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 ?ster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907