Task: uvswap
Purpose: Relabel correlations RL as LR and LR as RL
Categories: uv analysis
UVSWAP relabels RL correlations as LR and LR correlations as RL.
RR and LL are left unchanged. The data are copied in their
raw form only, gain, polarization and bandpass tables are
neither applied nor copied.
Key: vis
Input visibility data file. No default
Key: out
Output visibility data file name. No default.