P=[0.5512	0.5123	0.5087	0.5001	0.6012	0.5298	0.5000	0.4965	0.5103	0.5003; 0.4488   0.4877	0.4913	0.4999	0.3988	0.4702	0.5000	0.5035	0.4897	0.4997];
plot(P(1,:),P(2,:),'+r');
hold on
net=newsom([0 1;0 1],[3 4]);
w1_init=net.IW{1,1};
plotsom(w1_init,net.layers{1}.distances);
a=[100 300 500];
for i=1:3
net=init(net);
net=train(net,P);
figure;
w1=net.IW{1,1};
plotsom(w1,net.layers{1}.distances);
end
p=[0.5;0.5];
y=sim(net,p);
y=vec2ind(y)