Plotting horizontal stack bars in MATLAB

Hi all,

I have three vectors and i want to plot them as horizontal colored stack bars with units as well. Have provided an image of the expected output. Can someone please help me how to do this in MATLAB?

    x1=[2*ones(1,2) 4*ones(1,1) 6*ones(1,2)];
    x2=[0.2*ones(1,2) 0.4*ones(1,1) 0.6*ones(1,2)];
    x3=[20*ones(1,2) 40*ones(1,1) 60*ones(1,2)];