what does wavelet decomposition structure mean?

Question

running the code:

>> load('matlabF.mat')
>> f

   f =

     4     6    10    12     8     6     5     5

>> [c,l] = wavedec(f,3,'haar');
>> c

    c =

    19.7990    2.8284   -6.0000    2.0000   -1.4142   -1.4142    1.4142         0

>> l

    l =

     1     1     2     4     8

can you please tell me what the elements in the arrays c and l mean?

Answer 1

You gotta need to read matlabF's doc first.

[C,L] = wavedec(X,N,'wname') returns the wavelet decomposition of the signal X at level N, using wname. N must be a strictly positive integer (see wmaxlev for more information). The output decomposition structure contains the wavelet decomposition vector C and the bookkeeping vector L. The structure is organized as in this level-3 decomposition example.