Dear all,
Can I use Stata to plot a graph to visualize the treatment statuses of each observation in a panel dataset.For example,in the picture below,State "ME" "MN" "WI" are treated in 1976.So,before 1976,the color is blue and after 1976 the color is dark blue.the control states' color is light blue.
Does Stata have a command to plot this kind of graph?

best regards
Raymond