curvefit

           perform fit process with IDL CURVEFIT

           cafe

           curvefit [,iterations][,/selected]

           iterations - (optional) Number of iterations to perform
                         before query to prolong.

           selected   - Apply fit to selected data points only.

           All options may be set with the "set" command. The
           command prefix is "curvefit".

           Seems to produce better hessian errors but may fail to
           converge if data errors are not estimated properly.
           Tied/bound parameters are not supported. It is recomended
           to use the fit command instead which uses the mpfit
           library.
           This command was added for cases in which the mpfit
           library is not available but the cafe environment should be
           used nevertheless.

           Changes parameter values/errors in environment
           according fit result.

           > model, "sin+lin", 2
           > curvefit
                 -> fit result

           $Id: cafe_curvefit.pro,v 1.12 2003/11/05 15:10:44 goehler Exp $

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