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 Substrate the non-constant background		  New Topic  Reply to Topic
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bo_liubo

China
13 Posts
Posted - 04/29/2015 :  09:21:00 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin): 8.6
Operating System: windows 7
Hello:
I followed the origin tutorial instructions to fit the data in originlab sample folder(D:\Program Files\OriginLab\Origin \Samples \Spectroscopy\Peaks on Exponential Baseline.dat).I can fully understood the instructions but what can I do to substrate the exponential background and display only the Voigt part?
Thanks a lot!

JacquelineHe

287 Posts
Posted - 04/30/2015 :  05:20:59 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

In our webpage:
http://www.originlab.com/index.aspx?go=Products/Origin/DataAnalysis/PeakAnalysis/BaselineDetection

The sample shows you how to substrate the baseline in Show me button (Baseline Subtraction).

You can do the Baseline Subtraction steps when you use Peak Analyzer to fit peaks. And in Create Baseline Page, you can choose Exponential as the baseline function when Connect by: Fitting (Pro).

Thanks
Jacqueline
Originlab
Edited by - JacquelineHe on 04/30/2015 05:23:45 AM
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snowli

USA
1379 Posts
Posted - 04/30/2015 :  11:07:51 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hello,

When you are following the steps in Tutorial
http://www.originlab.com/doc/Tutorials/PeakFitting-Baseline

In step 7 "Baseline Treatment" page, besides checking "Fit Baseline with Peaks" checkbox, please also check the following two checkboxes.
"Auto Subtract Baseline"
"Auto Rescale button"

Continue the steps to finish the fitting.
The result graph you get will have baseline subtracted.

Thanks, Snow
OriginLab Corp.
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