[R] Optimize selected variables but not all - nloptr

[Jeff Newmiller]

You provided the data but not the broken code. 
-- 
Sent from my phone. Please excuse my brevity.

On October 19, 2016 2:59:08 PM PDT, Narendra Modi <bjpmodi2016 at gmail.com> wrote:
>Hello All,
>I have a matrix with initial values as below and I need to optimize
>the variables that are greater than 0.
>
>          TAU       fij      fij2
> [1,] 14.33375 0.0000000 0.01449572
> [2,] 14.33375 0.0000000 0.00000000
> [3,] 14.33375 0.0000000 0.00000000
> [4,] 14.33375 0.0000000 0.02206446
> [5,] 14.33375 0.0000000 0.00000000
> [6,] 14.33375 0.0000000 0.00000000
> [7,] 14.33375 0.0000000 0.00000000
> [8,] 14.33375 0.8279846 0.00000000
> [9,] 14.33375 0.0000000 0.03695833
>[10,] 14.33375 0.0000000 0.00000000
>
>Or structure(c(14.3337481730129, 14.3337481730129, 14.3337481730129,
>14.3337481730129, 14.3337481730129, 14.3337481730129, 14.3337481730129,
>14.3337481730129, 14.3337481730129, 14.3337481730129, 0, 0, 0,
>0, 0, 0, 0, 0.827984553120177, 0, 0, 0.0144957197835888, 0, 0,
>0.0220644627842788, 0, 0, 0, 0, 0.0369583294835073, 0), .Dim = c(10L,
>3L), .Dimnames = list(NULL, c("TAU", "fij", "fij2")))
>
>Is it possible to provide lowerbound and upperbound as 0 for variables
>(< 0 in the initial matrix) and nloptr will consider them "unchanged"
>during optimization?
>
>Rstudio crashes when I try to do that. Is this a bug or I should
>approach it differently?
>
>NM
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>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.