I need to scale the axes of a convolution function after plotting successive convolutions of x with itself. How do I scale the x axis for each so it has the correct support and how do I scale the convolutions to show that they are density functions?
조회 수: 18 (최근 30일)
이전 댓글 표시
x=ones(1,20);
con0=conv(x,x);
con1=conv(x,con0);
figure(1);
plot(con0);
figure(2);
plot(con1);
Thanks in advance!
댓글 수: 2
Rik
2020년 2월 4일
편집: Rik
2020년 2월 4일
This time I edited your question for you. Next time, please use the tools explained on this page to make your question more readable.
After every convolution the number of elements changes. Is this intentional?
If you use plot with only one input it will use the index as the x-value, so if you want a different axis you can simply supply an x-scale that suits you.
By 'showing that they are density distributions' do you mean they should be scaled to an area of 1?
채택된 답변
Rik
2020년 2월 4일
Something like the code below should be close to what you want. Addapt as needed.
y=ones(1,20);
N=10;
output=cell(N,1);
output{1}=conv(y,y);
for n=2:N
output{n}=conv(y,output{n-1});
end
figure(1);clf(1)
%determine number of subplots
a=floor(sqrt(N));a=max(a,1);
b=ceil(N/a);
for n=1:N
subplot(a,b,n)
con=output{n};
x=linspace(0,1,numel(con));
con=con/trapz(x,con);%scale to unit area
plot(x,con);
title(sprintf('iteration %d',n))
axis([min(x) max(x) 0 5])
end
댓글 수: 0
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Line Plots에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!