Hi, i am merging two data frames of different time periods, so that the result contains data from both for the same time period. however, I want the result to output columns in a certain order. the common column between the two data frames is date.
for example: df1 columns: mod1 mod2 mod3 mod4 date #(there are actually 691 mod columns) df2 columns: obs wy date after merge, i want the order of the columns to be all mod data columns from df1, followed by the obs and wy columns from df2, followed by the date column. i almost get want i want with (at least it doesn't put the common column date as the first column as merge does by default): new = merge(df1, df2, by=c("date"))[, union(names(df1), names(df2))] however, that of course gives me all of df1 followed by all of df2, which doesn't put obs immediately after the mod columns: what i get: mod1 mod2 mod3 mod4 date obs wy what i want: mod1 mod2 mod3 mod4 obs wy date any suggestions on how to output the columns in the order i want, without having to rearrange the order after the fact? thank you for any help! Janet [[alternative HTML version deleted]] ______________________________________________ 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.