Exam8.1.2 {eda4treeR} R Documentation

## Example 8.1.2 from Experimental Design & Analysis for Tree Improvement

### Description

Exam8.1.2 presents the Analysis of Nested Seedlot Structure 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.

### Author(s)

2. Sami Ullah (samiullahuos@gmail.com)

### References

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

DataExam8.1

### Examples

data(DataExam8.1)
library(tidyverse)
library(emmeans)
fm8.11 <- aov(formula      =
Dbh~Country*Province
,data         = DataExam8.1
#, subset
#, weights
#, na.action
, method      = "qr"
, model       = TRUE
, x           = FALSE
, y           = FALSE
, qr          = TRUE
, singular.ok = TRUE
, contrasts   = NULL
)
b<-anova(fm8.11)
Res                     <- length(b[["Sum Sq"]])
df                      <- 119
MSS                     <- 0.1951
b[["Df"]][Res]          <- df
b[["Sum Sq"]][Res]      <- MSS*df
b[["Mean Sq"]][Res]     <- b[["Sum Sq"]][Res]/b[["Df"]][Res]
b[["F value"]][1:Res-1] <- b[["Mean Sq"]][1:Res-1]/b[["Mean Sq"]][Res]
b[["Pr(>F)"]][Res-1]     <- df(b[["F value"]][Res-1],b[["Df"]][Res-1],b[["Df"]][Res])
b
library(emmeans)
emmeans::emmeans(fm8.11,specs = "Country")


[Package eda4treeR version 0.3.0 Index]