AIPS HELP file for GWIDTH in 31DEC25

As of Mon Dec 9 13:41:20 2024

HELP SECTION

GWIDTH
Type: Adverb   (Real(3,4))
Use:  An array, dimension (3,4), containing the initial guess of the
      (Major axis, Minor axis, Position angle) of the component.  The
      units are (pixels, pixels,degrees).  For 1-dimensional fitting
      only the GWIDTH(1,i) are used and the units are determined by
      LTYPE (use TVSET).
Null Value: 0
      Null value means take the clean beam as the first guess.
      If no beam is available use a circular 2-pixel diameter beam.
Verbs:
   MFITSET.......Gets adverbs for running IMFIT and JMFIT.
   SET1DG........Verb to set 1D gaussian fitting initial guesses.
   TK1SET........Verb to reset 1D gaussian fitting initial guess.
   TKAGUESS......Verb to add a plot of the slice model guess directly on
                 TEK.
   TKGUESS.......Verb to display slice model guess directly on TEK.
   TKSET.........Verb to set 1D gaussian fitting initial guesses.
   TV1SET........Verb to reset 1D gaussian fitting initial guess on TV
                 plot.
   TVAGUESS......Verb to re-plot slice model guess directly on TV
                 graphics.
   TVGUESS.......Verb to display slice model guess directly on TV
                 graphics.
   TVSET.........Verb to set slice Gaussian fitting initial guesses from
                 TV plot.  Highly recommended to get the units right.
Tasks:
   BSMOD.........Creates single-dish UV beam-switched data with model
                 sources.
   BSTST.........Graphical display of solutions to frequency-switched
                 data.
   CCMOD.........Enerates Clean components to fit specified source
                 model.  GWIDTH gives the width parameters of Gaussian
                 in the disk times Gaussian model.
   IMFIT.........Fits Gaussians to portions of an image.
   JMFIT.........Fits Gaussians to portions of an image.
   SDMOD.........Modifies single-dish UV data with model sources.
   SLFIT.........Task to fit gaussians to slice data.
   UVFIT.........Fits source models to uv data.
   UVGIT.........Fits source models to uv data.

EXPLAIN SECTION