How do I print/save parameters from fitnlm?

Hello, my main objective is to run several excel arrays through a gaussian function and I would like to export certain information including the values from the fitnlm parameters because these correspond to things like peak phase shift and amplitude.

Ideally, each of these arrays will generate a plot of the fit vs. the actual data. It would be awesome to print each of these to an excel sheet with the parameter data I'm after. Is there any way to do those things? Thanks!

Answer 1

[Walter Roberson]

The output of fitnlm is a nonlinear model object. See http://www.mathworks.com/help/stats/nonlinearmodel-class.html

"To obtain any of these columns as a vector, index into the property using dot notation. For example, in mdl the estimated coefficient vector is

beta = mdl.Coefficients.Estimate "

[Anjodenunca]

Okay I think I understand what you're saying. I apologize, I'm pretty inexperienced with matlab. So if I wanted to assign p(1) to a function from the following model g:

Nonlinear regression model:
    y ~ p1*exp(( - 1*(nm - p2)^2)/((2*p3^2)))

Estimated Coefficients:
           Estimate       SE       tStat       pValue   
          __________    _______    ______    ___________

      p1    5.1879e+05     5667.1    91.544    5.2609e-164
      p2        591.95    0.44573      1328              0
      p3        35.363    0.44828    78.887    1.4976e-151

I would use something like beta = g.Coefficients.Estimate which gives beta =

   1.0e+05 *

    5.1879
    0.0059
    0.0004

But I don't really know how to store these numbers as functions, and it seems as though they've been rounded a bit..

Update: Nm I totally got it, beta(1), beta(2), beta(3).

Thanks much for your help!