外部パッケージを必要としない 2 つの方法:
# get the data, the number labelled columns get automatically renamed
# to say 'X50' instead of '50'
test <- read.table(text="Time 50 100 150 200 250 300 350
Carla 1.2 1.8 2.2 2.3 3.0 2.5 1.8
Mace 1.5 1.1 1.9 2.0 3.6 3.0 2.5
Lea 1.7 1.6 2.3 2.7 2.6 2.2 2.6
Karen 1.3 1.7 1.9 2.2 3.2 1.5 1.9",header=TRUE)
方法 1 :as.data.frame.table
rownames(test) <- test$Time
result <- setNames(as.data.frame.table(as.matrix(test[-1])),c("Name","Time","Score"))
result$Time <- gsub("X","",result$Time)
> head(result)
Name Time Score
1 Carla 50 1.2
2 Mace 50 1.5
3 Lea 50 1.7
4 Karen 50 1.3
5 Carla 100 1.8
6 Mace 100 1.1
方法 2 : ベース Rreshape
result <- reshape(test, idvar="Time", varying=-1, direction="long", sep="")
names(result) <- c("Name","Time","Score")
> head(result)
Name Time Score
Carla.50 Carla 50 1.2
Mace.50 Mace 50 1.5
Lea.50 Lea 50 1.7
Karen.50 Karen 50 1.3
Carla.100 Carla 100 1.8
Mace.100 Mace 100 1.1