eda4treeR (version 0.3.0)

Exam8.1.1: Example 8.1.1 from Experimental Design & Analysis for Tree Improvement

Description

Exam8.1.1 presents the Mixed Effects Analysis of Diameter at breast height (Dbh) of 60 SeedLots under layout of row column design with 6 rows and 10 columns in 18 countries and 59 provinces of 18 selected countries given in Example 8.1.

References

1. Williams, E.R., Matheson, A.C. and Harwood, C.E. (2002).Experimental Design and Analysis for Tree Improvement. CSIRO Publishing.

See Also

DataExam8.1

Examples

# NOT RUN {
data(DataExam8.1)
library(tidyverse)
library(emmeans)
library(lme4)
fm8.8<- lmer(formula=
     Dbh~1+Replication+Column+Province+(1|Replication:Row)+(1|Replication:Column)
    ,data = DataExam8.1
    ,REML = TRUE
    ,control = lmerControl()
    ,start = NULL
    , verbose = 0L
   #, subset
   #, weights
   #, na.action
   #,offset
    , contrasts = NULL
    , devFunOnly = FALSE)
  anova(fm8.8)
  summary(fm8.8)
  anova(fm8.8, ddf = "Kenward-Roger")
  emmeans::emmeans(fm8.8,specs ="Replication")
  emmeans::emmeans(fm8.8,specs ="Column")
  emmeans::emmeans(fm8.8,specs ="Province")
  RCB1<- aov(Dbh~Province+Replication,data = DataExam8.1)
  RCB<- emmeans::emmeans(RCB1,specs="Province")
  Mixed<- emmeans::emmeans(fm8.8,specs ="Province")
  table8.9<-data.frame(as.data.frame(summary(RCB))[c('emmean', 'SE')],
  as.data.frame(summary(Mixed))[c('emmean', 'SE')])
  colnames(table8.9)<- c("RCB(Mean)","RCB(SE)", "Mixed(Mean)", "Mixed(SE)")
  print(table8.9)
# }