18.32.8 /ZERO

[CLEAN\]UV_FILTER [/RESET] /ZERO [/CHANNELS Channel_List] [/FREQUENCY F1 [... [Fn]] [/VELOCITY V1 [... [Vn]] [/RANGE Min Max [TYPE]] [/WIDTH Width [TYPE]]

Erase filtered channels (set weight and visibilities to zero) rather than simply flagging them (weight set to negative value). This can be more convenient for further display, but is not reversible.

By default, channels to be filtered are flagged (weights becoming negative, and data can be unflagged by UV_FLAG). Flagged channels are ignored in the averaging process, such as UV_RESAMPLE or UV_CONT. However, as UV_MAP (in general) uses only one channel to define the weights for all others, these flagged channels will nevertheless appear in the imaged data cube.

See UV_CHECK for information about handling flagged channels and different beams in a single UV table.