Asked by C Zeng
on 24 Jun 2012

Hello, all,

If we need to make different combinations, like the first three entries among {0,1,2} and the fourth entry is from {0,1,...,1000} how to make this matrix? There should be 3^3*1001 rows for that matrix.

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Answer by Walter Roberson
on 24 Jun 2012

See the "odometer" construction I describe in http://www.mathworks.com/matlabcentral/answers/29662-generate-points-sorted-by-distance

Answer by Andrei Bobrov
on 25 Jun 2012

one way

[k1,k2,k3,k4] = ndgrid(0:2,0:2,0:2,0:1000); out = [k1(:),k2(:),k3(:),k4(:)];

or

cmb = fullfact([3 3 3 1001]); % 'fullfact' from 'Statistics Toolbox' d = 0:1000; out = d(cmb);

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