unique - Class: categorical

Unique values in categorical array

Syntax

B = unique(A)
[B,I,J] = unique(A)
[B,I,J] = unique(A,'first')

Description

B = unique(A) returns a categorical array containing the unique elements of A, sorted by the order of A's levels.

[B,I,J] = unique(A) also returns index vectors I and J such that B = A(I) and A = B(J).

[B,I,J] = unique(A,'first') returns the vector I to index the first occurrence of each unique value in A. unique(A,'last'), the default, returns the vector I to index the last occurrence.

See Also

intersect, ismember, setdiff, setxor, union

union (categorical)

unstack (dataset)

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