CalculateSpectrogram {RHRV} | R Documentation |
Calculates the spectrogram of the heart rate signal after filtering and interpolation in a window of a certain size
CalculateSpectrogram(Data, size, shift, sizesp = 1024, verbose = FALSE)
Data |
Data structure that stores the beats register and all the information obtained from it |
size |
Size of window for calculating spectrogram (seconds) |
shift |
Displacement of window for calculating spectrogram (seconds) |
sizesp |
Seconds for calculating spectrogram (zero padding) |
verbose |
Boolean argument that allows to specify if the function returns additional information |
Returns Data, the structure that contains beat positions register, associated heart rate instantaneous values also, filtered heart rate signal equally spaced, and spectrogram of the heart rate signal
An example including all the necessary steps to obtain the power bands of a wfdb register is giving below:
## Heart Rate Signal Creation md=CreateData(verbose=TRUE) md=LoadBeatAscii(md,"register_name",verbose=TRUE) md=LoadEpisodesAscii(md,"episodes_file_name",verbose=TRUE) ## Heart Rate Signal Creation md=CreateData(verbose=TRUE) md=LoadBeatAscii(md,"beat_ascii.txt",verbose=TRUE) md=LoadEpisodesAscii(md,"apnea_ascii_tmp.txt",verbose=TRUE) md=BuildNIHR(md,verbose=TRUE) md=FilterNIHR(md,verbose=TRUE) md=InterpolateNIHR(md,verbose=TRUE) ## Calculating Spectrogram CalculateSpectrogram(md,size=120,shift=10,sizesp=1024,verbose=TRUE)
M. Lado, A. Mendez, D. Olivieri, L. Rodriguez, X. Vila
L. Rodriguez-Linares, X. Vila, A. Mendez, M. Lado, D. Olivieri, "RHRV: An R-based software package for heart rate variability analysis of ECG recordings," 3rd Iberian Conference in Systems and Information Technologies (CISTI 2008), Proceedings I, 565-573, ISBN: 978-84-612-4476-8 (2008)