You are calling an optimizer that wants gradients without specifying the
gradient method. I've not done any work on
optimx for a couple of years -- on R-forge I've put optimrx which has a more
maintainable design and allows more solvers
to be called using the optim() syntax, including parameter s
On 16 October 2016 at 18:05, Glenn Schultz wrote:
| All,
|
| I am using optimx in my package to fit the term structure of interest rates.
When I call the function from the package I get the following error:
|
| Error in optimx.check(par, optcfg$ufn, optcfg$ugr, optcfg$uhess, lower, :
| Cannot