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 1 251.5
10 79 1 197.3
11 80 1 144.1
12 81 1 104.5
13 82 1 17.7
14 83 1 151.8
...
Thank you so much for your help.
Roslina
[[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.
