[R] suggestions argument in rbga function in genalg package

[Enrico Schumann]

I do not use this package, but a quick look at the code shows this.

if (!is.null(suggestions)) {
    # [deleted]
    suggestionCount = dim(suggestions)[1]

So 'suggestions' needs to have a dim argument (while the documentation 
speaks of an 'optional list of suggested chromosomes'). You could try

as.matrix(c(1,0.1,10, 100,1,100,1))

But I cannot tell if that solves your problem since you have not 
provided your objective function (ie, you have not provided the 
"commented, minimal, self-contained, reproducible code" that the footer 
of this message speaks about).


Regards,
Enrico

Am 22.09.2011 20:46, schrieb Joseph Boyer:
> Would someone be so kind as to provide example code where they use the suggestions argument in  the rgba function
> In genalg? I can't get it to work.
>
> The following code works just fine:
>
> GenFit<-rbga(Lower, Upper, evalFunc = evaluate)
>
> Lower and Upper are each numeric vectors with 7 elements. Evaluate is an objective function.
> However, when I want to use a suggested chromosome, I get an error message. My code is
>
> start<- c(1,0.1,10, 100,1,100,1)
>
> suggestions<- list(start)
>
> GenFit<-rbga(Lower, Upper, suggestions = suggestions, evalFunc = evaluate)
>
> The error message is:
>
> Error in 1:suggestionCount : argument of length 0
>
> Thanks.
>
>
>
> 	[[alternative HTML version deleted]]
>
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>

-- 
Enrico Schumann
Lucerne, Switzerland
http://nmof.net/