AIPS HELP file for BASELINE in 31DEC09

As of Sat Nov 21 13:09:03 2009

HELP SECTION

BASELINE
Type: Adverb  (REAL(50))
Use:  Standard data selection adverb, used in conjunction with
      ANTENNAS to specify baseline selection.
Null Value:  0
      All null value means use all antennas.

      BASELINE is always used with ANTENNAS.  In that case, a baseline
      between antenna I and J is selected (or deselected if any of
      ANTENNAS or BASELINE are negative) if
      # in ANTE     # in BASE     Selected or de-selected if
           0             0        always
          >0             0        (I in ANTE) .OR. (J in ANTE)
           0            >0        (I in BASE) .OR. (J in BASE)
          >0            >0        ((I in ANTE) .AND. (J in BASE)) .OR.
                                  ((I in BASE) .AND. (J in ANTE))

       Verbs VLA, EVLA, VLBA, and HSA may be used to set values into
       BASELINE (or any other adverb array).  In this case, the equals
       sign is required, e.g.,
               ANTENNAS = EVLA
               BASELINE = VLA
       to process all baselines between new EVLA and old VLA antennas.
       Be careful of INNAME et al., SUBARRAY, and DOINVERS which
       control what these verbs actually do.

EXPLAIN SECTION