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 NLSF doesn't consider the borders		  New Topic  Reply to Topic
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Malab

Germany
19 Posts
Posted - 04/05/2006 :  03:19:26 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,
if I try the following code, the border (myvarstart and myvarend) will not be considered. It takes always the whole dataset! I can not find a mistake. Maybe the order of the commands?

Thank you for help


nslf.begin();
nlsf.init();
nlsf.cleanupfitdata();
nlsf.func$="lorentz";
nlsf.numreplica=0;
nlsf.pastetoplot=1;
nlsf.datastep=1;
nlsf.pastetoplot=1;

nlsf.databegin=MyVarStart;
nlsf.dataend=MyVarEnd;
nlsf.fitdata$=inp$(wksi)_Y$(i);


nlsf.p1=0;
iii=1;
nlsf.p$(iii)=MyVarCenter$(iPeak); //some Var
iii++;
nlsf.p$(iii)=MyVarWidth$(iPeak); //some Var
iii++;
nlsf.p$(iii)=29000;


nlsf.iterate(Iter);
nlsf.iterate(Iter);
nlsf.iterate(Iter);

nlsf.end();



Origin Version: 6.0G
Operating System: Win2000

easwar

USA
1965 Posts
Posted - 04/06/2006 :  09:21:28 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Malab,

The properties you were using, nlsf.databegin, and nlsf.dataend are the correct ones, if what you are trying to do is to restrict the fit to a certain range of the data.

Note that these properties refer to the row number and not the x values - perhaps that was the problem?

I tried your script (with some lorentz data and some fixed values for parameters instead of your variables) and it worked fine in 7.5.

Easwar
OriginLab
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Mike Buess

USA
3037 Posts
Posted - 04/06/2006 :  3:59:48 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
It appears that nlsf.fitdata$ must be defined before nlsf.databegin|dataend in 6.0. This will fit over the desired range and create a fit curve for the same range. (Leaving out the nlsf.xBegin|xEnd|xMode commands will perform the proper fit but create a curve over the full range.)

%P=inp$(wksi)_Y$(i);
%A=xof(%P);
nslf.begin();
nlsf.init();
nlsf.cleanupfitdata();
nlsf.func$="lorentz";
nlsf.numreplica=0;
nlsf.pastetoplot=1;
nlsf.datastep=1;
nlsf.pastetoplot=1;

nlsf.fitdata$=%P;
nlsf.databegin=MyVarStart;
nlsf.dataend=MyVarEnd;
nlsf.xBegin=%A[MyVarStart];
nlsf.xEnd=%A[MyVarEnd];
nlsf.xMode=1;

nlsf.p1=0;
iii=1;
iii++; // next parameter is p2!
nlsf.p$(iii)=MyVarCenter$(iPeak); //some Var
iii++;
nlsf.p$(iii)=MyVarWidth$(iPeak); //some Var
iii++;
nlsf.p$(iii)=29000;

nlsf.iterate(Iter);
nlsf.iterate(Iter);
nlsf.iterate(Iter);

nlsf.end();

Mike Buess
Origin WebRing Member

Edited by - Mike Buess on 04/06/2006 4:18:26 PM
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