CalculateSpectrogram {RHRV}R Documentation

Calculates the spectrogram of a signal

Description

Calculates the spectrogram of the heart rate signal after filtering and interpolation in a window of a certain size

Usage

CalculateSpectrogram(HRVData, size, shift, sizesp = 1024, verbose = FALSE)

Arguments

HRVData Data structure that stores the beats register and information related to 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

Value

Returns the spectrogram of the heart rate signal

Note

An example including all the necessary steps to obtain the spectrogram of a wfdb register is giving below:

##Reading a wfdb register and storing into a data structure:
md = CreateHRVData(verbose = TRUE)
md = LoadBeatWFDB(md, RecordName = "register_name", RecordPath = "register_path", verbose = TRUE)
##Calculating heart rate signal:
md = BuildNIHR(md, verbose = TRUE)
##Filtering heart rate signal:
md = FilterNIHR(md, verbose = TRUE)
##Interpolating heart rate signal:
md = InterpolateNIHR(md, verbose = TRUE)
##Calculating spectrogram:
CalculateSpectrogram(md, size = 120, shift = 10, sizesp = 1024, verbose = TRUE)

Author(s)

M. Lado, A. Mendez, D. Olivieri, L. Rodriguez, X. Vila

References

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)


[Package RHRV version 2.1 Index]