Wrapper to WFDB WQRS:
Creates a WQRS annotation file at the current MATLAB directory.
The annotation file will have the same name as the recorName file,
but followed with the *.wqrs suffix. Use RDANN to read the annoations
into MATLAB's workspace in order to read the sample QRS locations.
If recordName is the path to a record at PhysioNet's database, then
the annation files will be stored in a subdirectory with the same relative
path as recordName and under the current directory.
NOTE: In order to read the generated annotation file using RDANN, it is
necessary to have the WFDB record (*.hea and *.dat) files in the same
directory as the annotation file.
CITING CREDIT: To credit this function, please cite the following paper in your work:
Zong, W., G. B. Moody, and D. Jiang."A robust open-source algorithm to detect onset
and duration of QRS complexes." Computers in Cardiology, 2003. IEEE, 2003.
String specifying the name of the record in the WFDB path or
in the current directory.
Optional Parameters are:
A 1x1 integer specifying the sample number at which to stop reading the
record file (default read all = N).
A 1x1 integer specifying the sample number at which to start reading the
annotion file (default 1 = begining of the record).
A 1x1 integer. Specify the signal to obtain the annotation (default
= 1, first signal).
A 1x1 double. Specify the detection threshold in millivolts
(default = 100). Use higher values to reduce false detections, or lower values to
reduce the number of missed beats.
A 1x1 boolean. Find and annotate J-points (QRS ends) as well as QRS onsets.
Default is false.
A 1x1 double. Specify the power line main frequency in Hz (default=
60 Hz), wqrs will apply a notch filter of the specified frequency
to the input signal before length-transforming it.
A 1x1 boolean. Resample the input at 120 Hz if the power line frequency
is 60 Hz, or at 150 Hz otherwise (default= false : do not resample).
Source code written by Wei Zong and George B. Moody.
MATLAB wrapper written by Ikaro Silva, 2013
Last Modified: -
%Example - Requires write permission to current directory