smooth.fft {itsmr}

Apply a low pass filter

Description

Apply a low pass filter

Usage

smooth.fft(x, f)

Arguments

x

Time series data

f

Cut-off frequency, 0-1

Details

The cut-off frequency is specified as a fraction. For example, c=.25 passes the lowest 25% of the spectrum.

Value

Returns a vector the same length as x.

Examples

y = smooth.fft(deaths,.1)
plotc(deaths,y)