ButterworthFilter: ButterworthFilter

Description Usage Arguments Details Value Author(s) Examples

Description

Applies a low-pass Butterworth filter recursively

Usage

1
ButterworthFilter(x, tau = 200)

Arguments

x

A numeric vector giving the elements in the series

tau

A numeric that determines the time constant of the filter, in units of the steps in the input time series.

Details

See the description in"ProcessingAlgorithms.pdf". Do not use this function; it is for testing historical processing of RAF data files, but there is an error that causes an offset in the filtered values. Use signal::butter instead. Missing values are skipped in the recursive filter and are replicated in the output.

Value

The filtered numeric series

Author(s)

William Cooper

Examples

1
## Not run: xf <- ButterworthFilter (x, tau)

NCAR/Ranadu documentation built on July 30, 2019, 11:08 p.m.