AIPS HELP file for DOAPPLY in 31DEC26

As of Mon Jun 15 11:39:22 2026

HELP SECTION

DOAPPLY
Type: Scalar
Use:  To tell a task whether it should do apply the results of an
      operation to the data or simply examine what those results
      might be.

Default: <= 0 => False => do not apply to the data.
         >  0 => True  => apply to the data

Tasks:
   CALIB.........Determines antenna calibration: complex gain.
                 DOAPPLY >= 0 causes the calibration to be applied to
                 single-source files creating a new output file.
   FRING.........Fringe fit data to determine antenna calibration,
                 delay, rate.  DOAPPLY >= 0 causes the calibration to be
                 applied to single-source files creating a new output
                 file.
   RLDIF.........Determines the difference in phase between the right
                 and left polarization calibrations - requires CALIB,
                 PCAL, and BPASS to be run first.  Then it determines
                 the remaining phase difference between right and left
                 from the RL and LR phases.  DOAPPLY selects whether
                 the results appear immediately in a new CL or BP table
                 version or not.  In the continuum mode, the phase of
                 RL and LR* are returned in CLCORPRM if DOAPPLY <= 0.
   SNP2D.........Task to convert SN table single-channel phase to delay.
                 DOAPPLY > 0 copies the input amplitudes to the output
                 SN table.
   TLCAL.........Converts JVLA telcal files to an SN file.  DOAPPLY > 0
                 applies an source table fluxes to the output SN table.
   VHDIF.........Find/apply V minus H linear polarization phase
                 difference.  DOAPPLY > 0 causes the results to be
                 applied to a new CL or BP table.
   XYDIF.........Find/apply X minus Y linear polarization phase
                 difference.  DOAPPLY > 0 causes the results to be
                 applied to a new CL or BP table.

EXPLAIN SECTION