Documentation on imtab

Task: imtab
Purpose: Tabulate image data
Categories: map analysis

        IMTAB is a Miriad task which tabulates selected regions of
       an image in a format suitable for programs like UVGEN. 
       Different output modes can be selected:

       The UVGEN format outputs, in (8f10.4) format:
           FLUX,DRA,DDEC,WMAJ,WMIN,WPA,POLN,POLPA
       where the last 5 parameters are set to 0.0. DRA and DDEC are
       given in arcsec w.r.t. the reference pixel if the axis
       type is a recognized astronomical one.

        The NEMO format outputs, in (3g16.9) format:
           DRA, DDEC, FLUX

Key: in
     The input file name. No default.

Key: region
     The region of interest of the input. Default is the entire input.
     Full region specifations are supported.
   * Note: 3D datacubes do not display their 3rd coordinate.

Key: clip
     Only tabulate scaled (see SCALE=) image data above the clip value. 
     Default: all data.

Key: scale
     Scale factor with which the image data is multiplied
     before output and clip test (see CLIP=). Default:  1.0.

Key: mode
     Output mode. Currently accepted are: uvgen, nemo.
     Default: nemo.

Key: format
     Override the default mode-dependant output format. Default: none.
     Note: The format specification must be a legal fortran
     format, including the parenthesis; e.g. ``format=(3F20.10)''

Key: units
     Units of the output axes. Valid options are absolute and relative
     (with respect to the reference pixel).
     If an axis is a known astronomical coordinate system, the units are
     displayed in arcsecs.
     Default: relative.

Key: log
     The output log file. The default is the terminal.