by considering the following reproducible example:
v0<-c("a","xxx","c",rep("xxx",2))
v1<-c(1,"b",3,"d","e")
v2<-c(6,2,8,4,5)
v3<-c("xxx",7,"xxx",9,10)df_start<-data.frame(v0,v1,v2,v3) df_start v0<-letters[1:5] v1<-1:5 v2<-6:10 df_end<-data.frame(v0,v1,v2) df_endI need to shift by one column some given rows in the initial data frame called "df_start" so that to get the final structure as in "df_end"; please consider that the value "xxx" in the rows of "df_start" can be anything so that I necessarly need to apply by row index position (in my reproducible example rows: 2, 3, 5);
I'm really stuck with that problem and I can not conceive any viable solution up to now
any hints? best regards m ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see 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.
