how to store the intermediate result when using fmincon

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xueqi
xueqi 2013-1-30
回答： Daniel Frisch 2020-10-7
Dear fellows, I am using fmincon to do optmization. Could you tell me how to look at and store the intermediate result when fmincon is trying different value? Well, I need to give an initial value for fmincon to start, and after that, it will try different value to find the optimized one. I want to check all those values that it tried and the corresponding results. Cheers

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Shashank Prasanna
Shashank Prasanna 2013-1-30
You can use OutputFcn to access values at each iteration.
See the following link for more information:
http://www.mathworks.com/help/optim/ug/output-functions.html
In the optionset you can use the function as below:
options = optimset('OutputFcn',@outfun)
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Shashank Prasanna
Shashank Prasanna 2013-2-5
编辑：Shashank Prasanna 2013-2-5
I am not sure I follow you. I don't want the final output.
Just run your optimization and and even if it is stuck at an iteration, can you please paste what is on the screen? If you post it in the forum there may be other who may be able to help you better. If you don't provide enough information, no one will be able to help you.
xueqi
xueqi 2013-2-5
It needs to read in data in excel file. I can I also put into excel file here? Thanks!

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xueqi
xueqi 2013-2-5
It needs to read in data in excel file. I can I also put into excel file here? Thanks!
Alan Weiss
Alan Weiss 2013-2-5
Use the xlswrite function to export data to an Excel file.
Alan Weiss
MATLAB mathematical toolbox documentation
Daniel Frisch
Daniel Frisch 2020-10-7
You can use my function outputFcn_global that saves all the intermediate results in a global variable, so you can inspect them later on.
https://de.mathworks.com/matlabcentral/fileexchange/80831-outputfcn_global

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