Data Repitition of vector in Data frame for R language-CodePudding

For example: Here we have the table:

Height---H_Or_L

20-------High

30-------High

5--------Low

6--------Low

We need the exact format when converted into a data frame for vectors:-

Height = c(20, 30, 5, 6)

H_or_L = c("High", "Low")

Is it possible to convert these two vectors into a data frame to produce the exact table above?

If done, data.frame(Height, H_or_L), the table it produce will be:

Height---H_Or_L

20-------High

30-------Low

5--------High

6--------Low

Is there any standard method to do this? (not using loops)

Or making H_or_L = c("High", "High", "Low", "Low") only choice, if loops are not used?

CodePudding user response：

As you found out, default vector repeating is to repeat the entire vector, not to repeat individual items.

To repeat individual items, we can make a oneliner for any required length (I have made Height to be 5 items long this time:

Height = c(20, 30, 5, 6, 7)
H_or_L = c("High", "Low")

rep(H_or_L, each = ceiling(length(Height)/length(H_or_L)))[1:length(Height)]

Result:

> rep(H_or_L, each = ceiling(length(Height)/length(H_or_L)))[1:length(Height)]
[1] "High" "High" "High" "Low"  "Low"