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...1] 1 $message [1] "iteration limit reached without convergence (9)" $iterations [1] 150 $evaluations function gradient 176 44935 I tried many times to take the res1$par as initial values and retry againe but still doesn't converge. Any help will save me Thanks -- Kamel Gaanoun (+33) (0)6.76.04.65.77 [[alternative HTML version deleted]]

Hi Everyone, Can anyone help me resolve a problem that i'm having with nlminb. The problem is that it stops after just one iteration and returns the same values as "start" ones. Thank you very much for your help. Sincerely. -- Kamel Gaanoun (+33) (0)6.76.04.65.77 [[alternative HTML version deleted]]

hi i have the following dataframe x y 1 345 6 NA 8 123 32 123 12 NA 6 124 7 NA and i want to extract the data rows which contains "NA" data, I tried subset(dataframe,y=="NA") but fail. if you know the answers, please let me know thanks. typhoong -- View this message in context: http://r.789695.n4.nabble.com/Extract-NA-data-rows-tp3235568p3235568.html Sent from the

...r Subject line so it is more specific than "Re: Contents of R-help digest..." Today's Topics: 1. 3D Binning (vioravis) 2. help! complete the reviewer's suggest: carry out GA+GP (gaussian process)! (bbslover) 3. nlminb doesn't converge and produce a warning (kamel gaanoun) 4. Loop and store results (Sam) 5. Re: auc function (Petr Savicky) 6. stochastic models for population growth (Vassily Shvets) 7. Re: Loop and store results (Henrique Dallazuanna) 8. Function comparable to cutpt.coxph from "Survival Analysis using S" (Schneider, Friederike...