%% Specify Marker Symbol
% Create vectors |x| and |y| as sine and cosine values with random noise. Then, 
% create a scatter plot and use diamond markers with an area of 140 points squared.

% Copyright 2015 The MathWorks, Inc.


theta = linspace(0,2*pi,150);
x = sin(theta) + 0.75*rand(1,150);
y = cos(theta) + 0.75*rand(1,150);  
a = 140;
scatter(x,y,a,'d')