% Compute wavelet tree. [wt,wd] = wp2wtree(wpt,wpd); % Plot wavelet tree structure wt. plottree(wt)
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Extract wavelet tree from wavelet packet tree.
[T,D] = wp2wtree(T,D)
wp2wtree is a one- or two-dimensional wavelet packet analysis function.
[T,D] = wp2wtree(T,D) computes the modified tree structure T and data structure D (see maketree), corresponding to the wavelet decomposition tree.
% Load signal.
load noisdopp; x = noisdopp;
% Decompose x at depth 3 with db1 wavelet packets.
[wpt,wpd] = wpdec(x,3,'db1');
% Plot wavelet packet tree structure wpt.
plottree(wpt)
% Compute wavelet tree.
[wt,wd] = wp2wtree(wpt,wpd);
% Plot wavelet tree structure wt.
plottree(wt)
maketree, wpdec, wpdec2