MATLAB Function Reference

setdiff

Return the set difference of two vectors

Syntax

• c = setdiff(A,B)
  c = setdiff(A,B,'rows')
  [c,i] = setdiff(...)
  

Description

c = setdiff(A,B) returns the values in A that are not in B. The resulting vector is sorted is ascending order. In set theoretic terms, c = A - B. A and B can be cell arrays of strings.

c = setdiff(A,B,'rows') when A and B are matrices with the same number of columns returns the rows from A that are not in B.

[c,i] = setdiff(...) also returns an index vector index such that c = a(i) or c = a(i,:).

Examples

• A = magic(5);
  B = magic(4);
  [c,i] = setdiff(A(:),B(:));
  c' =    17    18    19    20    21    22    23    24    25
  i' =     1    10    14    18    19    23     2     6    15
  

See Also

intersect, ismember, issorted, setxor, union, unique

set (COM)

setfield