%% Specify Stem and Marker Options
% Create a stem plot and set the line style to a dotted line, the marker symbols to diamonds, and the color to red using the LineSpec option.

figure
X = linspace(0,2*pi,50)';
Y = (exp(X).*sin(X));
stem(X,Y,':diamondr')

% To color the inside of the diamonds, use the 'fill' option.
% Copyright 2015 The MathWorks, Inc.