R help - Aug 2017 - {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 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

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.
>