On Tue, Nov 16, 2010 at 2:35 PM, Prof. John C Nash <nas...@uottawa.ca> wrote: > I normally see digest once per day, but got msg from Doug Bates so responding > with context.
> UCMINF is a package on CRAN that implements a variable metric minimizer. A pedant might point out that the package is called "ucminf". > It does quite > well on unconstrained problems. Stig Mortensen packaged the Fortran version > for R, but is > not at moment responding to emails. There's also a Matlab version. We have it > in optimx > and get some occasions where it just stops if we set trace>0. Other times we > can't get it > to fail. My guess is something like an undefined variable or a bad > declaration of a > pointer, but C and C++ are not languages I've much experience with. Well, it doesn't work well for me because my version of gfortran (GNU Fortran (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5) objects to the format strings in some of the Fortran WRITE statements. The recommended approach is to avoid all Fortran I/O including writing to a Fortran character array. As there are only 3 such WRITE statements in the Fortran code it would be very simple to replace them with calls to C functions that in turn call Rprintf. However, it would be best if Stig could take ownership of the modifications. ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
