Outer Bounds of a Dataset

2 views (last 30 days)
Saeid on 15 Jul 2020
Commented: Saeid on 16 Jul 2020
I have a set of xy data and I want to find the outer bounds of this set so that when I plot the data and connect these outer bound points, all ther other points will be confined to these boundaries, as shown if figure.
How can I do that?

Accepted Answer

Image Analyst
Image Analyst on 15 Jul 2020
You can try boundary(). There is a shrink factor input to determine how closely the boundary "hugs" the point set. The shrink factor is a scalar between 0 and 1. Setting s to 0 gives the convex hull, and setting s to 1 gives a compact boundary that envelops the points. The default shrink factor is 0.5.
x = gallery('uniformdata',30,1,1);
y = gallery('uniformdata',30,1,10);
xlim([-0.2 1.2])
ylim([-0.2 1.2])
k = boundary(x,y);
hold on;
  1 Comment
Saeid on 16 Jul 2020
This works wondefully. Thank you!

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!