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回复 #1 liutian 的帖子
wrcoef reconstructs the coefficients of a one-dimensional signal, given a wavelet decomposition structure (C and L) and either a specified wavelet ('wname', see wfilters for more information) or specified reconstruction filters (Lo_R and Hi_R).
appcoef is a one-dimensional wavelet analysis function.
appcoef computes the approximation coefficients of a one-dimensional signal.
detcoef is a one-dimensional wavelet analysis function.
D = detcoef(C,L,N) extracts the detail coefficients at level N from the wavelet decomposition structure [C,L]. See wavedec for more information on C and L.
差别还是很明显的吧,
[ 本帖最后由 zhangnan3509 于 2007-8-17 11:23 编辑 ] |
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