REVERSE

REVERSE (LET)

Let Subcommand

Reverse the order of the elements in a variable. That is, if Y has N elements, Y(1) = Y(N), Y(2)=Y(N-1), ... , Y(N)=Y(1).

LET <y2> = REVERSE <y1>             <SUBSET/EXCEPT/FOR qualification>
where <y1> is a response variable;
              <y2> is a variable where the reversed data is stored;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

LET Y2 = REVERSE Y
LET Y2 = REVERSE Y FOR I = 1 1 30

None

FLIP is a synonym for REVERSE.

SORT	= Sort the elements in a variable.
RANK	= Rank the elements in a variable.
SORT DIRECTION	= Specify whether sorting is done in a descending or ascending order.

Data Manipulation

1998/5

LET Y = NORMAL RANDOM NUMBERS FOR I = 1 1 100
LET Y2 = RANK Y
LET Y3 = REVERSE Y2