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 fit a data range		  New Topic  Reply to Topic
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vassilios_1

Germany
4 Posts
Posted - 12/02/2003 :  11:01:26 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
:( I'm trying to fit a selected part of a function curve. Although I use nlsf.dataBegin and nlsf.dataEnd my script uses always the complete x-column --> so the fit result is total rubbish.
Here the code:

[EXECFIT]
nlsf.func$ = cubic;
nlsf.dataBegin= Fstart; //some start value for fitting
nlsf.dataEnd = Fend;
nlsf.xBegin = fxdata[1]; //some start value for plotting the fit
nlsf.xEnd = fxdata[2];
nlsf.cleanupfitdata();
nlsf.fitdata$ = Polyfit_TotMit;
nlsf.xmode = 4;
nlsf.funcx$ = Polyfit_PolyX; //dataset to store
nlsf.funccol$ = Polyfit_PolyY; //dataset to store fitted Y values
nlsf.iterate(20);
nlsf.makecurve(func); //dataset generated for the fitted curve


Has anyone an idea or working code?
Thanks! :)

Mike Buess

USA
3037 Posts
Posted - 12/02/2003 :  12:18:05 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Try moving nlsf.cleanupfitdata() to the beginning of the script.

Mike Buess
Origin WebRing Member
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vassilios_1

Germany
4 Posts
Posted - 12/02/2003 :  12:52:29 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
All right! It solves the problem.
Thanks for your help!
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