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SETFITPARM

SETFITPARM

Name


  SetFitParm.pro

Author


F.Bringezu, denet - Internetservice, Halle Germany,
bringezu@denet.de

Purpose


  Provide a widget interface for creating a parinfo structure.
  This parinfo structure can by used by mpfit routines of Craig B. Markwardt.

Major Topics


  Widget, mpfit.

Calling Sequence


  parinfo=SetFitParm(used_parinfo)

Description



  SetFitParm creates PARINFO using a widget interface.
  PARINFO provides constraints for paramters used by the mpfit routines.
  PARINFO is an array of structures, one for each parameter.
  A detailed description can be found in the documentation of mpcurvefit.pro
  This routine creates an array that contains a structure for each element.
  The structure has the following entries.
  - VALUE (DOUBLE): The starting parameter
  - FIXED (BOOLEAN): 1 fix the parameter, 0 don't fix it at the
    point given in VALUE.
  - LIMITS (DBLARRAY(2)): Set upper and lower limit.
  - LIMITED (BOOLEAN ARRAY 2): Fix the limit.
  The parameter OLDPARINFO is optional. OLDPARINFO is used to set
  the default values in the widget.
  You can simply run:
  test=SetFitParm() to create the array for the first time.
  Once the array is created it can be used to set the default values
  in the widget by calling
  test2=SetFitParm(test)

Inputs


Optional Inputs



  OLDFITPARM - The default values of the new array

Input Keyword Parameters



  PARENT - if this widget is to be a child, set this keyword to the
            parent widget ID.

Output Keyword Parameters



  CANCEL - if the user selected the cancel button on the SETFITPARM
            widget, then this keyword will be set upon exit.

Outputs


  PARINFO array of structures

See Also


  mpcurvefit

Modification History


  Written, FB, 12/1999
  Documented, FB, Jan 2000
  Generalized positioning code, CM 01 Feb 2000



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