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natpeart
USA
2 Posts |
 Posted - 11/10/2012 : 7:11:06 PM
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Origin Ver.8.6 and SR3 Operating System: Windows 7 / 64
After resolving two overlapping signals in a spectrum, (after peak fitting), how can I integrate the area under the curve of each band separately?
Thanks a lot,
Nat
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Hideo Fujii
USA
1582 Posts |
Posted - 11/13/2012 : 10:34:06 AM
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Hi Nat,
If you used Peak Analyzer(PA) in OriginPro, each peak curve's area is reported in the
"PeakProperties" report (worksheet tab) in the workbook such as area in whole curve ("Area Fit"),
area in fitting range("Area FitT"), or its percentage ("Area FitTP") as well as the FWHM.
(See http://www.originlab.com/www/helponline/Origin/en/UserGuide/Peak_Analyzer,_Fit_Peaks_Page.html
or the help section: UserGuide> Peak Analyzer> PA Reference> PA Fit Peaks Page
If you got your peaks by Multiple Peak Fit tool, your graph contains the individual
peak plots in addition to the cumulative plot. So, you can run Integrate gadget
on the graph, and you can get each area by setting the area range and the input data
(by pressing the triangle button for options, and select "Change Data" flyout).
You get the area instantly.
Hope the above appoach helps.
--Hideo Fujii
OriginLab
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ks0297
USA
10 Posts |
Posted - 05/02/2013 : 7:08:46 PM
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I am using Origin8. My question is there are Area Fit,Area FitT and Area FitTP in the report. For example I have ran the PA and did fitting. the values for area I have are:
Area Fit=3.44148;Area FitT=3.43657;Area FitTP=80.1524
How that FitTP is in percentage, please help to understand.
Whcih are is the correct one to move ahead with my further calculations. Please answer ASAP.
Thanks
KS
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matthew@originlab.com
73 Posts |
Posted - 05/03/2013 : 2:58:44 PM
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Hi,
The Area Fit value (3.44148) is the area under the entire curve contributing to that peak.
The Area FitT value (3.43657) is the area under the curve contributing to that peak only within the fitting range which the Peak Analyzer determined.
The Area FitTP value (80.1524) is a percent representing the area under the curve contributing to that peak out of the entire area under the original curve which you used Peak Analyzer to analyze within the fitting range. In other words, if the Peak Analyzer only found 1 peak, but this value was 80%, then 80% of the area under the original curve was within the fitting range.
So all of these values are correct, it just depends what you are looking for. How many peaks did the Peak Analyzer find?
Matthew
OriginLab |
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ks0297
USA
10 Posts |
Posted - 09/15/2013 : 12:52:16 AM
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Basically I am having 6 or 7 peaks to fit
KS |
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Integration