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basarir
USA
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 Posted - 11/08/2006 : 4:37:16 PM
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Origin Version (Select Help-->About Origin): Origin 7 SR4
Operating System: Win 98
Greetings,
I am pretty new to Origin C programming. I wrote a pretty simple script for Lorentzian fitting and I can extract the parameter values(Offset, Center, Width and Area) and std's very well, using nlsf.pn and nlsf.en respectively.
However, I can not get the result for the Height value.
Is there a way to retract that and its std from the NLSF?
Thank you
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zachary_origin
China
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Posted - 11/08/2006 : 9:14:54 PM
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For Height, you can use this function after you get the value of Center: double Data_table(double dX, Dataset* pdsYdata, Dataset* pdsXdata = NULL). In your case, the code will be something like this:
Dataset pdsYdata("Lorentzian_b"); // assume the second column of the workbook named Lorantzian is the Y dataset
Dataset pdsXdata("Lorentzian_a");// assume the first column of the workbook named Lorantzian is the X dataset
double dX = nlsf.p2;
double dPeakHeight = Data_table(dX, &pdsYdata, &pdsXdata);
Zachary
OriginLab Technical Services.
Edited by - zachary_origin on 11/08/2006 9:26:59 PM |
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erica-cn
China
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Posted - 11/08/2006 : 9:16:27 PM
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Hi Onur Basarir
To get the result for the height value, you can try to calculate from the Lorentzian function. as follows:
Any more information, please feel free to contact us.
Erica Shang
OriginLab Technical Service
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larry_lan
China
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Posted - 11/08/2006 : 9:37:40 PM
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To calculate the error of H, you can use the following error propagation rule:
Larry
OriginLab Technical Services |
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basarir
USA
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Posted - 11/09/2006 : 10:14:05 AM
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Thanks a lot for your fast replies Zachary, Erica and Larry
These were what I was looking for.
Onur |
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Lorentzian Fitting using NLSF