How to select specific rows in a data set (R)

Question

I have a data set containing some information about certain US states. The row names are states' names.

I want to select several states' (i.e. "AL" and "CA") information and create a new data set, but how?

You can use `which` in R, or you can use the method here: http://stackoverflow.com/questions/7576138/how-to-remove-rows-of-a-matrix-by-row-name-rather-than-numerical-index — akash87, Jun 18 '16 at 04:25

score 2 · Answer 1 · answered Jun 18 '16 at 04:32

2

Well, you can form a vector of rownames

x <- c("AL", "CA" )

and then

df[x, ]

or directly

df[c("AL", "CA"), ]

answered Jun 18 '16 at 04:32

Ronak Shah

score 1 · Answer 2 · answered Jun 18 '16 at 04:25

1

df2 <- df[rownames(df) %in% c("AL", "CA"),]

answered Jun 18 '16 at 04:25

milan

2 Answers2