Hello! I am running a loop. The result of each run of the loop is a data frame. I am merging all the data frames. For exampe:
The dataframe from run 1: x<-data.frame(a=1,b=2,c=3) The dataframe from run 2: y<-data.frame(a=10,b=20,d=30) What I want to get is: merge(x,y,all.x=T,all.y=T) Then I want to merge it with the output of the 3rd run, etc. Unfortunately, I can't create the placeholder for the overall resutls BEFORE I run the loop because I don't even know how many columns I'll end up with - after merging all the data frames. I was thinking of creating an empty list: first<-NULL ...and then updating it during each run by merging it with the data frame that is the output of the run. However, when I try to merge the empty list with any non-empty data frame - it ends up empty: merge(first,a,,all.x=T,all.y=T) Is there a way to make it merge while keeping everything? Thanks a lot! -- Dimitri Liakhovitski Ninah Consulting www.ninah.com ______________________________________________ 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.
