MATLAB: How to create a matrix to contain possible combinations of 2 sets of 1D parameters

repmat

Hi,
I'd like to apply a function to all combinations of possible input parameters.
I just have 2 input parameters which are both vectors, so I'd like to create a matrix which effectively 'pairs' up my parameters.
Here's my code:
d=@(x,y) min(abs(x-y),1-abs(x-y));
x = 0:0.01:0.95;
y = 0:0.01:0.95;
Thank you!
N

Best Answer

If you mean all possible permutations, do this:
x = 0:.5:2;
I = npermutek(x,2)  
I =
           0         0
           0    0.5000
           0    1.0000
           0    1.5000
           0    2.0000
      0.5000         0
      0.5000    0.5000
      0.5000    1.0000
      0.5000    1.5000
      0.5000    2.0000
      1.0000         0
      1.0000    0.5000
      1.0000    1.0000
      1.0000    1.5000
      1.0000    2.0000
      1.5000         0
      1.5000    0.5000
      1.5000    1.0000
      1.5000    1.5000
      1.5000    2.0000
      2.0000         0
      2.0000    0.5000
      2.0000    1.0000
      2.0000    1.5000
      2.0000    2.0000
npermutek is found on the FEX.
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