> ggplot(ab_sub, aes(y = isced11, x = dn05, fill = dn05, color = dn05)) +
+   geom_bar( stat="identity") +
+   facet_wrap(~pdm01a)
Don't know how to automatically pick scale for object of type labelled. Defaulting to continuous.
Don't know how to automatically pick scale for object of type labelled. Defaulting to continuous.
Don't know how to automatically pick scale for object of type labelled. Defaulting to continuous.
Don't know how to automatically pick scale for object of type labelled. Defaulting to continuous.
Error in UseMethod("rescale") :
  no applicable method for 'rescale' applied to an object of class "labelled"
> ab_sub[, c("isced11", "dn05", "pdm01a")]
# A tibble: 1,437 x 3
     isced11      dn05 pdm01a
   <dbl+lbl> <dbl+lbl>  <dbl>
 1         5         1      2
 2         5         1      1
 3         5         1      2
 4         7         1      2
 5         7         1      1
 6         3         1      2
 7         3         1      2
 8         5         1      2
 9         3         0      0
10         3         1      2
# ... with 1,427 more rows