plot 2 ( Stems / Histograms ) in the same axis

Hello, I have two vectors that quantify a data in the same dates. I want to plot their stems / Histograms in the same axis like the image in the attachement. Thanks.

Answer 1

[Kuifeng]

 %1 use the 'hist' function to get the vertical axis for two arrays.
%2 use the function 'bar' to plot