3d scattered data interpolation

[lionheart86]

Hi

How to interpolate 3D scattered data

Input is independent X,Y,Z array and Xi,Yi dependent variable, now want to compute Zi from interpolation function.

Sample dataset VI is attache for understanding....

[ML927]

Hi,

I am really bad at statistics so my question my seem silly, but what is the (mathematical ?) relation between Xi, Yi and Zi ? A bit more information would be helpful.

[GerdW]

Hi lionheart,

what about using Interpolate2DScattered?

[lionheart86]

Hi GredW

thanks for replay.

Interpolate2DScattered.vi takes to much time to execute. I will need to create grid as following picture and run time is about 40 minutes with for loop in parallelism mode ..

I need faster algorithm...

[GerdW]

Hi lionheart,

I need faster algorithm...

For a start I would use smaller arrays here! Do you really need to interpolate giant 2D arrays?

You should have noted in your first post you want to interpolate 2D arrays: just use a different polymorphic version of Interpolate2DScattered:

- did you notice what I have done with your two for loops generating Xi and Yi? I did this for a reason…

[lionheart86]

Hi GerdW

I was not aware of having 2D polymorphic instance of that VI. I have to decimate at least 50 value instead of 500

Yes I need that giant 2d array to interpolate. I will be having similar second dataset.which will be interpolated ,

For both dataset X,Y will be same and Z1-Z2 used for calculation..

[GerdW]

Hi lionheart,

I was not aware of having 2D polymorphic instance of that VI.

So you did not read the LabVIEW help for this function?

I have to decimate at least 50 value instead of 500

That's your decision.

More data means more processing time and more memory demands!

Yes I need that giant 2d array to interpolate. I will be having similar second dataset.which will be interpolated , For both dataset X,Y will be same and Z1-Z2 used for calculation..

You may use different methods to calculate interpolation coefficients - and you could use even better suited presumptions. See Christians group about interpolation…