; PIXVAL
;---------------------------------------------------------------
;! Value of a pixel
;# ADVERB IMAGING TV GENERAL
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
PIXVAL    LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
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PIXVAL
Type: Adverb  (Real)
Use:  The image value in the units specified in the header.
Null value:  None
Verbs:
   IMSTAT........Returns statistics of a sub-image.  PIXVAL is the peak
                 image intensity.
   IMVAL.........Returns image intensity and coordinate at specified
                 pixel.
   MAXFIT........Returns pixel position and image intensity at a maximum.
   PUTVALUE......Verb to store a pixel value at specified position.
   QIMVAL........Returns image intensity and coordinate at specified
                 pixel.
   TKVAL.........Verb to obtain value under cursor from a slice.
   TVSTAT........Find the mean and RMS in a blotch region on the TV.
                 PIXVAL is the peak image value in the blotch.
Procedures:
   TVFLUX........Displays coordinates and values selected with the TV
                 cursor.
   TVMAXFIT......Displays fit pixel positions and intensity at maxima on
                 TV.
Tasks:
   AGAUS.........Fits 1-dimensional Gaussians to absorption-line spectra.
                 Rows whose peak value is < PIXVAL are displayed.
   REMAG.........Task to replace magic blanks with a user specified value.
                 PIXVAL is the value that replaces magic blanks.
   XBASL.........Fits and subtracts nth-order baselines from cube (x
                 axis).  Rows whose peak value is < PIXVAL are displayed.
   XGAUS.........Fits 1-dimensional Gaussians to images: restartable.
                 Rows whose peak value is < PIXVAL are displayed.
   XPLOT.........Plots image rows one at a time on the graphics or TV
                 screen.  Rows whose peak value is < PIXVAL are displayed.
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