Hi @vincent,
I’m not sure I entirely follow – would you like to remove just high frequency detail, just low frequency detail, or both? As well, is this for the purposes of map visualization only, or do you plan on doing additional post-processing after filtering the maps?
If you want to remove just high frequency detail, then the Volume Tools low-pass filter function will do that. You must specify the resolution above which information will be removed (e.g. if you set this to 10 Å as you did in the original post, this means that all information with wavelength < 10 Å will be discarded).
Best,
Michael