Given your data are in obj, did you try mean.yrs = aggregate(obj, "year", mean)
? On 06/27/2013 10:56 AM, Nicolas Bories wrote: > Dear all, > > I'm working on EVI-MODIS time series with the R package spacetime. > I have 10 years of data. I want to compute an average year for each pixel. > How can I do this ? > The goal is to compare for each pixel and for specific years the > EVI-MODIS variations and average year variations. > I saw the method aggregate(x, by, FUN = mean, ..., simplify = TRUE) but > I didn't manage to get an average year. > > Thanks in advance for any suggestions ! > > Nicolas. > > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > -- Edzer Pebesma Institute for Geoinformatics (ifgi), University of Münster Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251 83 33081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo