model2.ChiSq4: model2.ChiSq4

In stw32/PulseWaveform: Extraction of Photoplethysmography Waveform Features and Decomposition Modeling of Pulse Waveforms

model2.ChiSq4

Description

model2.ChiSq4 is a clone of model2.ChiSq3. It differs by providing additional measures of goodness of fit besides reduced ChiSq for the inputted batch. These are listed below.

Usage

model2.ChiSq4(data, params, debug=FALSE, beats, beat, a = NULL, plot = FALSE, renal_param, dias_param, sys_time, w)

Arguments

data	section of ppg time series
params	model parameters
debug	logical, currently redundant
beats	list of number of inputted beats, there beginnings in the time series, and their endings
beat	dataframe of model parameters
a	the combined matrix used in the downhill simplex routine (alternative source of parameters)
plot	logical, if set to true plots model generated waveform against original waveform
renal_param	the starting parameter for 1st reflectance peak timing (inputted to prevent drastic deviations from this value)
dias_param	the starting parameter for 2nd reflectance peak timing (inputted to prevent drastic deviations from this value)
sys_time	the starting parameter for systolic peak timing (inputted to prevent drastic deviations from this value)
w	the timing of the 1st derivative peaks on the ppg time series

Value

fit	list consisting of:
ts_fit	total reduced ChiSq value summed across all beats inputted
beat_fit	list of reduced ChiSq values for each individual beat
max_error	residual of greatest value for each individual beat
NRMSE	Normalised root mean square error (see supplementary material)
aNRMSE	alternative normalised root mean square error (see supplementary material)

Examples

fit_check[[k]] <- model2.ChiSq4(data = ppg, params = NULL, beats = beat_vector,
                                            beat = new_beat, a = sim[1, ], plot = FALSE,
                                            renal_param = renal_param, dias_param = dias_param,
                                            sys_time = sys_time, w = w)

stw32/PulseWaveform documentation built on Dec. 6, 2022, 2:50 a.m.