Path: news.mathworks.com!not-for-mail
From: "Niall Heavey" <REMOVEniallALLheaveyCAPLOCKS@gmail.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Curve
Date: Wed, 30 Jun 2010 15:54:04 +0000 (UTC)
Organization: The MathWorks, Inc.
Lines: 61
Message-ID: <i0fpas$l7a$1@fred.mathworks.com>
References: <i0fl3s$aqc$1@fred.mathworks.com> <i0fno8$60j$1@fred.mathworks.com>
Reply-To: "Niall Heavey" <REMOVEniallALLheaveyCAPLOCKS@gmail.com>
NNTP-Posting-Host: webapp-05-blr.mathworks.com
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1277913244 21738 172.30.248.35 (30 Jun 2010 15:54:04 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Wed, 30 Jun 2010 15:54:04 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 1711497
Xref: news.mathworks.com comp.soft-sys.matlab:649368

"John D'Errico" <woodchips@rochester.rr.com> wrote in message <i0fno8$60j$1@fred.mathworks.com>...
> "Niall Heavey" <REMOVEniallALLheaveyCAPLOCKS@gmail.com> wrote in message <i0fl3s$aqc$1@fred.mathworks.com>...
> > Hi all, I am looking to plot a straight forward curve.
> > I thought it would be simple enough to do but I can't find anything to help me so far.
> > 
> > Basically I want a curve from point 1 to point 3 that goes through point 2.
> > 
> > Sounds simple enough but does anyone know a function available for it?
> > 
> > Thanks in advance.
> 
> There are infinitely many such curves.
> 
> The simplest is a piecewise linear curve, i.e., connect the dots.
> Plot can do it for you.
> 
> If you want a better answer than that, you need to tell us, is
> this in two dimensions? Or 3 or more? Must the curve be smooth?
> Is this a single valued relationship, or does the curve wrap around?
> 
> John

Its two dimensions, it would be better if it is smooth.

I'd say the easiest way to explain it would be to send the code:

radius = 10;
plot(0,0,'b*')
hold on
i = 4;

for j = 1:i*2
    t = linspace(0,2*pi,(i*2)+1);
    t = linspace(-(t(2)/2),((2*pi)-(t(2)/2)),(i*2)+1);
    r = radius;
    A = r*cos(t);
    B = r*sin(t);
    plot(A(j),B(j),'b*')

%     axis ([-25 25 -25 25])
%     axis square
%     % text(a(j),b(j),strcat('  User ',num2str(j)))
end

for j = 1:i
    t = linspace(0,2*pi,i+1);
    r = radius*2;
    a = r*cos(t);
    b = r*sin(t);
    plot(a(j),b(j),'g*')

    axis ([-25 25 -25 25])
    axis square
    text(a(j),b(j),strcat('  User ',num2str(j)))
end

So basically what i'm trying to do is create a link between the center point and user 1, this would be going through both point A(1),B(1) and A(2),B(2), then the link to user 2 form the center would go through A(3),B(3) and A(4),B(4) and so on.

Hope that makes more sense!

Thanks