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thitchen
44 Posts |
 Posted - 05/09/2012 : 4:44:30 PM
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Origin Ver. 8.6.0 and Service Release 2 (Select Help-->About Origin):
Operating System: win7 prof.
Hi,
I have plenty of graphs with each having ~10 curves. How can I do the 2 Gaussian peaks fitting for each curve and save the resulting parameters, i.e. peak position, width, and height etc. for each curve in a new workbook? I'm expecting some Loop command can do this kind of job. Thanks in advanced.
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Kathy_Wang
China
159 Posts |
Posted - 05/10/2012 : 05:51:11 AM
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Hi,
You may try the batch processing. Basically you create an analysis template of NLFit and then use this template to analyze your other data.
Here I provide an example on how to use this method:
A.Creating an Analysis Template
1) import ..Samples\Curve Fitting\Multiple Gaussians.dat, by "File:Import:SingleASCII";
2) select Column B and choose "Analysis : Fitting : Nonlinear Curve Fit : Open Dialog" from the menu (or press Ctrl+Y)
3) choose "Function : Gauss", go to "Advanced", open "Replica" branch to set replica to 1 for 2 peaks, you may do other settings if you want.
4) click Fit
5) on the FitNL1 Report sheet, right-click on the word Parameters above the parameter table and choose "Create Copy as New Sheet"
6) rename the new sheet something such as "Results"
7) delete any columns you won't need
8) choose "File : Save Workbook as Analysis Template" and give it a descriptive name such as "My Gauss Results"
B. Using the Analysis Template-Many Columns
1) make your original worksheet active
2) select columns B,C,D and E
3) select "File : Batch Processing" from the menu
4) select "Repeatedly Import into Active Analysis Template Window" for Batch Processing Mode, or you can load the template by your own
5) select "Data Source : Use Existing XY Datasets"
6) set Data Sheet as the original sheet and Result Sheet as the one you created. (This should be the case already if you follow the instructions above.)
7) click OK
And you should then have one worksheet containing all your fitting results.
Hope this information helps!
Kathy
Originlab |
Edited by - Kathy_Wang on 05/10/2012 06:00:38 AM |
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thitchen
44 Posts |
Posted - 05/10/2012 : 5:45:12 PM
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Thanks, Kathy.
But what do you mean by "select columns B,C,D and E" in step 2)of "B. Using the Analysis Template-Many Columns"?
And is there a way that I can specify the baseline and peak positions?
Because, those curves share the same baseline and almost the same peak positions.
Many thanks.
quote:
Originally posted by Kathy_Wang
Hi,
You may try the batch processing. Basically you create an analysis template of NLFit and then use this template to analyze your other data.
Here I provide an example on how to use this method:
A.Creating an Analysis Template
1) import ..Samples\Curve Fitting\Multiple Gaussians.dat, by "File:Import:SingleASCII";
2) select Column B and choose "Analysis : Fitting : Nonlinear Curve Fit : Open Dialog" from the menu (or press Ctrl+Y)
3) choose "Function : Gauss", go to "Advanced", open "Replica" branch to set replica to 1 for 2 peaks, you may do other settings if you want.
4) click Fit
5) on the FitNL1 Report sheet, right-click on the word Parameters above the parameter table and choose "Create Copy as New Sheet"
6) rename the new sheet something such as "Results"
7) delete any columns you won't need
8) choose "File : Save Workbook as Analysis Template" and give it a descriptive name such as "My Gauss Results"
B. Using the Analysis Template-Many Columns
1) make your original worksheet active
2) select columns B,C,D and E
3) select "File : Batch Processing" from the menu
4) select "Repeatedly Import into Active Analysis Template Window" for Batch Processing Mode, or you can load the template by your own
5) select "Data Source : Use Existing XY Datasets"
6) set Data Sheet as the original sheet and Result Sheet as the one you created. (This should be the case already if you follow the instructions above.)
7) click OK
And you should then have one worksheet containing all your fitting results.
Hope this information helps!
Kathy
Originlab
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Edited by - thitchen on 05/10/2012 6:11:23 PM |
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Kathy_Wang
China
159 Posts |
Posted - 05/11/2012 : 01:43:53 AM
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For the first question,
The step "select columns B,C,D and E" of "B. Using the Analysis Template-Many Columns" means that we select this data range and intend to do the same analysis for those columns. It is just an example.
In fact, you may also do the data selection in the Batch processing dialog, that you first choose a type of "Data Source", which can be either "Import From Files" or "Use Existing XY Datasets" , and then specify other files, or other columns in current workbook you want to analyze.
For the second one,
If you would like to specify baselines and peak positions, you could use the Peak Analyzer tool, which you can open from top menu "Analysis:Peaks and Baseline:Peak Analyzer". This tool will help you to analyze with baseline and find your peaks. You may find some detailed information in the following page:
http://www.originlab.com/www/helponline/Origin/en/Category/Peak_Analyzer.html
Kathy
Originlab |
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multiple curves 2 gaussian peaks fitting