http://www.mathworks.com/matlabcentral/newsreader/view_thread/234877 MATLAB Central Newsreader - how to plot the distribution of 2d-dct coefficients Feed for thread: how to plot the distribution of 2d-dct coefficients en-us &copy;1994-2012 by MathWorks, Inc. webmaster@mathworks.com MATLAB Central Newsreader http://blogs.law.harvard.edu/tech/rss 60 MathWorks http://www.mathworks.com/images/membrane_icon.gif Wed, 20 Aug 2008 10:08:45 -0400 how to plot the distribution of 2d-dct coefficients http://www.mathworks.com/matlabcentral/newsreader/view_thread/234877#596496 Qingeng.Deng hello, everybody<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i want to plot the distribution of 2d-dct coefficients in<br> matlab. First, i use 'blkproc' fucntion to complete the block dct<br> transform for one image, and then i want to use 'hist' to plot the<br> distribution of coefficients which have the same location in all<br> blocks. The problem is that I don't know how to decide the second<br> parameter of hist function, inluding the length and the interval.<br> Because the max value of coefficients is different for different<br> locations in one block and also for various images.