Description Usage Arguments Details Value Author(s) Examples
apply summary functions on an expanding basis
1 2 | expanding.max(x)
expanding.min(x)
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x |
An Fts object |
apply a function that takes a vector and returns a scalar on an expanding basis to an fts object
an fts object
Whit Armstrong
1 2 3 4 | x <- fts(index=seq(from=Sys.Date(),by="days",length.out=100),data=rnorm(100))
x.emax <- expanding.max(x)
x.emin <- expanding.min(x)
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