GREG

 

        ANALYSE\GREG Name [/FORMATTED]  [/READ [X n] [Y m]

    Writes in file Name the contents of current scan as a GILDAS  table,  or
    as a formatted file if the /FORMATTED option is present.

    If the /READ option is present, performs  the  reverse  operation:  load
    the  file  content  in  the  current  scan. Only available for formatted
    files; the equivalent capability for GILDAS tables is available  through
    a combination of DEFINE IMAGE and MODEL.

    For the table, the information stored is :
        1. Intensity
        2. Channel number
        3. Velocity
        4. Offset frequency
        5. Rest frequency
        6. Image frequency
        7. Fitted profiles if any - fit(i),i=0,nline - in column 7+i
    The output table can be put later in a formatted way using  GILDAS  task
    LIST in you need.

    The table may be used as input to GreG to produce fancy plots, or by the
    GILDAS software for other applications. In particular, SIC variables can
    be used to subtract any  of  the  fits  from  the  spectrum  to  produce
    residuals  if  needed.  For plots, note that you can produce essentially
    the same within CLASS, except  under  very  special  circumstances,  and
    moreover that only CLASS can handle the different X-unit simultaneously.

    For the formatted list, less information is written (and it takes longer
    to write it of course) :
        1. Current X unit in column 1
        2. Intensity in column 2
        3. Fitted profiles - (fit(i),i=0,nline) - in column 3+i

        For the /READ option, columns are X 1 Y 2 by default but can be
        changed. If X 0 is given as zero, then only Y is read and X is
        filled with channel numbers. Only very coarse header information
        is filled in. A lot of complementary header editing will often
        be needed.