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 multipeak fitting

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T O P I C    R E V I E W
l203 Posted - 06/26/2006 : 11:21:27 AM
Origin Version (Select Help-->About Origin): 7.5 (demo)
Operating System:windows xp
I am trying to fit two lorentzians to some data that I have, then subtract those two from the data, and fit 2 more. I can't get the Lorentz curves to show up by using the advanced fitting tool. Any help would be greatly appreciated.

Thanks,
Eric
3   L A T E S T    R E P L I E S    (Newest First)
l203 Posted - 06/27/2006 : 09:57:42 AM
Thanks Larry, I got it taken care of, it turns out i was allowing too many parameters to vary.

Thanks,
Eric
larry_lan Posted - 06/27/2006 : 04:08:12 AM
Hi Eric:

Can you try 'Analysis --> Fit Multi-Peaks --> lorentzian' tool to fit your data? And you can specify the peaks you want to fit in this tool.

Larry
OriginLab GZ Office
l203 Posted - 06/26/2006 : 11:33:48 AM
allow me to clarify, I can get one of them to fit decently, but the other one looks like a straight line basically

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