% l i c z b a danych
I = 1000;
% l i c z b a atrybutow
n = 2 ;
% w sp olcz ynni k u c z e ni a
eta = 0.5 ;
%Wagi p e r c e p t r o n u
W = zeros(1,n+1) ;
%l i c z n i k i t e r a c j i
k = 0 ;
z=2*pi;
%x=[ones(I,1) z*rand(I/2,1) [rand(I/2,1) ; rand(I/2,1) ]];

x=[ones(I,1) z*rand(I,1) [rand(I/2,1); (-1*rand(I/2,1))]];
y=zeros(I,1);

for i=1:I
if abs(sin(x(i,2)))>abs(x(i,3))
    y(i)=-1;
else
    y(i)=1;
end
end

hold on

for i=1:length(x)
    if y(i)>0
plot(x(i,2),x(i,3),'go');
    else
plot(x(i,2),x(i,3),'bo');
    end
end

for i=1:I
    x(i,2)=((x(i,2)-0))/z*(1-(-1))+(-1);
end
x
%x(:,2)=2*abs((x(:,2)-min(x(:,2)))/(max(x(:,2))-min(x(:,2))))-1;