pivot_longer with groups of columns [duplicate]

Answer 1

You can use :

tidyr::pivot_longer(df_start, 
                    cols = -c(name, age, number), 
                    names_to = c("xval", ".value"),
                    names_pattern = 'x(\\d+)_(.*)')

Which yields

# A tibble: 9 x 7
  name    age number xval  sn_ctrl1 listing2_2 affect1
  <chr> <dbl>  <dbl> <chr>    <dbl>      <dbl>   <dbl>
1 John     28      6 1            1          1       9
2 John     28      6 2            4         NA       9
3 John     28      6 1           NA          5      NA
4 Paul     27      4 1            2          1       4
5 Paul     27      4 2            1         NA       3
6 Paul     27      4 1           NA          3      NA
7 Ringo    31      9 1            3          1       2
8 Ringo    31      9 2            2         NA       8
9 Ringo    31      9 1           NA          5      NA