Re: [R] Gradient function for optim.

2009-03-02 Thread rkevinburton
Thank you. I saw the source. But I am not sure how to get from .Internal(optim(...)) to fmingr. Kevin Katharine Mullen wrote: > see the fmingr function in src/main/optim.c > (https://svn.r-project.org/R/trunk/src/main/optim.c) > > On Wed, 25 Feb 2009 rkevinbur...@charter.net wrote: > >

Re: [R] Gradient function for optim.

2009-02-25 Thread Katharine Mullen
see the fmingr function in src/main/optim.c (https://svn.r-project.org/R/trunk/src/main/optim.c) On Wed, 25 Feb 2009 rkevinbur...@charter.net wrote: > I have read that when the gradient function is not supplied (is null) > then first order differencing is used to find the differential. I was > tr