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2D Histogram

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09 Mar 2007 (Updated )

Calculates and draws the 3D histogram of 2 Dimensional input data

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Description

function H = hist2d(D,Xn,Yn,[Xlo Xhi],[Ylo Yhi])

Calculates and draws the 3D histogram of 2 Dimensional input data D.

Counts number of points in the bins defined by
X = linspace(Xlo,Xhi,Xn) and
Y = linspace(Ylo,Yhi,Yn)

 D must be a 2 column or 2 row matrix or an array of complex numbers

 [Xlo Xhi],[Ylo Yhi] are optional and default to the min and max of
 the input data
 Xn and Yn are optional and default to 20

 Example:
  hist2d([randn(1,10000); randn(1,10000)])

Really just a copy of 2D Histogram, by Rey Patlolla, but with default arguments, optionally complex input and draws a 3D histogram.

Acknowledgements

2 Dimensional Histogram inspired this file.

This file inspired Create Contour and Fast 2 D Histogram Calculation.

MATLAB release MATLAB 7.2 (R2006a)
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Comments and Ratings (13)
07 Nov 2012 Liang  
31 May 2011 Jochem  
03 Sep 2010 Juan Dominguez

Great function. Used it before discovering hist3.

28 Jun 2010 Thomas

This function works, but it is much slower than hist3 on large data sets. For instance, on two arrays of ~500,000 length, this function took ~30 s while hist3 took ~0.1 s.

15 Apr 2009 David

A nice, easy-to-use function; though I've just discovered that the statistics toolbox has a function hist3 with this functionality.

15 Apr 2009 David

Simple and useful!

05 Sep 2008 Kamrul Hakim  
01 Aug 2008 Reda Boufatah

very good demonstration using hist

18 Jul 2008 umair qureshi

fairly easy to understand and use !! hats off to u!!

07 Mar 2008 Brian Liswell

Easy to implement. Grinds out fairly quickly on my PC.
The responses for the 2D Histogram entry say stuff about bugs - any clue what those are?

Know of any way to make a rectangular topped surface instead of angular surf?

16 Feb 2008 Adama Ouattara

Good !

28 Sep 2007 Aureli Soria-Frisch  
24 Jul 2007 General Tricky

Handy tool

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