Have you ever linked SAS code, If so, describe the link and
any required statements used to either process the code or
the step itself?
Answers were Sorted based on User's Feedback
Answer / ganesh
The link statement tells sas to jump immediately to the
statement label that is indicated inthe label statement and
to continue executing.
Is This Answer Correct ? | 2 Yes | 1 No |
Another way to call Subroutine.
Example:
*========================================================
* Bakul Shah
* HOW MANY DIFFERENT WAYS IT IS POSSIBLE TO MAKE
* CHANGE FOR A DOLLAR? ---> 292 Posibilities ??
*
* H HALF DOLLAR
* Q QUARTER
* D DIME
* N NICKEL
* P PENNY
* A LOOP - INITIALIZE TO ZERO
* NO LINE NUMBER - INITIALIZE TO 55
* KOUNT TOTAL NUMBER INITIALIZE TO ZERO
* ;
/* The file 'c:coinpage.txt' is:
File Name=C:\WINDOWS\system32\coinpage.txt,
RECFM=V,LRECL=256 */
Data Null_ ;
/* file 'c:coinpage.txt'; */
File CoinPage ;
A=0 ;
PageCount = 0 ;
NO=55; Retain NO;
KOUNT=0;
DO H = A to 2; /* Half Dollar */
DO Q = A to 4; /* Quarter */
DO D = A to 10; /* Dime */
DO N = A to 20; /* Nickle */
DO P = A to 100; /* Cents */
IF(((H*50)+(Q*25)+(D*10)+(N*5)+P)=100) THEN
do;
KOUNT+1 ;
If NO > = 55 then
do;
Link PageHeader;/* Calling Subroutine*/
end;
NO+1 ;
Put @9 KOUNT 3. @18 H 3. @27 Q 3.
@36 D 3. @45 N 3. @54 P 3. ;
end;
end;
end;
end;
end;
end;
Return;
PageHeader: /* Subroutine */
PageCount + 1 ;
Put @70 'Page' +0 PageCount 2.
/@8 'KOUNT' @20 'H' @29 'Q' @38 'D'
@47 'N' @56 'P' ;
NO = 0 ;
Return;
Run;
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / prakhar
SAS code could be linked using the GOTO or the Link statement.
The difference between the LINK statement and the GO TO statement is in the action of a subsequent RETURN statement. A RETURN statement after a LINK statement returns execution to the statement that follows LINK. A RETURN statement after a GO TO statement returns execution to the beginning of the DATA step, unless a LINK statement precedes GO TO, in which case execution continues with the first statement after LINK. In addition, a LINK statement is usually used with an explicit RETURN statement, whereas a GO TO statement is often used without a RETURN statement.
When your program executes a group of statements at several points in the program, using the LINK statement simplifies coding and makes program logic easier to follow. If your program executes a group of statements at only one point in the program, using DO-group logic rather than LINK-RETURN logic is simpler.
Goto eg.
data info;
input x;
if 1<=x<=5 then go to add;
put x=;
add: sumx+x;
datalines;
7
6
323
;
Link Eg.
data hydro;
input type $ depth station $;
/* link to label calcu: */
if type =’aluv’ then link calcu;
date=today();
/* return to top of step */
return;
calcu: if station=’site_1′
then elevatn=6650-depth;
else if station=’site_2′
then elevatn=5500-depth;
/* return to date=today(); */
return;
datalines;
aluv 523 site_1
uppa 234 site_2
aluv 666 site_2
…more data lines…
;
GOTO – http://support.sas.com/onlinedoc/913/getDoc/en/lrdict.hlp/a000201949.htm
LINK – http://support.sas.com/onlinedoc/913/getDoc/en/lrdict.hlp/a000201972.htm
Is This Answer Correct ? | 0 Yes | 0 No |
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