new_swdft_matching_demod function

Constructor function for class 'swdft_matching_demod'

new_swdft_matching_demod(x, n, fitted, thresh, max_cycles, smooth, order,
  passfreqs, maxvals, freqs, khats, amps, phases, demods, cycle, resids,
  fits, return_rows)

Arguments

• x: numeric. Signal to demodulate
• n: integer. Window size for SWDFT
• fitted: fitted values
• thresh: numeric. Threshold to determine whether to continue demodulating
• max_cycles: maximum number of demodulation cycles
• smooth: character. Type of smoothing to use, accepts either 'ma', 'double_ma', or 'butterworth' (the default)
• order: moving average parameter if 'smooth' argument equals 'ma' or 'double_ma'. Defaults to 5
• passfreqs: pass frequency used in each iteration
• maxvals: Maximum SWDFT coefficient for each iteration
• freqs: Frequencies used in each iteration
• khats: Integer version of frequency.
• amps: Instantaneous amplitude for each iteration
• phases: Instantaneous phase for each iteration
• demods: List of demodulated signal and smoothed demodulated signal for each iteration
• cycle: Number of cycles used
• resids: Residuals for each iteration
• fits: Fitted values for each iteration
• return_rows: Logical vector indicating which iterations occurred. Used for subsetting.

Returns

list with the following elements

• coefficients. coefficients from the R local signals with time-varying amplitude and phase model.
• fitted. fitted values of cosine regression model
• residuals. residuals of cosine regression model
• data. original signal used to fit cosine regression
• smooth. list with the filter used ('smooth') and parameters ('order' for 'ma' or 'double_ma', 'passfreq' for butterworth)
• demod. list w/ the demodulated signal, and smoothed demodulated signal
• thresh. Threshold used.
• iterations. List of fits, residuals, and maximum values for each iteration