[R-sig-ME] Fwd: About warning

[Phillip Alday]

Hi,


Two things:

1. Please be patient -- it's been less than 24 hours on the weekend.
2. Please check the list for replies, in case somebody replies to the
list but not to your individual address. In particular, Ben Bolker
already replied to the list with an answer:

https://stat.ethz.ch/pipermail/r-sig-mixed-models/2021q2/029481.html

Good luck!

Best,
Phillip

On 17/5/21 9:33 am, Atsuko Nakagawa wrote:
> Hi
> 
> I send the following mail last night.  Please help us.
> 
> -------- Forwarded Message --------
> Subject: 	About warning
> Date: 	Sun, 16 May 2021 19:10:21 +0900
> From: 	Atsuko Nakagawa <nakagawa using hum.nagoya-cu.ac.jp>
> To: 	r-sig-mixed-models using r-project.org
> 
> 
> Hi
> 
> Thank you very much for your help.
> 
> When we ran Package lme4 to our longitudinal data, we got following 
> warnings repeatedly.
> 
>> fixed-effect model matrix is rank deficient so dropping 2 columns / 
>> coefficients
>> boundary (singular) fit: see ?isSingular 
> Nevertheless, we got some results. Are these valid?
> When I look for the Q&A in some Statistic Forums, sometimes I found the 
> previous answer that we do not have to care these warnings.
> 
> In actuality, how do we deal with these warnings?
> 
> Thank you for your time.
> 
> Atsuko Nakagawa
> 
> Graduate School of Humanities and Social Sciences, Nagoya City 
> University, JAPAN
> 
> 
> 
> 
> 	[[alternative HTML version deleted]]
> 
> _______________________________________________
> R-sig-mixed-models using r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-sig-mixed-models
>