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

[b88207001 at ntu.edu.tw]

Hi Jeff,

Thank you for your response! I appreciate the guide. I will post my  
question there!

Best,
Yen


引述 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
>>
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