comdat

command list , class list , introduction .

 COMDAT -- computes data equivalent to a particular image. This can be
           subtracted from real data to give data residuals. Comdat is
           also useful for simulating data. comdat uses exactly the same
           image to data routine as optscl and memit and should therefore
           give the same chi**2 (for the same image and data).


 FIGARO variables:

 IMAGE     -- The image file to load
 TEMPLATE  -- TRUE if template data file is to be used otherwise the user
              must define pixels sizes etc
 if TEMPLATE

   DATA      -- Data file containing example format data

 else

   NPIX      -- Number of pixels/spectrum        
   NSPEC     -- Number of spectra
   VDATA     -- Velocity km/s/pixel
   WCEN      -- Central wavelength (Angstroms)
   WIDTH     -- Phase width of exposures

 CALC      -- Calculated data file name
 NADD      -- TRUE if noise is to added to data

 if NADD

   CONT      -- Effective continuum for noise computation
   NOISE     -- Signal-to-noise in effective continuum
   ISEED     -- Seed integer to start noise generator if NADD

This command belongs to the classes:


Tom Marsh, trm@phastr.soton.ac.uk, Fri Aug 4 10:02:29 1995 .