What is this error

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Somebody 2013-1-15

Hello everyone.

While using GlobalSearch in my global optimization routine, I incountered the following error:

Error using globalsearchnlp (line 110)
All elements of X must be real.

Im not able to open this file, "globalsearchnlp". What are these X? How can I fix it?

Many thanks!

Jonathan Epperl 2013-1-15

Try

dbstop if error

before you execute your global search. It'll stop in the debugger then, maybe that'll enable you to find out what's wrong.

Shashank Prasanna 2013-1-15

Any code examples you could provide?

Walter Roberson 2013-1-15

Your function evaluations are sometimes producing imaginary numbers. Be sure to put in appropriate bounds on your function range.

Somebody 2013-1-18

Yes, thank you. I found the place where my code produced complex numbers.

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