Create Height field from 3D point cloud

[D60]

Hello,

There is a VI called: Create Height Field.vi to craete surface to 3D picture control.

"Converts a 2D array of values to a 3D height field and applies the height field to a 3D object that appears in a 3D scene."

This should be perfect for me ( this function interpolates the whole surface) but, I have 3D  [x,y,z] point cloud, where the coordinates are not equally spaced. As I understad this VI can display point cloud with equidistant coordinates. How can I use this tool to display my data?

I have tried the Create Mesh.vi to display my point cloud, but I really need the interpolated surface also. Could you give me some guide points where and how to do now?

Thanks in advance,

[BalazsNagy · Accepted solution]

Hi D60!

Sorry for the late reply.

Is your problem still unsolved?

If yes, I searched for some examples that use the Create Height Field VI.

I only found one example code on Community: https://decibel.ni.com/content/docs/DOC-4765

If your data points are not sampled on the same rate, you could use interpolation, to reach the same length.

I guess the easiest way is to use the Mathscript node for this, like in this eaxmple: http://zone.ni.com/reference/en-XX/help/371361F-01/lvtextmath/msfunc_interpolate/

Or this VI could be used for the same purpose: http://zone.ni.com/reference/en-XX/help/371361J-01/gmath/interpolate_2d/

Please let me know, if my suggestions helped. If you have any questions, please don't hesitate to post them.

Best Regards,

[D60]

Dear Balázs,

I will check your suggestion and write a feedback soon.

Thanks for your help!

[BalazsNagy]

Hi D60!

Were my suggestions useful? Could you solve the issue?

Do you have any other questions, relating to this topic?

Best Regards,

[D60]

Dear Balazs Nagy,

I was out of office and I totally forgot this issue, Sorry for that and thanks for the update.

Your suggestions about 2D interpolation seem OK and very useful.

Thank you so much and have a nice day!

[BalazsNagy]

Hi D60!

I'm happy, that you could solve this issue using my suggestions.

Thanks for the feedback! Have a nice day too!

Bes Regards,