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NLFIT output multiple curves

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JulienZ

France
1 Posts

Posted - 03/06/2013 : 05:08:38 AM

Origin Ver. and Service Release : 8.1SR3
Operating System:Windows XP 64bit

Hi there,
I am looking for a way to get several curves output after running a user defined NLFIT function in pretty much the same way that you get each individual peak as well as the fitted curve after a multiple peak fit (of course in my case each "contribution" curve is different so the multiple peak Fit option is out).

I believe I should define a "Script after fitting" to retrieve the parameters determined by the fit (GetFitresultsParameters), calculate each curve of interest, send these to worksheet columns and graph those.
While I know some C programming I am not familiar with LabTalk and the examples and the description of functions does not help much.
So before I start working on that could someone weight in on wether this is the right approach ?
Then I'll start looking for examples for each individual task the script should perform...

Thanks in advance for your input,

greg

USA
1378 Posts

Posted - 03/29/2013 : 10:20:25 AM

Your version does have a Script After Fitting section on the Code tab of NLFit so you are on the right track.
The script should start with:

getresults tr:=MyResults iw:=__REPORT$;

which will get the parameters of the fit into the MyResults tree.
After that you will probably find these useful:
newsheet, wks.AddCol(string) and plotxy
as well as a good understanding of Range Notation
http://wiki.originlab.com/~originla/ltwiki/index.php?title=LabTalk:Range_Notation

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