Thanks for this, will have a look now. Much appreciated,
-----Original Message----- From: Peter Dalgaard [mailto:p.dalga...@biostat.ku.dk] Sent: 24 April 2009 11:40 To: Bronagh Grimes Cc: r-help@r-project.org Subject: Re: [R] Array Bronagh Grimes wrote: > Just wondering if anyone has any tips for using arrays? You're presupposing that R works like SAS. It doesn't. This looks like a job for reshape (either Hadley Wickham's package or the built-in function). > I am trying to convert the following SAS code to R: > data A2; > set A1; > by subject_id; > retain BX1-BX10 i; > array b(1:10) BX1-BX10 ; > if first.subject_id then do ; > do j=1 to 10; > b(j) = .; > end; > i=1; > end; > b(i) = BX; > i = i+1; > if last.subject_id then output; > run ; -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
