; CMETHOD
;---------------------------------------------------------------
;! specifies the method by which the uv model is computed
;# ADVERB IMAGING MODELING UV CALIBRATION
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
CMETHOD   LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
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CMETHOD
Type:  Adverb  (String*4)
Use:   To select the method used to compute the fringe visibilities of
       the source model.
       'DFT ' uses the direct Fourier transform, which is the most
              accurate.
       'GRID' does a gridded-FFT interpolation model computation.
       '    ' allows the program to use the fastest method, which is
              usually DFT at the beginning of a Clean and GRID later
              when there are more Clean components to subtract
Null value:
       ' '  => task chooses
Tasks:
   BLCAL.......Compute closure offset corrections
   BLCHN.......Compute closure offset corrections on a
               channel-by-channel basis
   BLING.......Find residual rate and delay on individual baselines
   BPASS.......Computes spectral bandpass correction table
   CALIB.......Determines the calibration to be applied to a uv data set
               given a model of the source.
   CPASS.......Computes polynomial spectral bandpass correction table
   EVAUV.......Subtracts & divides a model into UV data, does
               statistics on results
   FRING.......Fringe fit data to determine antenna calibration,
               delay, rate
   IMAGR.......Images and Cleans uv data.
   KRING.......Fringe fit data to determine antenna calibration,
               delay, rate
   LPCAL.......Determines instrumental polarization for UV data
   OOSUB.......Subtracts/divides a model from/into a uv data base
   PCAL........Determines instrumental polarization for UV data
   RLCAL.......Determines instrumental right-left phase versus time (a
               self-cal)
   SCIMG.......Full-featured imaging plus self-calibration loop with
               editing
   SCMAP.......Images, cleans, and self-cals a uv data set
               iteratively.
   UVCON.......Generate sample UV coverage given a user defined array
               layout
   UVSUB.......Subtracts/divides a model from/into a uv data base.
Procedures:
   IMFRING.....Large image delay fitting with IM2CC and OOFRING.
   IMSCAL......Large image self-cal with IM2CC and OOCAL.
   LINIMAGE....Build image cube from multi-IF data set.
   OOCAL.......Determines antenna complex gain with frequency-dependent
               models.
   OOFRING.....Fringe fit data to determine calibration with spectral
               index options.
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