2D interpolation of scattered data

x = [1 2 3 4 5];
y = [1 2 3 4 5];
z = [1 2 1 2 3; 3 4 3 4 5; 5 6 5 6 7; 3 4 3 4 5; 1 2 1 2 3];

Hi,

Is there a method to get the value of x as the output when the inputs are y = 2.5 and z = 4.5.

Where X is a 1*5 matrix, Y is a 1*5 matrix and Z is a 5*5 matrix as shown above.

Thanks in advance.

Answer 1

[KSSV]

x = [1 2 3 4 5];
y = [1 2 3 4 5];
z = [1 2 1 2 3; 3 4 3 4 5; 5 6 5 6 7; 3 4 3 4 5; 1 2 1 2 3];

[X,Y] = meshgrid(x,y) ;

idx = knnsearch([Y(:) z(:)],[2.5,4.5])

[Senal Perera]

Thank you so much man. You are the best. Since the issue is solved, I can continue with the rest of my project. Thanks again.