In article <1167817911.622354.206500@48g2000cwx.googlegroups.com>,
 "kal" <khaldoon2300@gmail.com> wrote:

> Hello All
> I am new to to the Wavelet topic and I need to understand some basics
> My question is that if I use the following Matlab code
> 
> I = [2 5 8 9 7 4 -1 1];
> [cA,cD] = dwt(I,'db4');
> 
> I get the following result for cA and cD
> cA =
> 10.5188  10.8384   2.6725   7.6008   12.8422    3.6526    0.8223
> 
> cD =
> 0.3774   0.6048   -0.9413  -1.9202   0.9256     1.8001   -0.1160
> 
> The question is: How does that matlab get that result?!!!!!
> 
> Thanks a lot

What is it about the result that is troubling you?  Is it the length of 
cA and cD?  You might take a look at the help pages for dwt and dwtmode.

KP

Hello All
I am new to to the Wavelet topic and I need to understand some basics
My question is that if I use the following Matlab code

I = [2 5 8 9 7 4 -1 1];
[cA,cD] = dwt(I,'db4');

I get the following result for cA and cD
cA =
10.5188  10.8384   2.6725   7.6008   12.8422    3.6526    0.8223

cD =
0.3774   0.6048   -0.9413  -1.9202   0.9256     1.8001   -0.1160

The question is: How does that matlab get that result?!!!!!

Thanks a lot