AIPS NRAO AIPS HELP file for UNSPX in 31DEC25



As of Mon Dec 9 13:47:49 2024


UNSPX: Removes spectral index model from a data cube

INPUTS

INNAME                             Input image name (name)
INCLASS                            Input image name (class)
INSEQ             0.0     9999.0   Input image name (seq. #)
INDISK            0.0        9.0   Input image disk unit #
OUTNAME                            Output image name (name)
OUTCLASS                           Output image name (class)
OUTSEQ           -1.0     9999.0   Output image name (seq. #)
OUTDISK           0.0        9.0   Output image disk unit #.
IN2NAME                            Model SPIX name (name)
IN2CLASS                           Model SPIX name (class)
IN2SEQ            0.0     9999.0   Model SPIX name (seq. #)
IN2DISK           0.0        9.0   Model SPIX disk unit #
IN3NAME                            Model SPCU name (name)
IN3CLASS                           Model SPCU name (class)
IN3SEQ            0.0     9999.0   Model SPCU name (seq. #)
IN3DISK           0.0        9.0   Model SPCU disk unit #
BLC                                Bottom left corner of input
TRC                                Top right corner of input
DOBLANK                            > 0 keep input value when
                                   model is blanked,
                                   <= 0 blank output pixel
BADDISK                            Disk to avoid for scratch

HELP SECTION

UNSPX
Task:  Takes the output of SPIXR and applies it to the input image
       to create a spectral index corrected image.  The input
       image can be in FXY or XYF transposition.  If BLC and/or
       TRC were used in SPIXR, they must be used here also with
       the same values.  With BLC and TRC be careful if yourinput
       is in XYF transposition, since FXY is required in SPIXR.

       The output Tout(xy) = Tin(xyf) * Fmod(x,y,f)
       where
            log(Fmod(x,y,f)) = S(x,y) log(f/f0) +
               C(x,y) (log(f/f0))^2
       with f0 being the reference frequency used in SPIXR and
       found in the FREQ value of the model images.  The SPIX
       image is S(x,y), and SPCU (if any) is C(x,y).
Adverbs:
  INNAME.....Input image name (name).     Standard defaults.
  INCLASS....Input image name (class).    Standard defaults.
  INSEQ......Input image name (seq. #).   0 => highest.
  INDISK.....Disk drive # of input image. 0 => any.
  OUTNAME....Output image name (name).    Standard defaults.
  OUTCLASS...Output image name (class).   Standard defaults.
  OUTSEQ.....Output image name (seq. #). 0 => highest unique.
  OUTDISK....Disk drive # of output image.  0 => highest
             number with sufficient space.
  IN2NAME....Model SPIX name (name).     Standard defaults.
  IN2CLASS...Model SPIX name (class).    Standard defaults.
  IN2SEQ.....Model SPIX name (seq. #).   0 => highest.
  IN2DISK....Disk drive # of model SPIX. 0 => any.
  IN3NAME....Model SPCU name (name).     ' ' => none
  IN3CLASS...Model SPCU name (class).    Standard defaults.
  IN3SEQ.....Model SPCU name (seq. #).   0 => highest.
  IN3DISK....Disk drive # of model SPCU. 0 => any.
  BLC........Bottom right corner in input image of desired
             subimage.  Default is entire image.
  TRC........Top right corner in input image of desired
             subimage.  Default is entire image.
  DOBLANK....> 0 => keep the input pixel value unchanged when
                    the model image pixel is blanked
             <= 0 => Blank the output pixel when the model
                    image pixel is blanked
  BADDISK....Disk drives to avoid for scratch files.

EXPLAIN SECTION


AIPS