[R] How to fix error in the package 'rgenoud'

[Wonsang You]

I have to make correction in my error message which I introduced in my
original message. Sorry for my mistake. 
Finally, I had the following error message after running the function
'genoud'.

Error in optim(foo.vals, fn = fn1, gr = gr1, method = optim.method, control
= control) : 
  non-finite finite-difference value [1]

When I execute 'traceback()' to trace where the error occured, I got the
following results. Unfortunately, I could not figure out what was the
problem from the above information.

6: optim(foo.vals, fn = fn1, gr = gr1, method = optim.method, control =
control)
5: function (foo.vals) 
   {
       ret <- optim(foo.vals, fn = fn1, gr = gr1, method = optim.method, 
           control = control)
       return(c(ret$value, ret$par))
   }(c(0.220878697173384, -13.3643173824871))
4: .Call("rgenoud", as.function(fn1), new.env(), as.integer(nvars), 
       as.integer(pop.size), as.integer(max.generations),
as.integer(wait.generations), 
       as.integer(nStartingValues), as.real(starting.values), as.vector(P), 
       as.matrix(Domains), as.integer(max), as.integer(gradient.check), 
       as.integer(boundary.enforcement), as.double(solution.tolerance), 
       as.integer(BFGS), as.integer(data.type.int),
as.integer(provide.seeds), 
       as.integer(unif.seed), as.integer(int.seed), as.integer(print.level), 
       as.integer(share.type), as.integer(instance.number),
as.integer(MemoryMatrix), 
       as.integer(debug), as.character(output.path),
as.integer(output.type), 
       as.character(project.path), as.integer(hard.generation.limit), 
       as.function(genoud.optim.wrapper101), as.integer(lexical), 
       as.function(fnLexicalSort), as.function(fnMemoryMatrixEvaluate), 
       as.integer(UserGradient), as.function(gr1func), as.real(P9mix), 
       as.integer(BFGSburnin), as.integer(transform), PACKAGE = "rgenoud")
3: genoud(Qmin, nvars = 2, starting.values = InitVal, max.generations = 10, 
       wait.generations = 3, n = n, yper = yper, pertype = pertype) at
wFGN.R#75

-----
Wonsang You
Leibniz Institute for Neurobiology
-- 
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