Use wavemenu it is a comprehensive GUI for wavelets... The image,histogram with statistical values will be listed.

@Petros Xanthopoulos: Ok, how to obtain the coefficient matrix of the wavelet packet decomposition,

I only have this code:

load chess

T = wpdec2 (X, 2, 'haar')

I couldn't obtain the matrix of the coefficient

@Aparna Murthy: I need to do it by code for other purposes.

Thank you,

Find the attached with all types of wavelet usage and code snippets for analysis...

Also : dwt2(...) returns namely approximate (lpf ) and details(hpf) (3 - vertical, horizontal and diagonal)} coefficients. [Array size is dependent on the original image size]

http://www.mathworks.com/help/wavelet/ref/dwt2.html

Hope this helps...

It's probably way too late now, but I just stumpled upon the same problem. One may use the "read" function, to get the data.

t = wpdec2(M, 'wname');

img = read( t, 'data');

(you need to reshape the img, because it's going to be a vector)

see also: http://de.mathworks.com/help/wavelet/ref/read.html

You may also use "wpcoef"-function to get data from a certain node. E.g.:

img = wpcoef( t, [1,0])

Use "plot( t )" to see each node.