R: Expanding Window Functions

expanding {fts} | R Documentation

## Expanding Window Functions

### Description

apply summary functions on an expanding basis

### Usage

    expanding.max(x)
    expanding.min(x)

### 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

    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)

[Package fts version 0.9.9.2 Index]