Derive the (smoothed) least square lowpass, given the cutoff
frequency omega.c and the length of the filter n
based on Bloomfield 1976
Usage
Lowpass(omega.c, n = 9, sample = 1, convergence = TRUE)
Arguments
- omega.c
cutoff frequency
- n
length of the filter, has to be odd
- sample
sampling rate of the timeseries on which the filter will be applied (1/deltat)
- convergence
TRUE: smoothed least square lowpass; FALSE = unsmoothed
Value
vector of filter weights