ERRCON-Converts percentage error values to absolute values

Description:

At one stage in their development, Figaro routines held error data as percentage values. This was a bad idea, and all the routines were converted to use absolute error values. ERRCON converts a file with percentage errors into one with absolute errors. It should only be needed for old data files written by the old (%) versions of the various Figaro routines.

Parameters:

SPECTRUM

The name of a file that contains an error array whose values are expressed as a percentage of the data values.

OUTPUT

The name of the resulting file, with the error array containing absolute error values. If OUTPUT is the same as SPECTRUM (the default) the operation will be performed in situ. Otherwise a new file will be created.

Source comments:

 E R R C O N

 Converts a Figaro file that has an error array containing
 percentage errors into one that has absolute values in the
 error array.  This is needed because of the ill-thought-out
 use of percentage errors at one stage in Figaro.

 Command parameters -

 SPECTRUM  (Character) The name of the file to be converted.
           This will usually be a spectrum, but data of any
           dimension will be accepted.

 OUTPUT    (Character) The name of the resulting file. This
           can be the same as for SPECTRUM. If not, a new
           structure is created, with everything but the error
           array a direct copy of the input.

                                  KS / AAO. 21st July 1986