www.gusucode.com > graphics 案例源码程序 matlab代码 > graphics/SpecifyMarkerSymbolExample.m

    %% 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.

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