FilterNIHR
(Package: RHRV) :
Artefact filter based in an adaptive threshold
An algorithm that uses adaptive thresholds for rejecting those beats different from the given threshold more than a certain value. The rule for beat acceptation or rejection is to compare with previous, following and with the updated mean. We apply also a comparison with acceptable physiological values (default values 25 and 200 bpm).
● Data Source:
CranContrib
● Keywords: misc
● Alias: FilterNIHR
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PlotSpectrogram
(Package: RHRV) :
Calculates and Plots spectrogram
Plots spectrogram of the heart rate signal as calculated by CalculateSpectrogram() function
● Data Source:
CranContrib
● Keywords: hplot
● Alias: PlotSpectrogram
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LoadApneaWFDB
(Package: RHRV) :
Loads apnea episodes for WFDB record
Loads the information of apnea episodes and stores it into the data structure containing the beat positions and other related information
● Data Source:
CranContrib
● Keywords: IO, connection
● Alias: LoadApneaWFDB
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Nonlinearity tests
● Data Source:
CranContrib
● Keywords:
● Alias: NonlinearityTests
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BuildNIHR
(Package: RHRV) :
Builds the instantaneous heart rate signal from a beat position array
The instantaneous heart rate can be defined as the inverse of the time separation between two consecutive heart beats. Once the beats have been identified, and since the only valid values contributing to the heart rate signal are the corresponding to normal beats preceded by other normal beats, a further operation should be performed for the calculation of the instantaneous heart rate.
● Data Source:
CranContrib
● Keywords: misc
● Alias: BuildNIHR
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WARNING: deprecated function. Calculates ra and rb distances that verify that their correlation values are Cra and Crb
● Data Source:
CranContrib
● Keywords: misc
● Alias: CalculateRfromCorrelation
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LoadBeatRR
(Package: RHRV) :
Builds an array of beats positions from an ascii file
Reads an ascii file containing RR values, i.e. distances between two successive beats.
● Data Source:
CranContrib
● Keywords: IO, connection
● Alias: LoadBeatRR
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CalculateDFA
(Package: RHRV) :
Detrended Fluctuation Analysis
Performs Detrended Fluctuation Analysis (DFA) on the RR time series, a widely used technique for detecting long range correlations in time series. These functions are able to estimate several scaling exponents from the time series being analyzed. These scaling exponents characterize short or long-term fluctuations, depending of the range used for regression (see details).
● Data Source:
CranContrib
● Keywords:
● Alias: CalculateDFA, EstimateDFA, PlotDFA
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CalculateTimeLag
(Package: RHRV) :
Estimate an appropiate time lag for the Takens' vectors
Given a time series (timeSeries), an embedding dimension (m) and a time lag (timeLag), the n^{th} Takens' vector is defined as
● Data Source:
CranContrib
● Keywords:
● Alias: CalculateTimeLag
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LoadBeatEDFPlus
(Package: RHRV) :
Imports data from a record in EDF+ format
Basically, this algorithm reads the annotation file for the ECG register, and stores the information obtained in a data structure.
● Data Source:
CranContrib
● Keywords: IO, connection
● Alias: LoadBeatEDFPlus
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