[R] what can we do when R gives no response

From: Peng Jiang <jp021_at_sjtu.edu.cn>
Date: Thu, 03 Jul 2008 08:41:48 +0800


  Hi, dear R experts ,
  I am new. I met this problem when I am trying to learn how to use the nlminb() function. I tried the example which the document provides ( as the following code ) and R gives no response . I don't know whether it is running or not and it takes a very long time but still output nothing so I just close the session window. my question is is there any method that I can see the running status of a R program or what can I do if R gives no response??? thank you in advance. here is my sessionInfo

i386-apple-darwin8.10.1

locale:
zh_CN.UTF-8/zh_CN.UTF-8/C/C/zh_CN.UTF-8/zh_CN.UTF-8

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] mclust_3.1-5

x <- rnbinom(100, mu = 10, size = 10)
hdev <- function(par) {

     -sum(dnbinom(x, mu = par[1], size = par[2], log = TRUE)) }
nlminb(c(9, 12), hdev)



Peng Jiang 江鹏 ,Ph.D. Candidate
Antai College of Economics & Management
安泰经济管理学院
Department of Mathematics
数学系
Shanghai Jiaotong University (Minhang Campus) 800 Dongchuan Road
200240 Shanghai
P. R. China

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