Path: news.mathworks.com!not-for-mail
From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Boundary of group of points
Date: Thu, 19 Mar 2009 19:36:01 +0000 (UTC)
Organization: Universit&#228;tsSpital Z&#252;rich
Lines: 11
Message-ID: <gpu6r1$44r$1@fred.mathworks.com>
References: <gpu68a$nat$1@fred.mathworks.com>
Reply-To: <HIDDEN>
NNTP-Posting-Host: webapp-02-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1237491361 4251 172.30.248.37 (19 Mar 2009 19:36:01 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Thu, 19 Mar 2009 19:36:01 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 11
Xref: news.mathworks.com comp.soft-sys.matlab:526254

"John"
> I have a series of X,Y coordinates:
> X = [1,2,3,4,1,2,34,1,2,3,4];
> Y = [100,100,100,100,200,200,200,200,300,300,400,400];
> I'm trying to determine which points lie on the edge of the "area" created by these points...

a hint:

     help convhull;

us