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Octave has a limited set of functions for managing sets of data, where a set is defined as a collection unique elements.
Return a row vector containing the unique values in x, sorted in ascending order. For example,
create_set ([ 1, 2; 3, 4; 4, 2 ]) => [ 1, 2, 3, 4 ]See also: union, intersection, complement.
Return a matrix the same shape as A which has 1 if
A(i,j)
is in S or 0 if it isn't.See also: unique, union, intersection, setxor, setdiff.
Return the unique elements of x, sorted in ascending order. If x is a row vector, return a row vector, but if x is a column vector or a matrix return a column vector. — Function File: unique (A, 'rows')
Return the unique rows of A, sorted in ascending order. — Function File: [y, i, j] = unique (x)
Return index vectors i and j such that
x(i)==y
andy(j)==x
.See also: union, intersect, setdiff, setxor, ismember.
Return the set of elements that are in either of the sets x and y. For example,
union ([ 1, 2, 4 ], [ 2, 3, 5 ]) => [ 1, 2, 3, 4, 5 ]See also: create_set, intersection, complement.
Return the elements in both a and b, sorted in ascending order. If a and b are both column vectors return a column vector, otherwise return a row vector.
Return index vectors ia and ib such that
a(ia)==c
andb(ib)==c
.
See also: unique, union, setxor, setdiff, ismember.
Return the elements of set y that are not in set x. For example,
complement ([ 1, 2, 3 ], [ 2, 3, 5 ]) => 5See also: create_set, union, intersection.
Return the elements in a that are not in b, sorted in ascending order. If a and b are both column vectors return a column vector, otherwise return a row vector.
Given the optional third argument `"rows"', return the rows in a that are not in b, sorted in ascending order by rows.
See also: unique, union, intersect, setxor, ismember.