LINES

 

        ANALYSE\LINES [N] [/NOCURSOR] [/INPUT File_Name]

    Enter the initial values for the profile fit.   If  argument  "AUTO"  is
    given  instead  of  a number, then the number of lines found in the last
    read spectrum will be used for ITERATE command.

    If N is not specified, then the last value for N is used.  If  N  is  0,
    GAUSS  will  attempt  to  guess  initial  values  for  a  single line by
    computing the moments of the spectrum.  If N is not 0, LINES prompts for
    the initial values for line parameters. These values should be separated
    by spaces and can be entered as SIC expressions as follows:
         Code, Value,     Code, Value,     Code, Value,     Code, Value
      for GAUSS method
         -Temperature-     -Position-        -Width-
      for SHELL method
         -Area (K.MHz)-    -Position-      -Width (MHz)-    -Horn/Center-
      for NH3 method
         -Temperature-     -Position-      -Width (km/s)-     -Opacity-

    The code is an integer interpreted as follows :
            0       adjustable parameter
            1       fixed parameter
            2       adjustable parameter (head of group)
            3       parameter fixed with respect to parameter coded 2 or 4
            4       fixed parameter (head of group)
    Codes 2 3 and 4 are used to fit dependent lines (e.g. HCN, for which the
    displacements  are  4.842  and -7.064 km/s, or -1.431 and 2.088 MHz, and
    line ratios 1:0.6:0.2). Codes 0 and 1 only are allowed for  NH3  method.
    The  value for a parameter with code 3 should be either the ratio to the
    head of group value (for both intensity and width), or the  offset  from
    head of group (for the position).

    If the cursor is on, you will have to define the  boundaries  of  the  N
    lines.  The  program  then  computes  the moments of the spectra between
    these boundaries as input values. You cannot change the  codes  in  this
    way  which  is  meaningfull  ONLY  FOR  FREE and INDEPENDENT lines. This
    cursor selection is not used if you specify the /NOCURSOR option.

    Guesses can be read from  an  input  file  using  the  /INPUT  File_Name
    option. "Free" format is used to read in this input file. The first line
    must contain the number of  lines,  others  are  as  the  input  at  the
    keyboard.

    Command LINES is not supported for method CONTINUUM.