Adding multiple columns in a dplyr mutate call

Question

I have a data frame with a dot-separated character column:

> set.seed(310366)
> tst = data.frame(x=1:10,y=paste(sample(c(\"FOO\",\"BAR\",\"BAZ\"),10,TR         


        

Answer 1

You can use separate() from tidyr in combination with dplyr:

tst %>% separate(y, c("y1", "y2"), sep = "\\.", remove=FALSE)

    x       y  y1  y2
1   1 BAR.baz BAR baz
2   2 FOO.foo FOO foo
3   3 BAZ.baz BAZ baz
4   4 BAZ.foo BAZ foo
5   5 BAZ.bar BAZ bar
6   6 FOO.baz FOO baz
7   7 BAR.bar BAR bar
8   8 BAZ.baz BAZ baz
9   9 FOO.bar FOO bar
10 10 BAR.foo BAR foo

Setting remove=TRUE will remove column y