| Functions and CALL Routines |
Returns a character value that represents the results of choosing
from a list of arguments.
|
CHOOSEC (index-expression, selection-1
<,...selection-n>)
|
-
index-expression
-
specifies a numeric constant, variable,
or expression.
-
selection
-
specifies a character constant, variable,
or expression. The value of this argument is returned by the CHOOSEC function.
In a DATA step,
if the CHOOSEC function returns a value to a variable that has not previously
been assigned a length, then that variable is given a length of 200 bytes.
The CHOOSEC function
uses the value of index-expression to select
from the arguments that follow. For example, if index-expression is three, CHOOSEC returns the value of selection-3. If the first argument is
negative, the function counts backwards
from the list of arguments, and returns that value.
The CHOOSEC function is similar to the
CHOOSEN function except that CHOOSEC returns a character value while CHOOSEN
returns a numeric value.
The following example shows how CHOOSEC chooses from
a series of values:
data _null_;
Fruit=choosec(1,'apple','orange','pear','fig');
Color=choosec(3,'red','blue','green','yellow');
Planet=choosec(2,'Mars','Mercury','Uranus');
Sport=choosec(-3,'soccer','baseball','gymnastics','skiing');
put Fruit= Color= Planet= Sport=;
run;
SAS writes the following line to the log:
Fruit=apple Color=green Planet=Mercury Sport=baseball
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
