Re: [R] evolution of Nelder-Mead process

2010-02-09 Thread kostas savvidis
The optim function has a debug option called trace see the helppage: trace Non-negative integer. If positive, tracing information on the progress of the optimization is produced. Higher values may produce more tracing information: for method L-BFGS-B there are six levels of tracing. (To

[R] evolution of Nelder-Mead process

2010-02-08 Thread Juliane Struve
Dear list,   I am looking for an R-only implementation of a Nelder-Mead process that can find local maxima of a spatially distributed variable, e.g. height, on a spatial grid, and outputs the coordinates of the new point during each evaluation. I have found two previous threads about this

Re: [R] evolution of Nelder-Mead process

2010-02-08 Thread Paul Hiemstra
Juliane Struve wrote: Dear list, I am looking for an R-only implementation of a Nelder-Mead process that can find local maxima of a spatially distributed variable, e.g. height, on a spatial grid, and outputs the coordinates of the new point during each evaluation. I have found two previous

Re: [R] evolution of Nelder-Mead process

2010-02-08 Thread Ted Harding
On 08-Feb-10 14:50:59, Paul Hiemstra wrote: Juliane Struve wrote: Dear list, I am looking for an R-only implementation of a Nelder-Mead process that can find local maxima of a spatially distributed variable, e.g. height, on a spatial grid, and outputs the coordinates of the new point