Function. Return complex visibility for bincounts. The parameter k selects a particular baseline, i.e. fringe frequency. Examples: v=fringevis(bincounts(*,0,*),7), which returns the (complex) visibility of channel 1, and the baseline with the frequency number 7. If no sub-array of bincounts is selected, then the returned visibility array has the same dimensions as the input, minus the bin index.
Function. Return the (averaged) squared visibility amplitude for bincounts. The parameter n selects how many samples will be averaged.
visrotate(v, l, d)
Function. Return rotated complex visibility for input visibility $v$, wavelength scale $l$, and group delay $d$.