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GLMM: Should Integers be Levels of Dr. Alexandre F. Souza Prof. Associado a Factor?

Mollie Brooks 
Dear Alexandre,

Making those changes shouldn?t be necessary with the GLMM packages I?m familiar with (lme4 and glmmTMB). Your data looks correct as it is, assuming you will treat plot numbers, block levels,
sampling year and the ID of individual measured plants as random intercepts, e.g. the formula contains (1|plot)+(1|block) + (1|year)+(1|ID) . The package will automatically interpret the values of those variables as levels of the random effects. 

An exception is if you were to treat year as an AR(1) random effect. Then you would need to follow the example here
https://cran.r-project.org/web/packages/glmmTMB/vignettes/covstruct.html

Best,
Mollie

  
  


  


  


  
  

    

  

    
      
    
    
Thread (2 messages)

  

  

    
            
        Alexandre F. Souza
        
        GLMM: Should Integers be Levels of Dr. Alexandre F. Souza Prof. Associado a Factor?
      
      Mar 26
    
    
      
            
        Mollie Brooks
        
        GLMM: Should Integers be Levels of Dr. Alexandre F. Souza Prof. Associado a Factor?
      
      Mar 27