Re: [R] {nlme} Question about modeling Level two heteroscedasticity in HLM

Hi Bert, Thank you so much for your kind guidance! I will post my question there. Best, Yen 引述 Bert Gunter : A better place for this post would be on R's mixed models list: r-sig-mixed-models . Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming alon

Re: [R] {nlme} Question about modeling Level two heteroscedasticity in HLM

Hi Jeff, Thank you for your response! I appreciate the guide. I will post my question there! Best, Yen 引述 Jeff Newmiller : If you don't get a response it is because you did not read the Posting Guide which indicates that the R-sig-ME mailing list is where this question would have been

[R] {nlme} Question about modeling Level two heteroscedasticity in HLM

Hello dear uesRs, I am working on modeling both level one and level two heteroscedasticity in HLM. In my model, both error variance and variance of random intercept / random slope are affected by some level two variables. I found that nlme is able to model heteroscedasticity. I learned ho

Re: [R] Problem of a function I wrote

Hello everyone, I know where is wrong. I forget to specify the parameters in my function. Thank you for anyone who was trying to help me! Best, Yen 引述 b88207...@ntu.edu.tw: Hello everyone, It seems that I was not successfully attached the code. Here is the code. I appreciate any help!

Re: [R] Problem of a function I wrote

Hello everyone, It seems that I was not successfully attached the code. Here is the code. I appreciate any help! Best, Yen 引述 b88207...@ntu.edu.tw: Hello everyone, I have been working on a code which simply repeatedly appends a number into a vector and write a file. However, it could no

[R] Problem of a function I wrote

Hello everyone, I have been working on a code which simply repeatedly appends a number into a vector and write a file. However, it could not be properly implemented when I use it. It works when I run it line by line. I wonder what is the problem and I appreciate anyone who is willing to h

[R] How to optimize a matrix

I would like to estimate the sigma matrix of multinormal distribution through ML. But I don't know how to optimize the parameter sigma. Could any one help me? Thank you so much~ Yen Lee __ R-help@r-project.org mailing list https://stat.ethz.ch/mail