color dot plot

Color Scatter Plot for random data point visualization. It mimics a continuous 2D probability distribution.
coldotplot(x,y,s0,Ad) creates at scatterplot with dots of sizes that correspond to their density in the swarm of points. The larger dots will also have a more "hot" color in the dense particle region. The data x and y are vectors of the same size, s0 is a parameter of local radii around each datapoint (defalult = 0.5). Ad is a visualization parameter for the area of the weighted dots (default = 1).
Warning: May be slow for very large sizes of x and y. It's very basic and may well be improved...

% Example:
N=1000;
x=randn(1,N);
y=10*randn(1,N);
s0=0.5;
Ad=0.2;
% Plot the density color plot
coldotplot(x,y,s0,Ad)