its (version 0.1.1)

its-cumdif: Cumulation, Differencing for Irregular Time-Series Objects

Description

Cumulation, differencing for objects of class "its".

Value

• An object of class "its"

Usage

cumsum(x) diff(x,lag=1)

Details

cumsum and diff perform the cumulative sum and difference of each column in turn. In diff, the first lag rows are discarded.

See Also

ts, POSIXct, its-file, its-lags its-join its-times its-subset its-fin its-disp its-info its-cumdif its-arith

Examples

a <- matrix(c(seq(by=24*60*60,length=20),1:20,41:60),nrow=20,ncol=3)
b <- as.its(a)
cumsum(b)
diff(b,lag=2)