% @(#)createspc2.hlq	19.1 (ESO-IPG) 02/25/03 13:24:38 
%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
%.COPYRIGHT  (c)  1990 European Southern Observatory
%.IDENT      createspc2.hlq
%.AUTHOR     FM, IPG/ESO
%.KEYWORDS   MIDAS, help files, CREATE/SPC2
%.PURPOSE    On-line help file for the command: CREATE/SPC2
%.VERSION    1.0  07-SEPT-1986 : Creation, FM
%----------------------------------------------------------------
\se
SECTION./SPC2
\es\co
CREATE/SPC2						07-SEPT-1986  FM
\oc\su
CREATE/SPC2 image [period] [slope] [phase] [dimension]
	generate a discrete 1-dimensional image
\us\pu
Purpose:   
           Generate a discrete 1-dimensional image with an arbitrary periodic
           pattern.  For a period, p, p values are read in (or defaulted) to
           give the flux values of p successive pixels.  Optionally, the
           periodic pattern can be superimposed on a constant slope.
\up\sy
Syntax:    
           CREATE/SPC2 image [period] [slope] [phase] [dimension]
\ys\pa
           image     = the output image name,
\ap\pa
           period    = integer value between 1 and 20 (default = 10),
\ap\pa
           slope     = real slope of the image (default = 0.0); flux added to
                       the periodic pattern in the I'th image pixel is
                       slope*I,
\ap\pa
           phase     = integer denoting the sequence number of the pattern
                       element which goes into the first pixel of the image
                       created (default = 1),
\ap\pa
           dimension = dimension of the output image (default = 128).
\ap\no
Note:      
           Keyword RIPVALS may be initialised prior to calling SPEC2,
           with p (period) integer values which will define the image;
           or, alternatively, if this is not done, use the default period
           (i.e. 10) and the default wave definition (i.e. 4,5,6,3,2,7,1,
           4,5,0).
\on\exs
Examples:
\ex
           WRITE/KEY RIPVALS/I/1/11 4,5,6,3,2,2,1,4,5,6,0
\xe\ex
           CREATE/SPC2 outim  11
\xe \sxe
