; PIXSTD
;---------------------------------------------------------------
;! RMS pixel deviation
;# ADVERB IMAGING TV
;-----------------------------------------------------------------------
;;  Copyright (C) 1995, 2020
;;  Associated Universities, Inc. Washington DC, USA.
;;
;;  This program is free software; you can redistribute it and/or
;;  modify it under the terms of the GNU General Public License as
;;  published by the Free Software Foundation; either version 2 of
;;  the License, or (at your option) any later version.
;;
;;  This program is distributed in the hope that it will be useful,
;;  but WITHOUT ANY WARRANTY; without even the implied warranty of
;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;  GNU General Public License for more details.
;;
;;  You should have received a copy of the GNU General Public
;;  License along with this program; if not, write to the Free
;;  Software Foundation, Inc., 675 Massachusetts Ave, Cambridge,
;;  MA 02139, USA.
;;
;;  Correspondence concerning AIPS should be addressed as follows:
;;         Internet email: aipsmail@nrao.edu.
;;         Postal address: AIPS Project Office
;;                         National Radio Astronomy Observatory
;;                         520 Edgemont Road
;;                         Charlottesville, VA 22903-2475 USA
;-----------------------------------------------------------------------
;---------------------------------------------------------------
PIXSTD    LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
PIXSTD
Type: Adverb   (Real)
Use:  An RMS deviation about the mean image value in the units
      specified in the image header.
Null value:  none.
Verbs:
   ACTNOISE.....Puts estimate of actual image uncertainty and zero in
                header.
   IMSTAT.......Determine image statistics in rectangular area and
                return results in adverbs.
   TVSTAT.......Determine image statistics in polygonal areas set with
                the TV cursor and return results in adverbs.
Tasks:
   CUBIT........Model a galaxy's density and velocity distribution from
                full cube.
   DCONV........Deconvolves a Gaussian from an image.  PIXSTD is the rms
                level to stop the iterations.
   GAL..........Determine parameters from a velocity field.
   IMEAN........Displays the mean & extrema and plots histogram of an
                image.
   POLCO........Task to correct polarization maps for Ricean bias.
   SERCH........Finds line signals in transposed data cube.
   WARP.........Model warps in Galaxies.
----------------------------------------------------------------