[R-sig-ME] Is there a leverage diagnostic test for glmmTMB models?

John Fox j|ox @end|ng |rom mcm@@ter@c@
Mon Jul 27 21:47:41 CEST 2020

Dear April,

Unfortunately, there's no hatvalues() method for "glmmTMB" objects, nor 
do functions in the car package, where the influenceIndexPlot() function 
that you tried to use originates, have "glmmTMB" methods. car does have 
methods for the "merMod" objects produced by functions in the lme4 
package and for the "lme" objects produced by the lme() function in the 
nlme package, but those probably aren't useful to you.

I'm willing to look into providing the necessary infrastructure in the 
car package to support glmmTMB() but can't promise to do that before the 


   John Fox
   Professor Emeritus
   McMaster University
   Hamilton, Ontario, Canada
   web: https://socialsciences.mcmaster.ca/jfox/

On 7/27/2020 1:40 PM, April Martinig wrote:
> Hello,
> I've posted my question to Cross Validated, but I am also linking to it here <https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r> because it might have been missed.
> I am trying to use the DHARMa package to test for how much leverage specific points (on one extreme) for my response variable has on my output.
> In my question I have posted the data, what I have tried, and linked to other sources. Thank you in advance.
> Take care,
> April
> ---
> April Martinig, M.Sc.
> Ph.D. Candidate in Ecology
> University of Alberta
> martinig.weebly.com
> “I do not accept the conventional order of things as a given."
> https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r <https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r>.
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