File: unique.man

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.TH unique 1 "April 1999" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
unique - extract unique components of a vector
.SH CALLING SEQUENCE
.nf
[N, [k]]=unique(M)

.fi
.SH PARAMETERS
.TP
M 
: vector of real numbers or strings
.TP
N
: vector of real numbers or strings
.TP
k
: vector  of integers
.SH DESCRIPTION
\fVunique(M)\fR returns a vector which retains the unique entries of  \fVM\fR
in ascending order. 
.LP
If required the output argument \fVk\fR contains the position of the
first encountered unique entries.

.SH EXAMPLE
.nf
M=round(2*rand(20,1));

unique(M)
[N,k]=unique(M)

unique(string(M))
[N,k]=unique(string(M))

.fi
.SH SEE ALSO
union, sort, lex_sort