Hi,
I would like to draw circles in matlab.
But my code does not work well where the central points do not lie on center part.
I would appreciate if anyone could advice me any improvement.
fData = [ 3.6 79 1.8 54 3.333 74 2.283 62 4.533 85 2.883 55 4.7 88 3.6 85 1.95 51 4.35 85 1.833 54 3.917 84 4.2 78 1.75 47 4.7 83 2.167 52 1.75 62 4.8 84 1.6 52 4.25 79 1.8 51 1.75 47 3.45 78 3.067 69 4.533 74 3.6 83 1.967 55 4.083 76 3.85 78 4.433 79 4.3 73 4.467 77 3.367 66 4.033 80 3.833 74 2.017 52 1.867 48 4.833 80 1.833 59 4.783 90 ]
[n,dim]=size(fData);
%rng(1);
idx = randsample(n,2)
X = fData(~ismember(1:n,idx),:); % Training data
Y = fData(idx,:)
r = 0.3;
figure;
plot(X(:,1),X(:,2),'.k');
hold on;
plot(Y(:,1),Y(:,2),'*r');
% xx
Just posting the solution here for provenance:
Yes, I've taken a look and if you remove the ratio part in the position calculation (height), the circle (rectangle) is centered at Yx Yy. So what you need to do is compensate for this ratio in the Yy value such that the diameter of the circle in the y-plane is equivalent.
pos = [Yx-r Yy-(r/ratio) (2*r) (2*r)/ratio];
NB: the data set should be semi-colon separated to give two columns;
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