Differences in Wavelet results between code and 'wavemenu' GUI/App
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Robert
am 19 Mai 2015
Kommentiert: Robert
am 22 Mai 2015
I have the following small piece of code
[C,L] = wavedec(data,6,'dmey')
It spits out a meyer wavelet decomposition. However, the results differ greatly from when I use the wavelet GUI/App (wavemenu) (see attached plots of D6 using both methods).
The results from the GUI are more reasonable and what I am trying to replicate with the code, I can't understand why the results are so different, am I missing something in the code?
I need to use code, not just the GUI and I need to perform literally hundreds of these decomposition, you can't do that in the GUI.
Thank you in advance for any help! I am a newbie so detail would be appreciated
0 Kommentare
Akzeptierte Antwort
Nalini Vishnoi
am 20 Mai 2015
Hi Robert,
Can you please post your data? I tried to reproduce the same with MATLAB (demo) data using the following code and GUI at the same time:
load sumsin; s = sumsin;
[c,l] = wavedec(s,6,'dmey');
cA3 = appcoef(c,l,'dmey',6);
[cD1,cD2,cD3,cD4,cD5,cD6] = detcoef(c,l,[1,2,3,4,5,6]);
D6 = wrcoef('d',c,l,'dmey',6); % Just reconstructing the details at level 6
figure, plot(D6);
When I compared plot of 'D6' computed using the code and from the GUI, I got identical results. In order to help you, I would need to take a look at the data you are using.
Thanks,
Nalini
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Denoising and Compression finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!