%x=rand(1,10)*10; %0-10葷撈狼 罰待藹 1x10 罰待 氦磐甫 父電促.
x=[2.3 2.4 2.34 2.41 2.71 2.65 3.34 3.73]
histo(x,0.5,0.5/2,'r-') % histogram闌 弊赴促. 
hold on
%x綿俊 單撈磐甫 嘛絹林扁 困茄 貿府
tmp = zeros(1,8);
x1=[x;tmp];
scatter(x1(1,:), x1(2,:), 'rx')
hold off