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com_or_rpeak.m
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com_or_rpeak.m
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% BRAVEHEART - Open source software for electrocardiographic and vectorcardiographic analysis
% com_or_rpeak.m -- Find center of QRST complex for beat alignment
% Copyright 2016-2024 Hans F. Stabenau and Jonathan W. Waks
%
% Source code/executables: https://github.com/BIVectors/BRAVEHEART
% Contact: [email protected]
%
% BRAVEHEART is free software: you can redistribute it and/or modify it under the terms of the GNU
% General Public License as published by the Free Software Foundation, either version 3 of the License,
% or (at your option) any later version.
%
% BRAVEHEART is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
% without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
% See the GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License along with this program.
% If not, see <https://www.gnu.org/licenses/>.
%
% This software is for research purposes only and is not intended to diagnose or treat any disease.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function R = com_or_rpeak(QRS, signal, hz, ap)
N = length(QRS);
switch ap.align_flag
case 'CoV'
R = zeros(N, 1);
[~, ~, ~, start_qrs, end_qrs, ~] = ...
qrs_width_est(signal, QRS, ap.cov_thresh, ap.cov_mf_samp(hz), false);
for i = 1:N
R(i) = center_of_mass(signal(start_qrs(i):end_qrs(i))) + start_qrs(i)-1;
end
case 'Rpeak'
R = QRS;
otherwise
error('Unknown align_flag in Beats: %s', ap.alight_flag);
end
end