Hmm, Suggests you might have some missing data as opposed to having zeros for those days.
something about your number of days for oct/nov/dec from 1980-2005 doesnt seem right either so double check that. On Thu, Nov 4, 2010 at 2:36 PM, <govin...@msu.edu> wrote: > thanks .. and it did work! but i see some jagged lines in between the > years, typically like the one joining dec of previous year and oct of the > successive year. Is this how it would look like? can it be made better? > > have included the plot! > > heres the code..! > > x.date <- as.Date(paste(chn.arr[,1], chn.arr[,2], chn.arr[,3], sep="-")) > ts.chn <- ts(chn.arr[1:2386,4]) > z.chn <- zoo(ts.chn, x.date) > plot(z.chn, main = "Rainfall variations", xlab = "Year", ylab="Daily > rainfall (mm)") > > -- > Regards, > Mahalakshmi > Graduate Student > #20, Department of Geography > Michigan State University > East Lansing, MI 48824 > Quoting steven mosher <mosherste...@gmail.com>: > > > I would look at using the package 'zoo' your time series data would be a > > zoo object > > and then your date data would be coerced as well, > > > > zoo, is very slick. > > > > On Thu, Nov 4, 2010 at 12:18 PM, <govin...@msu.edu> wrote: > > > >> > >> > >> Hi all, > >> > >> I have a matrix as given below... > >> > >> year month day prec > >> 1 1980 10 1 13.4 > >> 2 1980 10 2 0.0 > >> 3 1980 10 3 0.0 > >> 4 1980 10 4 0.0 > >> 5 1980 10 5 0.0 > >> 6 1980 10 6 0.0 > >> 7 1980 10 7 0.0 > >> 8 1980 10 8 0.0 > >> 9 1980 10 9 0.0 > >> 10 1980 10 10 0.0 > >> 11 1980 10 11 7.4 > >> 12 1980 10 12 5.4 > >> 13 1980 10 13 7.2 > >> 14 1980 10 14 0.0 > >> 15 1980 10 15 0.0 > >> 16 1980 10 16 0.0 > >> 17 1980 10 17 41.2 > >> 18 1980 10 18 0.0 > >> 19 1980 10 19 0.0 > >> 20 1980 10 20 0.0 > >> 21 1980 10 21 0.0 > >> 22 1980 10 22 0.0 > >> 23 1980 10 23 0.0 > >> 24 1980 10 24 0.0 > >> 25 1980 10 25 0.0 > >> 26 1980 10 26 0.0 > >> 27 1980 10 27 2.0 > >> 28 1980 10 28 0.0 > >> 29 1980 10 29 0.0 > >> 30 1980 10 30 0.0 > >> 31 1980 10 31 0.0 > >> 32 1980 11 1 0.0 > >> 33 1980 11 2 0.0 > >> 34 1980 11 3 0.0 > >> 35 1980 11 4 0.0 > >> 36 1980 11 5 12.4 > >> > >> the precipitation values extend from 1980 to 2005, but only for october, > >> november and december. I would like to plot just these 3 months for the > >> given time period (1980 - 2005). Is there a way to get these values in > the > >> x-axis. i.e. i need a plot with its axis reading "1980, 1981, 1982 .. > 2005" > >> (even if the months are specified then it should be of more use). for > now, > >> i get an axis like .. "0, 500, ... 2000" (the plot is giving the index > >> values). > >> > >> i tried changing the freq as given below, but did not work! > >> ts.chn <- ts(chn.arr[1:2386,4], start=c(1980, 10), end=c(2005, 12), > >> freq=365) > >> plot(ts.chn) > >> > >> -- > >> Regards, > >> Mahalakshmi > >> Graduate Student > >> #20, Department of Geography > >> Michigan State University > >> East Lansing, MI 48824 > >> [[alternative HTML version deleted]] > >> > >> > >> _______________________________________________ > >> R-sig-Geo mailing list > >> R-sig-Geo@stat.math.ethz.ch > >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >> > >> > > > [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
