#Hi R-users, #I have an example DF like this: y1 <- rnorm(10) + 6.8 y2 <- rnorm(10) + (1:10*1.7 + 1) y3 <- rnorm(10) + (1:10*6.7 + 3.7) y <- c(y1,y2,y3) x <- rep(1:3,10) f <- gl(2,15, labels=paste("lev", 1:2, sep="")) g <- seq(as.Date("2000/1/1"), by="day", length=30) DF <- data.frame(x=x,y=y, f=f, g=g) DF$wdays <- weekdays(DF$g) DF$conc <- paste(DF$g, DF$wdays) DF
#Now I calculate group means tmp <- aggregate(DF$y, list(DF$x, DF$f), mean) tmp #After doing this, I want to merge string from DF$conc to tmp using DF$x and DF$y as an identifier #The following DF should look like this: Group.1 Group.2 x var1 1 1 lev1 6.607869 2000-01-01 Saturday, 2000-01-04 Tuesday, 2000-01-07 Friday, 2000-01-10 Monday etc. 2 2 lev1 6.598861 etc. 3 3 lev1 7.469262 4 1 lev2 27.488734 5 2 lev2 33.164037 6 3 lev2 34.466359 #How do I do this? #Cheers, #Lauri [[alternative HTML version deleted]] ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.