XYZ array to intensisty map

[altenbach]

Here's how to use the original points to create the STL file. Seems trivially simple.

(and please don't use a greedy loop to waste 100% of a CPU core doing nothing until stop is pressed, see also)

[M_Ricci]

Great Altenbach!
It works very well, thank you!

The last point: the process creates a closed surface (see image A), probably because in the last loops it creates triangulations (see image B and zoom B2).
Is it possible to try avoiding triangulation on this side, in order to open the surface?

[altenbach]

You can filter out any triangles that you don't want, of course. (In this case, you could filter any triangles where all three vertices have the same specific Z value.)

You posted in a pretty old version (2013). What is your actual LabVIEW version?

[altenbach · Accepted solution]

Assuming your LabVIEW version has the conditional output tunnel, here's all you need to do. Try it!

(slightly simpler logic is possible, but harder to read)

[M_Ricci]

Perfect, thank you Altenbach for your huge support!

Max

[altenbach]

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@altenbach wrote:

(slightly simpler logic is possible, but harder to read)

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One alternative (checking it at least one is different)...

[altenbach]

On a side note, this entire method only works for a planar arrangement in x and y, i.e. if there are no multiple planes (e.g. a sphere or a donut, etc.). A more general solutions for points in 3D would involve more code (see here).

[M_Ricci]

Dear Altenbach,

I have seen d-dimensional Delaunay is not available in Labview, is there a method to work with 3D points in multiplanes like a sphere or a donut?

[altenbach]

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@M_Ricci wrote:

Dear Altenbach,

I have seen d-dimensional Delaunay is not available in Labview, is there a method to work with 3D points in multiplanes like a sphere or a donut?

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I am sure there is. You can look at the 2D LabVIEW code for some ideas (it is just a VI with exposed code!), then expand it to higher dimensions. I have not tried. Good luck!

[alexderjuengere]

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@M_Ricci wrote:

Dear Altenbach,

I have seen d-dimensional Delaunay is not available in Labview, is there a method to work with 3D points in multiplanes like a sphere or a donut?

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it looks like there is a "hacky" 3d version...

https://forums.ni.com/t5/LabVIEW/Delaunay-triangulation-and-mesh-generation-in-3D/m-p/1307044#M53772...

at least,  VertArray from "create mesh.vi"  accepts XYZ choordinates