How to fix my my convolution function?
4 views (last 30 days)
Show older comments
Hi, my teacher wants us to make a convolution function instead of using matlabs and this is what i have
x=[1 2 3 4] y=[1 2 3 4]
function P = MyConv1(x,y)
p = length(x); q = length(y);
for n = 1:p+q-1
for k = 1:n
P(n) = [sum(x(k)*y(n-k))];
end
end
however i get this error:
Attempted to access y(0); index must be a positive integer or logical.
Error in MyConv1 (line 11) P(n) = [sum(x(k)*y(n-k))];
someone please help me figure out what the issue is
0 Comments
Answers (1)
Image Analyst
on 19 Mar 2014
Then add 1. n-k is 0 and MATLAB doesn't allow a zero index. Try n-k+1.
2 Comments
Image Analyst
on 19 Mar 2014
Just write the arrays down on paper. Slide them across and see what gets multiplied. It's not that hard to see what to do if you do that. If you really can't figure it out, come back.
See Also
Categories
Find more on Function Creation in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!