A list of optional arguments and where they are used

For Recurrence-Plot based metric:

m=int the embedding dimension for the phase-space reconstruction of the signals, default=10
tau=int time-lag for phase-space rec., default=15
FAN=int fixed amount of neighbours for each point in the recplot, default=(int)0.05*n1
noiseamp=double factor to use for adding noise to the recplot, default=0.01

For Time-Frequency based metric:

sample_frequency=double of the signal, default is 500 (should really be provided!)
winfct=void* windowing function, default is window_hanning
winlength=int size of the window, default is MAX( SQR( sqrt(next_pow2( n ))-3 ), 5 )
N_freq=int number of frequency bins, default is winlength*4
N_time=int number of time bins, default is n
corner_freqs=double* (array with two double entries), default is (0.0,250.0)

For derivative DTW

theta1=double, default is 1.0
theta2=double, default is 1.0