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 how to use it for level one heteroscedasticity but don't know how to use it to model the level two heteroscedasticity. I wonder if anyone could give me some guide how to do it or any suggested software / packages if nlme is unable to do it. Many thanks in advance! Best, Yen
{nlme} Question about modeling Level two heteroscedasticity in HLM
5 messages · Jeff Newmiller, Bert Gunter, b88207001 at ntu.edu.tw
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 on-topic.
Sent from my phone. Please excuse my brevity. On August 16, 2017 6:17:03 AM PDT, b88207001 at ntu.edu.tw wrote: >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 how >to use it for level one heteroscedasticity but don't know how to use >it to model the level two heteroscedasticity. I wonder if anyone could > >give me some guide how to do it or any suggested software / packages >if nlme is unable to do it. > >Many thanks in advance! > >Best, >Yen > >______________________________________________ >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.
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 along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Wed, Aug 16, 2017 at 6:17 AM, <b88207001 at ntu.edu.tw> wrote:
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 how to use it for level one heteroscedasticity but don't know how to use it to model the level two heteroscedasticity. I wonder if anyone could give me some guide how to do it or any suggested software / packages if nlme is unable to do it. Many thanks in advance! Best, Yen
______________________________________________ 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.
Hi Jeff, Thank you for your response! I appreciate the guide. I will post my question there! Best, Yen ?? Jeff Newmiller <jdnewmil at dcn.davis.ca.us>:
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 on-topic. -- Sent from my phone. Please excuse my brevity. On August 16, 2017 6:17:03 AM PDT, b88207001 at ntu.edu.tw wrote:
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 how to use it for level one heteroscedasticity but don't know how to use it to model the level two heteroscedasticity. I wonder if anyone could give me some guide how to do it or any suggested software / packages if nlme is unable to do it. Many thanks in advance! Best, Yen
______________________________________________ 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.
Hi Bert, Thank you so much for your kind guidance! I will post my question there. Best, Yen ?? Bert Gunter <bgunter.4567 at gmail.com>:
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 along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Wed, Aug 16, 2017 at 6:17 AM, <b88207001 at ntu.edu.tw> wrote:
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 how to use it for level one heteroscedasticity but don't know how to use it to model the level two heteroscedasticity. I wonder if anyone could give me some guide how to do it or any suggested software / packages if nlme is unable to do it. Many thanks in advance! Best, Yen
______________________________________________ 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.