MATLAB: Extracting the values using [row,col]

Question

I have successfully found the row and col's in "x" , (a 61×61 double) where the x values in a line match with values in "x".

%rows and columns where the xvalues of the line are the values in x(contour lines)

[row,col] = find(ismembertol(x,xvalues));

Now, I want to use the subscripts/values in [row,col] to extract data for corresponding cells in any other double.

For example, here are five random locations/indexes in my [row,col].

5 31

20 34

61 47

45 59

23 61

I want to find the 5th row and 31st column in z and y.

20th row and 24th column in z and y… etc

Answer 1

In the special case that y and z are exactly the same size as x:

idx = find(ismembertol(x,xvalues)); 
corresponding_y = y(idx);
corresponding_z = z(idx);

In the case that they might not be the same size:

[row,col] = find(ismembertol(x,xvalues)); 
corresponding_y = y( sub2ind(size(y), row, col) );
corresponding_z = z( sub2ind(size(z), row, col) );