Functions and CALL Routines |
Category: | Array |
Syntax | |
Arguments | |
Details | |
Examples | |
Example 1: One-dimensional Array | |
Example 2: Multidimensional Array | |
See Also |
Syntax |
LBOUND<n>(array-name) |
LBOUND(array-name,bound-n) |
is an integer constant that specifies the dimension for which you want to know the lower bound. If no n value is specified, the LBOUND function returns the lower bound of the first dimension of the array.
is the name of an array that was defined previously in the same DATA step.
is a numeric constant, variable, or expression that specifies the dimension for which you want to know the lower bound. Use bound-n only if n is not specified.
Details |
The LBOUND function returns the lower bound of a one-dimensional array or the lower bound of a specified dimension of a multidimensional array. Use LBOUND in array processing to avoid changing the lower bound of an iterative DO group each time you change the bounds of the array. LBOUND and HBOUND can be used together to return the values of the lower and upper bounds of an array dimension.
Examples |
In this example, LBOUND returns the lower bound of the dimension, a value of 2. SAS repeats the statements in the DO loop five times.
array big{2:6} weight sex height state city; do i=lbound(big) to hbound(big); ...more SAS statements...; end;
This example shows two ways of specifying the LBOUND function for multidimensional arrays. Both methods return the same value for LBOUND, as shown in the table that follows the SAS code example.
array mult{2:6,4:13,2} mult1-mult100;
Syntax | Alternative Syntax | Value |
---|---|---|
LBOUND(MULT) | LBOUND(MULT,1) | 2 |
LBOUND2(MULT) | LBOUND(MULT,2) | 4 |
LBOUND3(MULT) | LBOUND(MULT,3) | 1 |
See Also |
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Array Processing in SAS Language Reference: Concepts |
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.