filtfft {xcms} | R Documentation

## Apply an convolution filter using an FFT

### Description

Expands a vector to the length of the filter and then convolutes it using two successive FFTs.

### Usage

    filtfft(y, filt)

### Arguments

`y` | numeric vector of data to be filtered
`filt` | filter with length `nextn(length(y))`

### Value

A numeric vector the same length as y.

### Author(s)

Colin A. Smith, csmith@scripps.edu

[Package xcms version 3.2.0 Index]