projf11.m

clc; clear all; close all;
load('100m.mat');
x=val(1,:);
ecg=x';
figure(1); 
plot(ecg); grid on; hold on;
title('ecg wave'); xlabel('time'); ylabel('amplitude');
N=8; M=8;
k=input('enter the total no.of samples ');
% n=0:1:k; 
% figure
subplot(2,2,1);
plot(ecg); grid on; hold on;
title('ecg wave'); xlabel('time(msec)'); ylabel('amplitude(mV)');
N=8; M=8;
n=1:1:2*k
    for i=0:1:7
         x=ecg(n);         y=ecg(n+i+1);         z=ecg(n+i); 
          y1=y-z;          x2=y1.*y1;          x3=abs(x2);
          a(n)=x3*(N+i+1);
    end
%      disp(a); 
subplot(2,2,2);
plot(y1);  grid on; 
title('derivated'); xlabel('time(msec)'); ylabel('amplitude(mV)');
subplot(2,2,3);
plot(a);  grid on; hold on;
title('derivated, squared & integrated'); xlabel('time(msec)'); ylabel('amplitude(mV)');
%      hold on;
%     figure
 n=1:1:k;
% j=1:7 %           plot(n,((a(n-j)/M)));
s1=a(n); s2=a(n+1); s3=a(n+2); s4=a(n+3); 
s5=a(n+4); s6=a(n+5); s7=a(n+6); s8=a(n+7);
s9=a(n+8); s10=a(n+9); s11=a(n+10); 
s12=a(n+11); s13=a(n+12); s14=a(n+13); s15=a(n+14); s16=a(n+15);
s=(s1+s2+s3+s4+s5+s6+s7+s8+s9+s10+s11+s12+s13+s14+s15+s16)/16;    disp(s);
subplot(2,2,4); plot(n,s); grid on; hold on;
title('moving averager'); xlabel('time(msec)'); ylabel('amplitude(mV)');
% plot(n,x); % plot(n,abs(x1)); % plot(n,a);% plot(n,b(n)); % plot(n,c(n));