'Combntns' function (Where was every element in the previous matrix ?)

Hi, folks. I have a problem with 'combntns' function.

I have a matrix with values of a function z=z(x,y). Well, I built a matrix with all combinations of values of z=z(x,y) but i want to have the information about x,y values for every z value. What place occupied the elements in the previous matrix? Where was every element in the previous matrix ? How can I know that?

I hope I have explained well

Regards

Answer 1

[Mischa Kim]

Ruymán, I think I understand what you are looking for, even though I don't know how this relates to your issue with combntns. You are probably looking for the find command. As an example:

 z    = 0.1:0.1:10;       % your original data array
 newz = reshape(z,10,10); % your transformed data

 my_z = 5.5;              
 indz = find(newz==my_z)  % index of value my_z in the original array

Does that help?

[Ruymán]

Very thanks for your interest, Mischa. I will try. I haven't explained well but I think 'find', perhaps, can help me. Regards