| T O P I C R E V I E W |
| paola.bolognesi |
Posted - 05/26/2009 : 05:25:48 AM
Origin Ver.: 7.5 or 8
Operating System: windows vista or XP
How can I fit a set of data using simultaneously multiple (3 for example) asymmetric gaussian profiles ?
Thanks
paola |
| 2 L A T E S T R E P L I E S (Newest First) |
| emily_yu |
Posted - 06/01/2009 : 04:20:20 AM
Hi,
Does the data you have many peaks and you want to use the same function to fit them simultaneously£¿
If yes, I suggest that you can use Peak Analyzer tool.
For more details, you can see our webpage:
http://www.originlab.com/www/helponline/Origin8/en/mergedProjects/Tutorial/Tutorial/Peak_Fitting_with_Preset_Peak_Parameters.html
http://www.originlab.com/www/helponline/Origin8/en/userguide/peak_fit_parameters_dialog.htm
Best regards,
Emily
OriginLab Technical Services |
| emily_yu |
Posted - 05/27/2009 : 05:33:40 AM
Hi,
For asymmetric Gaussian data, maybe you should use Bigaussian function.
Though this function is our build in function, you cannot find in the Nonliear Fitting dialog box easily. You should do the following steps:
1. Select "Tools: Fitting Function Organizer".
2. Expand the "PFW" folder in the left panel, right click the "Bigaussian" and select "Share To" to open a dialog box. In the drop down list, choose "Origin Basic Functions" and then click "OK".
3. Click "Ok" button to close the dialog box.
Then when you open NLFit dialog box, you can find Bigaussian in the Origin Basic Functions category.
What's more, Origin supports you to fit a set of data at one time, for detail, please refer to this webpage:
http://www.originlab.com/www/helponline/Origin8/en/mergedProjects/QuickHelp/QuickHelp/How_do_I_fit_all_curves_in_my_layer_or_graph.html
Best regards,
Emily
OriginLab Technical Services |
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