reconstructed Wavelet Approximation or details through the Approximation coeffs or details coeffs?

[sunyyhyzx]

Hi，
Thank you for your warmly reply. I am a student, and now using your open code to learn the wavelet decomposition. I use function "modwt2(wt, inp)" to deconpose a grid named X and obtain the "wavecoeffs", Then I can use the function "getWT2Coeffs(wt, wavecoeffs, J, "A", &ir, &ic)" to obtain the approximation coeffs which has the same size with the input grid X. But I do not want obtain the coeffs , I want the reconstructed Wavelet Approximation or details throug the approximation coeffs or detail coeffs, which function should I use?
Any help much appreciated.
Thank you very much! :)

[rafat]

GetWT2Coeffs is a helper function and will simply return the coefficients at a branch. If you want to reconstruct the signal, you'll have to use IMODWT2 so for example if you use MODWT2 and obtain the wavecoeffs for signal x then you can use IMODWT2 on wavecoeffs to perfectly reconstruct the signal. Rafat