github - Error in model selection (gamm4) dredge function (MuMIn R package): family not recognised, model skipped -

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i trying model selection generalized additive mixed models (made using gamm4 using mumin package in r. trying follow this piece of literature model selection mumin , gamm4.

i creating model 9 variables, , random individual effect - looks likes this:

library(gamm4) library(mumin) southfull = gamm4(otowidth ~ s(ages) +                   lagfinfsldat_annests +                  fsl_months_feb +                  lagfsldat_annual +                  lagfsldat_spring +                  lagfsl_months_oct+                  finfsldat_summerdat +                  finfsldat_autumndat +                  lagfsl_months_nov , random = ~(1|fishname), data = south)

but when try use dredge function, fails error message:

(dd <- dredge(global.model=southfull)) error in dredge(global.model = southfull) : result empty      in addition: there 50 or more warnings (use warnings() see first 50)     > warnings()     warning messages:     1: in gamm4::gamm4(...) : family not recognized (model 1 skipped)     ...     50: in gamm4::gamm4(...) : family not recognized (model 50 skipped)

is due problem mumin not recognizing gamm4 model family?

full code & data can found @ github repository , specific issue in code gamm_analysis.r, specific warnings found @ line 81.

thank in advance


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