next up previous contents index
Next: LMV Up: ANALYSE Language Internal Help Previous: FILL   Contents   Index


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

    Writes in file Name the contents of R buffer 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 R buffer. Only available for  formatted  files;  the
    equivalent  capability for GILDAS tables is available through a combina-
    tion 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
    Line #0 means sum of all lines. Then all lines are written individually.
    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 residu-
    als  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

    The /FORMATTED option can be passed a custom Fortran format, e.g. to ex-
    tend    the    number   of   digits   in   each   column.   Default   is
    "(1PG17.9,7(1PG12.4))". Do not forget to provide the enclosing parenthe-
    ses and as many specifications as the number of columns (up to 8 depend-
    ing on the number of line fits). For example "(F15.6,1X,F15.4)" is valid
    if no line fit is available.

    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  chan-
    nel  numbers. Only very coarse header information is filled in. A lot of
    complementary header editing will often be needed.

Gildas manager 2020-10-13