topic Exit IML if error in SAS/IML Software and Matrix Computations

Exit IML if error

richard_hu2003 — Tue, 12 Jul 2011 21:45:23 GMT

Hi Folks,

I have the following IML code in a large macro called %LARGE. Of course, there are other command lines within OOPS module. I want to exit IML and go to label "doit" if there is any error when executing IML. But it falied to execute %goto statement. Could anybody help? Thanks.

proc iml;

start; /* module will be named MAIN */
errcode = {" %if errors >= 0 %then %goto doit ; "} ;
call push (errcode);
errors = 0;

start oops; /* start module OOPS */

.......

finish; /* finish OOPS */
run oops;

finish; /* finish MAIN */

errors= -1; /* disable */
quit;

Exit IML if error

Rick_SAS — Wed, 13 Jul 2011 17:50:22 GMT

Have you looked at

http://communities.sas.com/message/37481#37481 ?

It is a slightly different problem, but related, and it includes a complete example that you can run. Also, it points out that the 'doit' label must be within the OOPS module.

Re: Exit IML if error

richard_hu2003 — Wed, 13 Jul 2011 19:04:09 GMT

Hi Rick.

Thanks for your reply. If it encounters errors, I want it %goto 'doit' label which is outside the IML procedure and skip other steps inside IML. Is there a nice way to do that? Thanks.

Re: Exit IML if error

Rick_SAS — Thu, 14 Jul 2011 13:18:08 GMT

An interesting question. I've never done it. You might try this (I don't know whether it will work):

1) Before PROC IML, use %LET IsError = 0;

2) In PROC IML, if there is an error CALL SYMPUT("IsError", "1"); and then ABORT;

3) After the PROC IML code, use a %IF statement to check the value of &IsError. If it is set, then %GOTO.

Re: Exit IML if error

richard_hu2003 — Thu, 14 Jul 2011 18:13:21 GMT

Thanks, Rick!