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 PFM enquiry--set constraints

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T O P I C    R E V I E W
csuguosheng Posted - 05/31/2007 : 09:55:36 AM
Origin Version (Select Help-->About Origin): 7.5
Operating System:Win XP

I am using PFM to do the multiple-peak fitting. The fitting function I am interested in is the build-in psvoigt1. The parameters are A(area), xc(center), w(FWHM),and mu(shape factor). I want to set some constraints to the peak fitting. I know PFM can do this, though limited to linear constraints. My problem is, how can I set constraints to peak height? Coz "height " is not included in the function parameters. But since I can get height value from the fitting, I suppose there must exist ways to set constraint to peak height. (Right?) But I cannot find how to do this.
The other question is, can I set non-linear constaints?
Thanks a lot!

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