CLUSTINDS

Find object indices in cluster

    [IND,FIRST,LAST,LABC] = CLUSTINDS(LAB)

Input
LAB	Column vector with N cluster labels. In total C clusters

Output
IND	Column vector with N indices ranging from 1 to N.
FIRST	Column vector with C start points in IND of a cluster.
LAST	Column vector with C end points in IND of a cluster
LAST(I)	= FIRST(I+1)-1, LAST(END) = N.
LABC	Column vector with the C cluster labels.

Description

In case cluster labels in LAB are not sorted this routine is useful to  group them. Cluster K can be found by LAB(IND(FIRST(K):LAST(K))). Its  original label in LAB is LABC(K).