search for: itssubset

If I understood correctly in irregular time series (its) objects, values are indexed by time stamps in POSIX format. But if I try to select the value of my time series corresponding to specific time stamp in the following way: x - its object i <- as.POSIXct("2006-05-19 15:30:00") x[i,] or x[i] or x[i,1] I get the error message: subscript out of bounds. If I use integers: x[1,1] it

> S-Plus has the function AggregateSeries() whose name is self > explanatory. For instance one can derive monthly series from daily > ones by specifying end-of-period, averages, sums, etc. I looked for > a similar function in the packages "its" and "tseries", but found > nothing. I also help.searched() for aggregate to no avail. Would > anybody be so kind