convolution in matlab...

[myasir786]

n=-10:10;

x=((1/3).^(-n)).*((-n-1)>=0);
h=((n-1)>=0);

subplot(3,1,1);
stem(n,x);
title('x');

subplot(3,1,2);
stem(n,h);
title('h');

c=conv(h,x);
m=0:length(c)-1;
subplot(3,1,3);
stem(m,c);
title('conv');



what is the problem with this program it is showing first two graph correctly but it is not showing 3rd one...

 

[_Eduardo_]

h is a logical variable and conv need numeric args.

Write : h=double(((n-1)>=0)); (double or single)