error using ranef function

[Cíntia da Costa]

Hello everyone,

I'm trying to set the  function for finite-sample number and proportion of occupied sites

  

fs.fn <- function(fm) { 

 Nocc <- sum(ranef(fm)@post[,2,]) 

 psi.fs <- Nocc / nrow(fm@data@y) 

 out <- c(Nocc = Nocc, psi.fs = psi.fs) return(out) }  

when I get to the stage:

fs.hat <- fs.fn(mod29)

PS: mod29 = occu(formula = ~temp + humi ~ land_5000m.enn, data = ufo)

The following error appears: 

"Error in UseMethod("ranef") :

  method not applicable for 'ranef' applied to a class object "c('unmarkedFitOccu', 'unmarkedFit')"

Any suggestions for dealing with this issue?

[Ken Kellner]

My guess would be that you have loaded another package with a ranef function after unmarked, such as lme4, and it is masking the unmarked version of the function. Have you tried running this code in a new R session without any other packages loaded?

Ken

[Marc Kery]

Could also do this: unmarked::ranef(....), right ?

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From: unma...@googlegroups.com <unma...@googlegroups.com> on behalf of Ken Kellner <con...@kenkellner.com>
Sent: Thursday, December 23, 2021 17:43
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Subject: [unmarked] Re: error using ranef function

 

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[Ken Kellner]

Yes, that's probably a better and safer option! Thanks Marc.