Dale (not David), Good idea. Thanks!!

John Gerstle CDC Information Technological Support Contract (CITS) Biostatistician

>> -----Original Message----- >> From: Dale McLerran [mailto:stringplayer_2@YAHOO.COM] >> Sent: Monday, April 14, 2003 12:40 PM >> To: SAS-L@LISTSERV.UGA.EDU >> Subject: Re: Proc Surveyselect and Minimal Cell Sizes - Was RE: Proc Sort >> Rand om >> >> --- "Gerstle, John" <yzg9@CDC.GOV> wrote: >> > The '123' is just that...a quickie seed. I'll probably use seed=0 >> > when I >> > get this program finished. >> > >> >> Oh, bad idea to use seed=0. If you need to verify the process, >> you can't! However, I have coded programs which employ seed=0 >> to initialize and document the starting seed. You can code >> something like >> >> data _null_; >> seed=0; >> call ranuni(seed,x); >> call symput("seed", put(seed, 16.-L)); >> run; >> >> options symbolgen; >> proc surveyselect seed=&seed ... >> run; >> >> By creating macro variable SEED and employing the SYMBOLGEN >> option, the seed value at execution of the SURVEYSELECT >> procedure is written to the log file. You get the advantage >> of not having to declare your seed before the process is >> initiated with the ability to replicate the results at a later >> date, if needed. >> >> Dale >> >> >> >> ===== >> --------------------------------------- >> Dale McLerran >> Fred Hutchinson Cancer Research Center >> mailto: dmclerra@fhcrc.org >> Ph: (206) 667-2926 >> Fax: (206) 667-5977 >> --------------------------------------- >> >> __________________________________________________ >> Do you Yahoo!? >> Yahoo! Tax Center - File online, calculators, forms, and more >> http://tax.yahoo.com