setdiff

returns components of a vector which do not belong to another one

Calling Sequence

v=setdiff(a,b)
[v,ka]=setdiff(a,b)

Arguments

:a vector of real numbers or strings : :b vector of real numbers or strings : :v vector of real numbers or strings with same orientation than a : :ka row vector of integers, ka(i) is the location of v(i) in a :

Description

setdiff(a,b) returns a sorted vector which retains the a entries which are not in b

[v,ka]=setdiff(a,b) returns a sorted vector which retains the a entries which are not in b and the location of these entries in a.

Examples

a = [223;111;2;4;2;2];
b = [2;3;21;223;123;22];
setdiff(a,b)
[v,k]=setdiff(`string`_(a),`string`_(b))

See Also

• unique extract unique components of a vector or matrices
• gsort sorting by quick sort agorithm
• union extract union components of a vector