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 scripting: how to fit all graphs by exp + gauss?

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sshkrv Posted - 07/02/2014 : 11:15:42 AM
Hello, I got this graphs to approximate them exponentially in region from 600 nanometers(just a tail).
It also contains a gauss(exp+gauss, finally). I have to write a script(or do it manually) that approximates each graph(I've got a lot of them) by a gauss+exp. The problem is that each coefficient(halfwidth, peak, decay and etc) changes in time and I don't get what is going on with exp decay coefficient. Thanks for attention!

ssh
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lkb0221 Posted - 07/08/2014 : 11:07:24 AM
Hi,

Your data is simply Exp and Guass added together?
You can build a user-defined fitting function to fit your data if this is the case.
http://www.originlab.com/doc/Tutorials/UserDef-FitFunc
http://www.originlab.com/doc/Quick-Help/UserDefinedFittingFunction

Zheng
OriginLab

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