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Text File | 1994-10-08 | 765 b | 37 lines | [TEXT/RLAB] |
- //-------------------------------------------------------------------//
- // complement
-
- // Syntax: complement ( A , B )
-
- // Description:
-
- // The complement function returns a vector-set that contains the
- // complement of A in B. In plain English: the elements of B that are
- // not in A.
-
- // See Also: intersection, set, union
-
- //-------------------------------------------------------------------//
-
- complement = function ( A, B )
- {
- if (A.n == 0) { return [B]; }
-
- if (min (size (A)) != 1)
- {
- error ("complement: 1st arg must be a vector");
- }
-
- if (min (size (B)) != 1)
- {
- error ("complement: 2st arg must be a vector");
- }
-
- a = set (A); Comp = set (B);
- for (i in 1:a.n)
- {
- Comp = Comp[ find (a[i] != Comp) ];
- }
- return Comp
- };
-