1000個采樣點,放到40*40的相空間中,偏移量是0.5*250,看不懂程式為啥乘2的31次方,求大神指導
tau = floor(fs * 0.5);%125
n = 40;
%%
ecg2 = ecg - min(ecg);
ecg2 = 2^31*ecg2/max(ecg2);
delta = ceil(max(ecg2+1)/n);%53687092
%%
di = zeros(n);
for k = 1:length(ecg)-tau
zx = 1 + floor( ecg2(k)/delta );
zy = 1 + floor( ecg2(k + tau)/delta );
%di(zx,zy) = di(zx,zy) + 1;
di(zx,zy) = 1;
end
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