Butterworth Filter — filter

This function computes the cyclical component of the Butterworth filter.

filter_bw(x, ...)

Arguments

x	`[univariate vector]` Univariate vector, numeric or ts object with only one dimension.
...	Further arguments passed to `bwfilter`.

[univariate vector]

Univariate vector, numeric or ts object with only one dimension.

...

Further arguments passed to bwfilter.

# \donttest{
unemp <- ggplot2::economics$unemploy
unemp_cycle <- filter_bw(unemp, freq = 10)
plotx(cbind(unemp, unemp_cycle))
# }