wpcutree
Cut wavelet packet tree
Syntax
T = wpcutree(
T
,L)
[T,RN] = wpcutree(T
,L)
Description
wpcutree
is a one- or
two-dimensional wavelet packet analysis function.
T = wpcutree(
cuts the tree
T
,L)T
at level L
.
[T,RN] = wpcutree(
returns
the same arguments as above and, in addition, the vector T
,L)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)
Version History
Introduced before R2006a