Resolved: How to complete column with zero using tidyr complete?

library(tidyverse)<br />
dat <- tribble(~id, ~pos, ~val, 
          "foo", 1, 10,
          "foo", 2, 5,
          "foo", 3, 1, 
          "bar", 3, 13)
[/code]

</p>



Each <code>id</code> will have position (<code>pos</code>) from 1 to 3.
What I want do to is to fill the id where there is incomplete <code>pos</code> and
fill <code>val</code> with 0. The desired result is this:<br> 


<p>[code]  id      pos   val<br />
 foo       1    10<br />
 foo       2     5<br />
 foo       3     1<br />
 bar       1     0<br />
 bar       2     0<br />
 bar       3    13

  dat  %>% 
  group_by(id) %>% 
  complete(pos, fill = list(val = 0))

dat <- tribble(~id, ~pos, ~val, 
               "foo", 1, 10,
               "foo", 2, 5,
               "foo", 3, 1, 
               "bar", 3, 13)

dat %>% 
  complete(id, pos, fill = list(val = 0))

# A tibble: 6 × 3
  id      pos   val
  <chr> <dbl> <dbl>
1 bar       1     0
2 bar       2     0
3 bar       3    13
4 foo       1    10
5 foo       2     5
6 foo       3     1