> > I want to add an additional column at the right and get in > each row a value which shows the mean of "hunger" of the last two hours.
Isn't that just a moving average? if so, see http://stackoverflow.com/questions/743812/calculating-moving-average-in-r, which mentions zoo for RollingMeans, TTR for MovingAverages, forecast for ma and a possible solution using filter. One of those might help. S Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}} ______________________________________________ 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.
