On Tue, 31 Mar 2009, Stephen Weigand wrote:
I wonder if the 'sep' argument in reshape() is being ignored unintentionally:## From example(reshape) df <- data.frame(id=rep(1:4,rep(2,4)), visit=I(rep(c("Before","After"),4)), x=rnorm(4), y=runif(4)) reshape(df, timevar="visit", idvar="id", direction="wide", sep = "_") id x.Before y.Before x.After y.After 1 1 0.773 0.293 -0.021 0.658 3 2 -0.518 0.351 -0.623 0.946 5 3 0.773 0.293 -0.021 0.658 7 4 -0.518 0.351 -0.623 0.946 Is this more of the intended result when 'sep = "_"'?
No. sep= is designed for going the other way. If you have wide-format data with variable names x.Before y.Before x.After y.After, using sep="." will let reshape() work out that the long-format variable names are x and y and the conditions to be put in the time variable are Before and After. -thomas Thomas Lumley Assoc. Professor, Biostatistics tlum...@u.washington.edu University of Washington, Seattle ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
