MINIMIZE

##
MINIMIZE

            FIT\MINIMIZE [/NOCHECK BASELINE]

        Performs a fit of a theoretical profile in the R spectrum using  initial
        values  specified by the command LINES. The profile is determined by the
        METHOD command (GAUSS, SHELL or NH3 lines are currently implemented, and
        a special method, CONTINUUM, may be used for continuum data).

        MINIMIZE  performs  the fit only on the part of the spectrum selected by
        SET MODE X. It also ignores the regions under the masks defined  by  SET
        MASK.

        If  LINES  is 0, an attempt to guess initial values for a single line is
        done by computing the moments of the spectrum.  A first minimisation  is
        performed  using the Simplex technique; the results are improved and the
        uncertainties computed using the Gradient technique. If MINIMIZE did not
        converge,  the  errors  quoted  in  the results are meaningless, and you
        should use command ITERATE to try to do better.

        In the fit result output, the fit is said:
          - "optimistic" if R%HEAD%GAU%RMS_BASE > R%HEAD%GAU%RMS_LINE * 1.5,
          - "bad" if R%HEAD%GAU%RMS_BASE < R%HEAD%GAU%RMS_LINE / 1.5
        where RMS_LINE and RMS_BASE  are  the  RMS  of  residuals  on  the  line
        range(s)  and  the  remaining base, respectively. This comment is purely
        informative.

        For CONTINUUM method, although a linear  baseline  is  fitted  with  the
        gaussian,  only  the gaussian parameters are displayed.  If the observa-
        tion was made using beam-switching method and the reference beam appears
        in the drifts, a two-component gauss fit is done using separation speci-
        fied in the data.

        The fitting results are saved in the R% variable, for e.g. reuse in pro-
        cedures:
          Method      Structure
          GAUSS       R%HEAD%GAU%
          SHELL       R%HEAD%SHE%
          NH3/HFS     R%HEAD%HFS%
          ABSORPTION  R%HEAD%ABS%
          CONTINUUM   R%HEAD%POI%
        See subtopic for details.

Subsections

- MINIMIZE GAUSSIAN
- MINIMIZE SHELL
- MINIMIZE HFS
- MINIMIZE CONTINUUM
- MINIMIZE /NOCHECK