Hi,
cfs = read(wpt,'data');
returns the coefficients in the terminal nodes of the wavelet packet tree. These are not equal to the data.
For example:
dwtmode('per');
x = randn(16,1);
T = wpdec(x,3,'db2');
plot(T)
Now, click on (3,0) (3,1), (3,2) and so on.
You see in each one of these nodes, there are 4 coefficients. Since there are 8 such nodes, there are a total of 32 coefficients.
cfs = read(T,'data');
returns these 32 coefficients.
