[R] how to quit this mailing list
Hi, I will end this mailbox and start a new one and i want to quit this list. I search the R official website with no answer. thanks in advance [[alternative HTML version deleted]] __ 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.
[R] how to quit mailing list
Dear list, I will not use this account later, so i have to quit this list. I don't know how to quit this list, I search the official website and find no answer. thanks very much !! [[alternative HTML version deleted]] __ 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.
[R] how to ignore errors
Dear listers,
Hi .
I googled before I ask this question in case to avoid violating the
list law. The question was proposed by somebody else but nobody
gives a proper solution.
How to ignore errors in a R loop? I have a R source file ,namely,
test.r.
I ran a loop in a command line
for(i in 1 : 100 ) {source(test.r,echo =T ) }
and I found that when test.r have some error the loop will stop, but
test.r is just stochastically wrong,i.e., sometimes it works well if
no bad values return.
I want to know how to ignore such errors and let the loop continue.
thanks in advance.
___
Jiang Peng, Ph.D. Candidate
Department of Mathematics
Antai college of Economics and Management
Shanghai Jiao Tong University
Address: Room 431, #3 Building, Xuhui Campus
E-mail: jp021 at sjtu.edu.cn
jp021 at 126.com
MSN: jp021 at hotmail.com
iChat: mathfrog at mac.com
Mobile: +86-138 168 780 95
__
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.
[R] optimization problem
Dear list,
hi !
I am a R beginner and I have a function to optimize .
alpha = argmin{ f(x,alpha) }
I want alpha to be in [0,1]. Is there any function that can work?
I use nlm() but i can't fix the domain of alpha.
thanks in advance
___
Jiang Peng, Ph.D. Candidate
Department of Mathematics
Antai college of Economics and Management
Shanghai Jiao Tong University
Address: Room 127, #3 Building, Xuhui Campus
E-mail: jp021 at sjtu.edu.cn
jp021 at 126.com
MSN: jp021 at hotmail.com
iChat: mathfrog at mac.com
Mobile: +86-138 168 780 95
__
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.
[R] a nlm question
Dear R listers, I posted this problem several days ago but it seems nobody answered. I use nlm to optimize a given function ,but it always generates the following warnings Error in nlm(foo, theta.start) : non-finite value supplied by 'nlm' I don't know why ,can anybody give me some hints ?? thanks in advance. regards . ___ Jiang Peng, Ph.D. Candidate Department of mathematics Antai college of Economics and management Shanghai Jiao Tong University Address: Room 127, #3 Building, Xuhui Campus E-mail: jp021 at sjtu.edu.cn jp021 at 126.com MSN: jp021 at hotmail.com iChat: mathfrog at mac.com Mobile: +86-138 168 780 95 __ 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.
[R] a nlm() question
Dear R listers, I have a very annoying problem using nlm(). I want to find the minimizer of my target function, if written in \LaTeX is f(\mu1,\mu2,\sigma1,\sigma2) = \sum_i^n( w_ig_t(z_i) ), where g_t(z) is a pdf of bivariate normal distribution and z_i is my samples. I cannot get the estimation result generated by nlm(), and I got the following errors Error in nlm(foo, theta.start, hessian = TRUE) : non-finite value supplied by 'nlm' from time to time( If I ran the code second time , it does not have the error .) I am new to R so I don't know if there is any debug method of R code. i hope somebody can help me out . Thanks in advance. Jiang Peng, Ph.D. Candidate Department of mathematics Antai college of Economics and management Shanghai Jiao Tong University Address: Room 127, #3 Building, Xuhui Campus E-mail: jp021 at sjtu.edu.cn jp021 at 126.com MSN: jp021 at hotmail.com iChat: mathfrog at mac.com Mobile: +86-138 168 780 95 __ 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.
