MATLAB: How to color the area inside the outers points

colorfill

The simple questions is:
1) If I have the coordinates of some points How can I color the area enclosed by the outer segments?
Image, If you see the attached image you can see the situation. I have the coordinates of the points 6 11 15 and 29. I want to connect 6 with 11, 11 with 29, 29 with 15 and 15 with 6: this is the matter. Is it possibile? I have the coordinates of the points.

Best Answer

x=rand(5,1);
y=rand(5,1);
center_x=mean(x);
center_y=mean(y);
[th,rho] = cart2pol(x-center_x,y-center_y);
thr=sortrows([th,rho]);
[xs,ys]=pol2cart(thr(:,1),thr(:,2));
% figure;   %fill with normal x and y values
% fill(x,y,'r')
figure;
fill(xs+center_x,ys+center_y,'r')
This transforms the coordinates to polar coordinates, sorts them based on the angle around the centre and then transforms these back to cartesian coordinates.
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