Repeat rows with specific value

Question

I would like to repeat rows contain specific values in R with df as below

df <- data.frame(name1 = c("x","y","z"),
                 name2 = c(0,1,2))
df

  name1 name2
1     x     0
2     y     1
3     z     2

My desired output

  name1 name2
1     x     0
2     x     0
3     y     1
4     y     1
5     z     2

I would like to say only rows containing 'x' and 'y' will be repeated one time. So far, I only came up with the idea of using add_row and replace NA values by the corresponding values. Any sugesstions for this using tidyverse?

Answer 1

We could do it this way:

library(dplyr)
df %>% 
  filter(name1=="x" | name1=="y") %>% 
  bind_rows(df) %>% 
  arrange(name1)

  name1 name2
1     x     0
2     x     0
3     y     1
4     y     1
5     z     2