I have the following data:
df <- data.frame(a = c(5,5,8,4,2,1,9,8,7,3,6)
I want add a new column to name the numbers based on the following:
names <- c(1 = "A", 2 = "B", 3 = "C", 4 = "D", 5 = "E",
6 = "F", 7 = "G", 8 = "H", 9 = "I", 10 = "J", 11 = "K")
The desired output is:
a b
1 5 E
2 5 E
3 8 H
4 4 D
5 2 B
6 1 A
7 9 I
8 8 H
9 7 G
10 3 C
11 6 F
>Solution :
If you are continuing from your previous question where you want to divide the data by range, you can use labels option in cut.
Using the previous example –
range <- c(0, seq(19, max(DF$AGE) + 10, 10))
labs <- paste(range[-length(range)] + 1, range[-1], sep = '-')
labs
#[1] "1-19" "20-29" "30-39" "40-49" "50-59" "60-69"
transform(DF, GROUP = cut(AGE, c(0, seq(19, max(AGE) + 10, 10)), labels = labs))
# NAME AGE GROUP
#1 Gait 33 30-39
#2 Roc 43 40-49
#3 Bo 37 30-39
#4 Hernd 45 40-49
#5 Bet 44 40-49
#6 Oln 35 30-39
#7 Gai 22 20-29
#8 Rock 30 30-39
#9 Mil 38 30-39
#10 Arli 23 20-29
#11 Re 45 40-49
#12 Fred 43 40-49
#13 Ro 67 60-69
#14 Rock 43 40-49
#15 Wheat 28 20-29
#16 Germa 47 40-49
#17 Rock 16 1-19
#18 Nort 29 20-29
#19 Arli 22 20-29
#20 Rockv 31 30-39