I would like to preprocess my collected data with a bandpass filter between
0.1 and 10 HZ and
0.01 and 10Hz.
butter(n, W, type = c( "pass"))
According to the signal package documentation the parameter W must be between 0 and 1.
W : critical frequencies of the filter. W must be a scalar for low-pass and high-pass filters, and W must be a two-element vector c(low, high) specifying the lower and upper bands. For digital filters, W must be between 0 and 1 where 1 is the Nyquist frequency
How do I determine W correctly according to this definition ?
Thanks!
I tried to calculate the Nyquist frequency