option to stop lsqnonlin when residual norm value reached

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Anthony 2011-10-11

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https://ww2.mathworks.cn/matlabcentral/answers/17957-option-to-stop-lsqnonlin-when-residual-norm-value-reached

Hi,

is it possible to set the options for lsqnonlin such that the run stops when the residual norm is lower than a set value? I thought TolFun would do that, but TolFun is the value of change between the residual norm of two iterations and not the residual norm value itself. Thanks

Tony

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Answer 1

Steve Grikschat 2011-10-11

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Hi Tony,

There are no tolerances to stop lsqnonlin when the residual norm crosses a threshold. What you can do instead is set up an OutputFcn that monitors the residual value (in the optimValues struct) at each iteration, and then triggers lsqnonlin to stop when it reaches the satisfactory level.

OutputFcns: http://www.mathworks.com/help/toolbox/optim/ug/f19175.html#f11022

optimValues reference: http://www.mathworks.com/help/toolbox/optim/ug/f19175.html#f11454

+Steve