www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavedemo/@wtree/split.m
function tnd = split(t,node,x,varargin) %SPLIT Split (decompose) the data of a terminal node. % TNDATA = SPLIT(T,N,X) decomposes the data X % associated to the terminal node N of the % wavelet tree T. % % TNDATA is a cell array (ORDER x 1) such that % TNDATA{k} contains the data associated to % the k-th child of N. % % The method uses DWT (respectively DWT2) for % one-dimensional (respectively two-dimensional) data. % % This method overloads the DTREE method. % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 09-Oct-1998. % Last Revision: 21-May-2003. % Copyright 1995-2004 The MathWorks, Inc. order = treeord(t); mode = t.dwtMode; Lo_D = t.waveInfo.Lo_D; Hi_D = t.waveInfo.Hi_D; tnd = cell(order,1); switch order case 2 [tnd{1},tnd{2}] = dwt(x,Lo_D,Hi_D,'mode',mode,'shift',0); case 4 [tnd{1},tnd{2},tnd{3},tnd{4}] = ... dwt2(x,Lo_D,Hi_D,'mode',mode,'shift',[0 0]); end