How to drop certain subbands/layers in DWT

[chamain]

Hi, I'm wondering if there is a way to completely drop some of the subbands in DWT. For example consider a Level-1 CDF 9/7 DWT of a PNG color image. This would give LL,LH,HL and HH for each color channel, Let's say I want to completely drop ( not to include) 'HL' subband of a certain color channel. Is there a direct way to do this by changing the arguments?

[rouault]

github issues are not for questions