Please help!

Hello All

I got this error while I tried to export cuckoo search Matlab code file which is provided in your website to c++ in this link http://www.mathworks.com/matlabcentral/fileexchange/29809-cuckoo-search-cs-algorithm/content/cuckoo_search.m

the error is:

>> coder -build Untitled2.prj ??? Undefined function or variable 'nest'. The first assignment to a local variable determines its class.  Error in ==> cuckoo_search Line: 63 Column: 44 Code generation failed: Open error report.

the error appear wherever their are variables, I don't know way! Please how to overcome this error ??

I appreciate your advice !

Answer 1

[Friedrich]

Hi,

please preallocate the output variables first, because the first appearance of nest is in a loop where you populate it,

nest(i,:)=Lb+(Ub-Lb).*rand(size(Lb));

Matlab Coder dont know the size/type of nest.

[Mansour]

Thanks for replay, Friedrich!

Just more question, can I assign or initialize this variable to Zero at the beginning of program.

[Friedrich]

You can, if it doesnt change how the program works. Important for the ML Coder is that it know the size and datatype. So if you do something linke nest = zeros(??,??) (?? is the size you have to specify) than it should work fine.