Generate an equation from x,y and z data in a table/surface plot

Hi,

I wonder if there is any approach to generate a function for values on z based on x and y values, e.g. a X of 1 and a y of 4 corresponds to a z of 10. I know that this will depend on the behaviour of the function but is there a general approach to perform this in Matlab.

How I create the surface plot is according below:

z=Data(2:end,2:end)
z=table2array(z)

x=1:size(z,2)
y=1:size(z,1)

figure(1)
surf(x,y,z)

Thanks in advance.

Kind regards..

[Akira Agata]

If you don't need to fit a specific function, you can simply use 2D interpolation, like interp2.

[KSSV]

Attach your data.

[Vlatko Milic]

Please see the attached file

[Vlatko Milic]

@Akira Agata, I attach the file here. I tried with interp2 but could not make it work. I just want to specify the function for the data