](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/7/d77cfed68900d72e4806dc13930060f28293bd87.png) ![ConvexHull_Solid_2021-08-27_03-51-30](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/6/667c9ff4a85fcbd897fa8b665b746f4e5f87b8f2.png) ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [August 27, 2021, 6:59am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/9 "2021-08-27T06:59:44Z")
Great…what is the warning about ? now where its a soulution… ---
**Author:** ![oh\_ruki](https://avatars.discourse-cdn.com/v4/letter/o/ac8455/32.png) [@oh\_ruki](https://forum.dynamobim.com/u/oh_ruki)\ **Post date:** [August 27, 2021, 7:07am UTC](https://forum.dynamobim.com/t/surface-from-convexhull-bypoints/67510/10 "2021-08-27T07:07:35Z")
The error is Geometry Working Range. I thought it was an error that I didn’t have to worry about.