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See the recommended documentation of this function
union
extract union components of a vector
Calling Sequence
[v [,ka, kb] ] = union(a,b) [v [,ka, kb] ] = union(a,b,orient)
Arguments
- a
vector or matrix of numbers or strings
- b
vector of real numbers or strings
- orient
flag with possible values : 1 or "r", 2 or "c".
- v
row vector or matrix of 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(:)]
.
union(a,b,"r")
or
union(a,b,1)
returns the matrix formed by the union of
the unique rows of a
and b
sorted in
lexicographic ascending order. In this case matrices a
and b
must have the same number of columns.
union(a,b,"c")
or
union(a,b,2)
returns the matrix formed by the union of
the unique columns of a
and b
sorted
in lexicographic ascending order. In this case matrices
a
and b
must have the same number of
rows.
[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
See Also
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