Function to make a 2D histogram

Make 2D histogram on pairs of (x,y) data

Description

%A Simple function that makes a 2D histgram

% Input: data: two cols, x value; y value
% xrange: range and bins for x value (edges)
% yrange: range and bins for y value (edges)
%Output: Count of a specifice (x,y) bin combination;
% Suggested visualizing tool: I like to use imagesc; bar3 will work fine
% too; have to change axis label though

Example:
data(:,1)=randn(100000,1);
data(:,2)=randn(100000,1);
count=hist2d(data,-1:0.1:1,-1:0.1:1);
imagesc(count);

• MATLAB release: MATLAB 7.6 (R2008a)

[Gary]

Doug Hull posted a video showing how to do this without for loops: http://blogs.mathworks.com/videos/2010/01/22/advanced-making-a-2d-or-3d-histogram-to-visualize-data-density/

[Pablo]