[R] demo(nlm) error under R 0.99.0

Peter Dalgaard BSA p.dalgaard at biostat.ku.dk
Wed Feb 9 00:38:18 CET 2000


brian.o'gorman at noaa.gov writes:

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> I can't seem to get the demo(nlm) to run under  R version 0.99.0
> Anyone know a solution?
> 
> 
> > fgh <- function(x) {
>     gr <- function(x1, x2) {
>         c(-400 * x1 * (x2 - x1 * x1) - 2 * (1 - x1), 200 * (x2 -
>             x1 * x1))
>     }
>     h <- function(x1, x2) {
>         a11 <- 2 - 400 * (x2 - x1 * x1) + 800 * x1 * x1
>         a21 <- -400 *  .... [TRUNCATED]
> 
> > nlm(fgh, c(-1.2, 1), hessian = TRUE)
> Segmentation fault (core dumped)

A nasty little bug in uncmin.c: in line 1820, change i++ to j++ !

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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