padding on all sides

Author: yihui

examples/coordinates.Rmd

@@ -96,7 +96,7 @@ encoding (a character vector of column names) instead of `x`/`y`.
 ```{r}
 g2(iris, position = c('Sepal.Length', 'Sepal.Width',
     'Petal.Length', 'Petal.Width'), color = 'Species',
-    padding = c(30, NA, NA, NA)) |>
+    padding = 30) |>
   mark_line() |>
   coord_parallel() |>
   legend_color(position = 'bottom')