simp() in the StreamMetabolism package may do the trick. I have used this on time series of chemical constituent masses. hth,
Stephen Sefick On Thu, Jul 1, 2010 at 9:56 AM, suse <meyfa...@uni-potsdam.de> wrote: > > Hi, > > I want to know the area under a curve, which is not given as a function, but > as values in a time series. It is not a smooth curve, but switches often > between positive values and zero (the values describe the moisture in the > soil over a year, one entry is one day). I already tried > area.between.curves, but got only 0 as result. I guess, it doesn't work > because of these multiple changes between 0 and positive values (most of the > time, the values are 0 and in the certain case I tested, the positive values > were only on single days; but for other values positive values last longer) > I hope, someone can help me! > > THank you! > -- > View this message in context: > http://r.789695.n4.nabble.com/Calculate-area-under-a-curve-tp2275283p2275283.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > -- Stephen Sefick ____________________________________ | Auburn University | | Department of Biological Sciences | | 331 Funchess Hall | | Auburn, Alabama | | 36849 | |___________________________________| | sas0...@auburn.edu | | http://www.auburn.edu/~sas0025 | |___________________________________| Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods. We are mammals, and have not exhausted the annoying little problems of being mammals. -K. Mullis ______________________________________________ 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.
