Passing extra arguments to `nlinfit` function

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Pankaj 2018-7-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/411160-passing-extra-arguments-to-nlinfit-function

编辑： Pankaj 2020-8-1

采纳的回答： Star Strider

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I am in interested in passing extra arguments to nlinfit function in Matlab

beta = nlinfit(X,Y,modelfun,beta0)

and let the modelfun is

function y = modelfun(beta, c, X)
y = beta(1)*x.^(beta2) + c;

My interest is to estimate beta and also to provide c externally. X and Y have their obvious meanings.

Can it be done?

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Star Strider 2018-7-19

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https://ww2.mathworks.cn/matlabcentral/answers/411160-passing-extra-arguments-to-nlinfit-function#answer_329479

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Your function must have your parameter vector as the first argument, your independent variable as the second argument, and any added parameters after that.

Try this:

Beta = nlinfit(X,Y,@(beta,X)modelfun(beta, c, X),beta0)

See the documentation on Passing Extra Parameters (link).

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Pankaj 2018-7-20

thanks

Star Strider 2018-7-20

As always, my pleasure.

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