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nlinfit Options - how to set them?

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john birt
john birt 2011-2-21
I want to change the max iterations for nlinfit, as usual the mathworks docs are totally unhelpful by saying
'[...] = nlinfit(X,y,fun,beta0,options) specifies control parameters for the algorithm used in nlinfit. options is a structure created by a call to statset'
so obvoiusly
cfit = nlinfit(xdata,ydata,f,c, MaxIter=600)
does not work, as I have to make a 'call to statset' whatever that means! It does not explain how to do this or provide an example of how this is done.
So how do I change the Max iterations?

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采纳的回答

Matt Tearle
Matt Tearle 2011-2-21
doc statset
statset is a function that will create a structure variable of options; you then pass this structure into nlinfit:
opts = statset('MaxIter',600);
fit = nlinfit(xdata,ydata,f,c,opts)
opts is the structure variable.

更多回答（2 个）

Robert Cumming
Robert Cumming 2011-2-21
You need to put it as a field in a structure:
options.MaxIter = 600
cfit = nlinfit(xdata,ydata,f,c, options)
see help nlinfit for list of options.
Dave
Dave 2012-2-3
Before your call to 'nlinfit' do this: options = statset('nlinfit'); options.MaxIter = 1000;

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