Displaying 1 result from an estimated 1 matches for "agg_dt1".
2012 Oct 06
1
arrange data
Dear r-users,
I have dailly rainfall data from year 1971 to 2000. I use aggregate to form monthly rainfall data. What I don't understand is that the data for the year 2000 become on the top, instead of year 1971. Here are some codes and output:
agg_dt1 <- aggregate(x=dt1[,4],by=dt1[,c(1,2)],FUN=sum)
> head(agg_dt1,20); tail(agg_dt1,20)
Tahun Bulan x
1 0 1 398.6
2 71 1 934.9
3 72 1 107.2
4 73 1 236.4
5 74 1 10.5
6 75 1 744.6
7 76 1 9.2
8 77 1 108.7
9 78 1...