---------- begin included -------- Greetings! I want to follow the evolution of a Nelder-Mead function minimisation (a function of 2 variables). Hence each simplex will have 3 vertices.
Therefore I would like to have a function which can output the coordinates of the 3 vertices after each new simplex is generated. However, there seems to be no way (which I can detect) of extracting this information from optim() (the 'trace' argument to 'control' does not seem to have provision for this, according to '?optim', and I have tried it out without success). --- end include ----- Why not put a cat() statement into "fn", the function that you supply which optim is calling? That will give the vertices that it tries one by one. Terry T. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
