c09ddf computes the inverse one-dimensional multi-level maximal overlap discrete wavelet transform (MODWT). This routine reconstructs data from (possibly filtered or otherwise manipulated) wavelet transform coefficients calculated by
c09dcf from an original set of data. The initialization routine
c09aaf must be called first to set up the MODWT options.
c09ddf performs the inverse operation of
c09dcf. That is, given a set of wavelet coefficients computed by
c09dcf using a MODWT as set up by the initialization routine
c09aaf on a real array of length
$n$,
c09ddf will reconstruct the data array
${y}_{\mathit{i}}$, for
$\mathit{i}=1,2,\dots ,n$, from which the coefficients were derived.
If on entry
${\mathbf{ifail}}=0$ or
$\mathrm{-1}$, explanatory error messages are output on the current error message unit (as defined by
x04aaf).
The accuracy of the wavelet transform depends only on the floating-point operations used in the convolution and downsampling and should thus be close to machine precision.
None.