%% Create Rectangle Annotation
% Create a stem plot and add a rectangle annotation to the figure. Change
% the color of the rectangle outline by specifying the |Color| property.

% Copyright 2015 The MathWorks, Inc.


figure
data = [2 4 6 7 8 7 5 2];
stem(data)
dim = [.3 .68 .2 .2];
annotation('rectangle',dim,'Color','red')

%%
% Add a second rectangle annotation to the figure. Specify the fill
% color by setting the |FaceColor| property. Add transparency by setting
% the |FaceAlpha| property to a value between 0 (completely transparent)
% and 1 (completely opaque).

dim2 = [.74 .56 .1 .1];
annotation('rectangle',dim2,'FaceColor','blue','FaceAlpha',.2)