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 threads about this topic, and was wondering if something similar has been implemented since those messages were posted.
Thank you for any suggestions how to approach this task or where to look.
Juliane
Previous posts:
www.mail-archive.com/r-help@r-project.org/msg13078.html
http://www.nabble.com/Nelder-Mead-with-output-of-simplex-vertices-tp25838572p25869383.html
Dr. Juliane Struve
Environmental Scientist
10, Lynwood Crescent
Sunningdale SL5 0BL
01344 620811
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Hi,
Look at the optim() function, it has Nelder-Mead implemented.
cheers,
Paul
--
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: +3130 274 3113 Mon-Tue
Phone: +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul
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