fitnlm not working on mac

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Stephan Koehler
Stephan Koehler 2014-6-24
%I simply copied this sample script for fitnlm
load carbig
ds = dataset(Horsepower,Weight,MPG);
modelfun = @(b,x)b(1) + b(2)*x(:,1).^b(3) + ...
b(4)*x(:,2).^b(5);
beta0 = [-50 500 -1 500 -1];
mdl = fitnlm(ds,modelfun,beta0)
%and got this error:
Error using nlinfit
Too many input arguments.
Error in NonLinearModel/fitter (line 1118)
[model.Coefs,~,J_r,model.CoefficientCovariance,model.MSE,model.ErrorModelInfo,~]
= ...
Error in classreg.regr.FitObject/doFit
(line 220)
model = fitter(model);
Error in NonLinearModel.fit (line 1421)
model = doFit(model);
Error in fitnlm (line 94)
model = NonLinearModel.fit(X,varargin{:});
  1 个评论
Geoff Hayes
Geoff Hayes 2014-6-24
It could be that the sample script you copied (from where?) is valid for a different version of the fitnlm function. When you type doc fitnlm (in the Command Window) does the help details include an example similar to what you have tried already?

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