
Select from Tuplet using logical expression
Posted:
Mar 1, 2011 5:27 AM


Hello.
Skip if needed: ///I am working on a part combinatorical problem with sets of 3 differently indexed values (e.g. F_i, F_j, F_k, F denoting frequency channels) which are subsets of many values (e.g 16 different frequency channels, denoted F_0, F_1 ... F_15).
Now, I need to select triplets from these channels, I used Tuplets. So far so good. From these I need those combinations where indexes i!=k and/or j!=k, and i=j is allowed (e.g {i,j,k} = {12, 12, 4} is a valid channel combination, but {3, 12, 3} is not).///
So basically I need to generate triplets from a range of integer numbers, where the first and second elements of these triplets do not match the third. I thought Select would help, but I don't know if there exists an option to control elements' values in a condition.
>From then on I must use these triplets' elements in a function.
But first I am asking your help in generating thos triplets of numbers.
Thanks.
Tamás Lengyel

