expanding: Expanding Window Functions

Description Usage Arguments Details Value Author(s) Examples

Description

apply summary functions on an expanding basis

Usage

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Arguments

x

An Fts object

Details

apply a function that takes a vector and returns a scalar on an expanding basis to an fts object

Value

an fts object

Author(s)

Whit Armstrong

Examples

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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)

armstrtw/fts documentation built on May 10, 2019, 1:42 p.m.