Undefined function 'classifyBoundsOnVars' for input arguments of type 'double'.

Hello,

I am trying to run fmincon and I am getting the following error

Undefined function 'classifyBoundsOnVars' for input arguments of type 'double'.

Error in fmincon (line 499)
    xIndices = classifyBoundsOnVars(l,u,sizes.nVar,true);

when I put in the command window:

open classifyBoundsOnVars

it appears:

Error using open (line 85)
File 'classifyBoundsOnVars' not found.

This means the function doesn't exist. i am wondering why I cannot run the optimization and why I don't have the 'classifyBoundsOnVars' function.

Answer 1

[Mudambi Srivatsa]

Use the following command and see if these functions are present on your computer.

>> which -all fmincon

>> which -all classifyBoundsOnVars

'fmincon' function does not come with base MATLAB and it is in the Optimization toolbox, so please also check if you have this toolbox on your license.

If there is no issue with the installation and license, the output for the above commands will be as follows:

<C:\Program Files\MATLAB\R2017a\toolbox\shared\optimlib\fmincon.p>
<C:\Program Files\MATLAB\R2017a\toolbox\shared\optimlib\fmincon.m>  % Shadowed 
<C:\Program Files\MATLAB\R2017a\toolbox\shared\optimlib\private\classifyBoundsOnVars.m>  % Private to optimlib

Also check if the output of the “ver –support” lists the Optimization Toolbox. Try reinstalling the Optimization toolbox if nothing else works. To reinstall it, you can use the “Add-Ons Manager” feature.