[R] mean of a value of the last 2 hours

[S Ellison]

> > 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

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