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Re: get out fit coefficient
Posted:
Nov 14, 2012 9:46 AM


"Nasser M. Abbasi" <nma@12000.org> wrote in message news:k7v2hc$5p5$1@speranza.aioe.org... > On 11/13/2012 8:36 PM, Greg Heath wrote: >> "Paul " <pmcropp@gmail.com> wrote in message >> <k7upda$1n9$1@newscl01ah.mathworks.com>... >>> Is there a way to get out the value for "c1" from my Gaussian fit? >>> >>>>> f >>> f = >>> General model Gauss1: >>> f(x) = a1*exp(((xb1)/c1)^2) >>> Coefficients (with 95% confidence bounds): >>> a1 = 98.03 (85.67, 110.4) >>> b1 = 2.225 (2.225, 2.226) >>> c1 = 0.005062 (0.004324, 0.005799) >>> >>> Thanks. >> >> I don't understand the question. If you have data the estimates are >> >> a1 = max, b1 =mean, c1 = std dev. >> >> Hope this helps >> > > I assumed he meant how to read it from 'f' > > It should just be f.c1 since 'f' looks like a struct.
It's a cfit object from Curve Fitting Toolbox, but that's sufficiently structlike that "f.c1" works.
> It would have helped if OP said how they generated 'f'
My guess is either from the Curve Fitting Tool CFTOOL:
http://www.mathworks.com/help/curvefit/cftool.html
or from the Curve Fitting Toolbox function FIT:
http://www.mathworks.com/help/curvefit/fit.html
 Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com



