heart rate detection using ecg

this is my code for heart rate detection but i am getting ouput has single continuous line like -------------------------------,anyone please help me to sort out this problem

y=load('ecg.txt');

plot(y);

h=fir1(1000,1/1000*2,'high');

y_filter=filter(h,1,y);

plot(y_filter);

ds=y_filter.^2;

plot(ds);

last=0;

upflag=0;

pulse=zeros(length(ds),1);

for i=1:length(ds)

if(ds(1)>0.1)

if(upflag==0)

if(last>0)

t=i-last;

p=1000/t*60;

end

last=i;

end

upflag=100;

else

if(upflag>0)

upflag=upflag-1;

end

end

pulse(i)=p;

end

plot(pulse);

Answer 1

[Amin Beshir]

57

[Image Analyst]

How did you get that? He didn't even post any data. He forgot to attach 'ecg.txt'.