| Wavelet Toolbox | |
Syntax
Description
wpcutree is a one- or two-dimensional wavelet packet analysis function.
T = wpcutree(T,L) cuts the tree T at level L.
[T,RN] = wpcutree(T,L) returns the same arguments as above and, in addition, the vector RN contains the indices of the reconstructed nodes.
Examples
% The current extension mode is zero-padding (see dwtmode).
% Load signal.
load noisdopp; x = noisdopp;
% Decompose x at depth 3 with db1 wavelet packets
% using Shannon entropy.
wpt = wpdec(x,3,'db1');
% Plot wavelet packet tree wpt.
plot(wpt)
% Cut wavelet packet tree at level 2.
nwpt = wpcutree(wpt,2);
% Plot new wavelet packet tree nwpt.
plot(nwpt)
| | wpcoef | wpdec | |
© 1994-2005 The MathWorks, Inc.
