R语言主成分分析报告

#read data

data=read.csv("edited_life_history_data.csv")

head(data)

life.history <- read.csv("edited_life_history_data.csv")

dose <- factor(c("1 Gy", "2 Gy", "4 Gy", "5.5 Gy", "Sham"))

dose <- relevel(dose, "Sham")

head(life.history)

colnames(life.history)[1]="Group"

life.history$dose = relevel(life.history$Group,"Sham")

lh <- data.frame(life.history$Average.Egg.Size..LxW.,

life.history$Early.Life.Hatching.Success....hatched., life.history$Early.Life.Hatchling.vigor..days.survived. without.food.,

life.history$Total.Reproductive.Rate)

log.lh <- log(lh)

lh.dose <- life.history[, "Group"]

lh.pca <-prcomp(na.omit(log.lh,

center =TRUE,

scale. =TRUE))

summary(lh.pca)

Importance of components:

PC1 PC2 PC3 PC4

Standard deviation 0.7780 0.25380 0.19543 0.11532