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mohamed1986
43 Posts |
 Posted - 03/22/2014 : 5:11:33 PM
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Origin Ver. and Service Release (Select Help-->About Origin):
Operating System:
Hello friends,
I have two peaks overlapped in one peak like the attached photo. Kindly I want a method to separate a broad peak (which results from overlapping the two peaks) to its original peaks.
Thanks much
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Edited by - mohamed1986 on 03/22/2014 5:17:02 PM |
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JacquelineHe
287 Posts |
Posted - 03/24/2014 : 03:52:23 AM
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Hi,
I suggest you can try to use the 2nd Derivative (Search Hidden Peaks) in Peak Analyzer tool to find the two peaks.
About how to find peaks in Peak Analyzer, please refer to these help pages:
http://www.originlab.com/doc/Origin-Help/FindPeak-PA
http://www.originlab.com/doc/Tutorials/Pick-Mark-Peaks
If this 2nd Derivative (Search Hidden Peaks) feature is not helpful, would you mind to send your project file to us <tech@originlab.com>, so that we could try to find peaks for you? And is data from the IR spectroscopy or other instruments?
In the email, please show us your detailed version and serial number information? You can check it by selecting Help: About Origin in the menu.
Thanks
Jacqueline
OriginLab |
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Hideo Fujii
USA
1582 Posts |
Posted - 03/24/2014 : 10:11:16 AM
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Hi,
To find hidden peaks at different positions, Jacqueline's search method by the 2nd derivative is a good way.
In addition, if the peaks coincide at the same position, as no bending at all seemingly as in your curve, you can simply share the peak center(Xc) parameters of two (or more as you consider) curves.
In the sample below (two Gaussian case, not scaled), I defined two peaks at the Find Peaks step in Peak Analyzer manually, then I shared xc_1 and xc_2 in the Fit Peaks page (from the Peak Fit Parameters dialog).
Hope this also helps.
--Hideo Fujii
OriginLab |
Edited by - Hideo Fujii on 03/24/2014 10:14:41 AM |
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Separation of peaks