union - extract union components of a vector

Calling Sequence

[v, [ka,kb]]=union(a,b)

Parameters

• a : vector of real numbers or strings
• b : vector of real numbers or strings
• v : row vector of real numbers or strings
• ka : row vector of integers
• kb : row vector of integers

Description

union(a,b) returns a sorted row vector which retains the unique entries of [a(:);b(:)].

[v,ka,kb]=union(a,b) also returns index vectors ka and kb such that v is a sorted combination of the entries a(ka) and b(kb).

Examples

A=round(5*rand(10,1));
B=round(5*rand(7,1));

union(A,B)
[N,ka,kb]=union(A,B)

union('a'+string(A),'b'+string(B))

 

See Also

unique  sort