Dear R helpers, The following output, from Hmisc reShape examples, illustrates how to reshape from a data frame with repeated measures.
I would need to do exactly the opposite ie get sbp1 to 3 and dbp1 to 3 from sbp and and dbp. Is there a way to do that without subsetting, renaming and binding ? Many thanks for any help, Regards, JL > set.seed(33) > n <- 4 > w <- data.frame(age=rnorm(n, 40, 10), + sex=sample(c('female','male'), n,TRUE), + sbp1=rnorm(n, 120, 15), + sbp2=rnorm(n, 120, 15), + sbp3=rnorm(n, 120, 15), + dbp1=rnorm(n, 80, 15), + dbp2=rnorm(n, 80, 15), + dbp3=rnorm(n, 80, 15), row.names=letters[1:n]) > options(digits=3) > w age sex sbp1 sbp2 sbp3 dbp1 dbp2 dbp3 a 38.6 female 109 123 131 81.8 90.9 88.9 b 39.6 female 132 120 120 71.1 86.9 110.0 c 50.1 male 131 148 118 73.4 82.8 52.4 d 38.4 female 104 124 125 84.4 83.5 67.1 > reShape(w, base=c('sbp','dbp'), reps=3, timevar='week', times=c(0,3,12)) week age sex sbp dbp a 1 0 38.6 female 109 81.8 a 2 3 38.6 female 123 90.9 a 3 12 38.6 female 131 88.9 b 1 0 39.6 female 132 71.1 b 2 3 39.6 female 120 86.9 b 3 12 39.6 female 120 110.0 c 1 0 50.1 male 131 73.4 c 2 3 50.1 male 148 82.8 c 3 12 50.1 male 118 52.4 d 1 0 38.4 female 104 84.4 d 2 3 38.4 female 124 83.5 d 3 12 38.4 female 125 67.1 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html