unique - extract unique components of a vector

Calling Sequence

[N, [k]]=unique(M)

Parameters

• M : vector of real numbers or strings
• N : vector of real numbers or strings
• k : vector of integers

Description

unique(M) returns a vector which retains the unique entries of M in ascending order.

If required the output argument k contains the position of the first encountered unique entries.

Examples

M=round(2*rand(20,1));

unique(M)
[N,k]=unique(M)

unique(string(M))
[N,k]=unique(string(M))

 

See Also

union  sort  lex_sort