Unrecognized function or variable 'getIpOptions'.

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Antonios Nasioulas
Antonios Nasioulas 2019-11-18
编辑： Dev Vaibhav 2022-3-2
I try to use fmincon with options being
options = optimset('Algorithm', 'interior-point', 'Display', 'off', 'MaxIter', 10000);
and this is the error I get:
Unrecognized function or variable 'getIpOptions'.
Error in fmincon (line 822)
options = getIpOptions(options,sizes.nVar,mEq,flags.constr,defaultopt,10,0.01);
Error in model_fitting (line 40)
[parameters_opt,ll_opt]=fmincon(@(x) RW_model(x,learning_data,false), init, [], [], [],
[], lowerBound, higherBound, [], options);
I saw that others have the same issue, but I din't find any solution.

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回答（2 个）

Adam Danz
Adam Danz 2019-11-18
编辑：Adam Danz 2019-11-18
The file getIpOptions.m should be stored in the directory identified below. Run this line of code which should open the directory where this function is stored and look for that function (for Windows)
winopen(fullfile(matlabroot,'toolbox\optim\optim'))
If the file exists, the path has somehow been removed. Restart Matlab and see if the problem goes away. If it doesn't go away, check your startup.m file (if that file exists) to determine if you're removing important paths. You could also try running restoredefaultpath.
If the file doesn't exist, is it possible that it was deleted?
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Jarry
Jarry 2021-12-15
编辑：Jarry 2021-12-15
Reinstalling the Optimization Toolbox from Matlab Installer works for me (Ubuntu). Thanks @Walter Roberson
Dev Vaibhav
Dev Vaibhav 2022-3-2
编辑：Dev Vaibhav 2022-3-2
Thanks @Jarry . In my case, Optimization Toolbox was not installed and surprisingly, matlab did not show any error which directly says that the toolbox is not installed. Had to figure out a little bit to install the toolbox as well. But finally it worked !

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uma
uma 2020-3-5
编辑：Walter Roberson 2020-3-5
[at this point the user had a copy of the Mathworks pdist2 code]
After excuting this code i get this error:
pdist2(X, Y, metric)
Unrecognized function or variable 'X'.

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