%GENCIRC Generation of a one-class circular dataset% % 	A = gencirc(n,s)%% Generation of a one-class circular dataset with radius 1 and% normally distributes radial noise with standard deviation s.% % See also datasets% Copyright: R.P.W. Duin, duin@ph.tn.tudelft.nl% Faculty of Applied Physics, Delft University of Technology% P.O. Box 5046, 2600 GA Delft, The Netherlandsfunction a = gendatc(n,s)if nargin < 1, n = 1; endif nargin < 2, s = 0.1; endalf = rand(n,1)*2*pi;r = ones(n,1) + randn(n,1)*s;a = [r.*sin(alf),r.*cos(alf)];a = dataset(a);