"its"
cumsum
diff
lag
ts
POSIXct
itsFile
itsLags
itsJoin
itsTimes
itsSubset
itsFin
itsDisp
itsInfo
itsCumdif
itsArith
itsInterp
b <- newIts(1:60,ncol=3) cumsum(b) diff(b,lag=2)
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