Matlab vs Octave

[Bostjan JERKO]

I have a Matlab m file for GA usage. There is an evaluation function used
in rather strange way (at least for me):

function [val,x]=gaDemo1Eval(x,parameters)
val = x(1) + 10*sin(5*x(1)+7*cos(4*x(2)):

After that, this function is used in ga program:

bxtX= ga([0 10: 0  -10], 'gaDemo1Eval')


It seems to be calling the evaluation function. Does anybody know how to 
translate that to Octave ?

Regards,
        B.



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