% @(#)fit_dire.hlq	10.1 (ESO-IPG) 8/7/95 18:19:34
% @(#)fit_dire.hlq	8.1 (ESO-IPG) 11/28/94 10:28:14
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%.COPYRIGHT  (c)  1993 European Southern Observatory
%.IDENT      fit_dire.hlq
%.AUTHOR     PB, IPG/ESO
%.KEYWORDS   MIDAS, help files, 
%.PURPOSE    On-line help file for the command: FIT/DIRECT
%.VERSION    1.0  23-NOV-94 : Creation, PB
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SECTION./DIRECT
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FIT/DIRECT					      23-NOV-94  PB
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FIT/DIRECT  [spec] [outtab] [log] [session] [graph (Y/N)]
	Fits a set of absorption lines    
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Purpose:    
            This command performs a single  fit of absorption lines in a 
	    spectrum, without any interaction with the user. 
            The lines to be fitted and all the relevant parameters are stored
            in three tables, in the format used by FIT/LYMAN.
            This command is designed for the user who,  having previously 
            defined a line configuration using FIT/LYMAN, wants to perform a 
            fit without  re-entering in the program, either after direct 
	    modification of some input tables, or of a different spectrum\\ 
	    When a non-interactive fit of different line systems is needed, 
            use command BATCH/LYMAN.
	    
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Syntax:     
            FIT/DIRECT   [spec] [outtab] [log] [session] [graph (Y/N)]
 \\
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            spec   = table with input spectrum \\
                     Must contain at least 4 columns: 
		     :WAVE,:NORMFLUX,:STDEV,:FWHM.\\
                     default: last file used 
		     (i.e. that stored in SPECTRUMTABLE descriptorof LYPAR.tbl)
 \\
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            outtab = table with result of fitting procedure\\
                     default: last file used 
		     (i.e. that stored in OUTTAB descriptorof LYPAR.tbl)

  \\
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	    log    = name of log tables, where a record of the fitting 
		     operations is kept.\\
                     default: last file used 
		     (i.e. that stored in LOGNAME descriptorof LYPAR.tbl)

  \\	
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	    session = name of an older session of FIT/LYMAN for the 
		      definition of lines\\
	              By default, the current session is used (i.e. the values
	              stored in the tables LYPAR, LYLIM and LYMIN)
  \\	
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	     graph   =  Flag for plot of fitted lines. Default is N
\\
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See also: 
            FIT/LYMAN,BATCH/LYMAN,
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