generate_background_chart.RdThis function copy a ggplot plot and set all its geoms to `alpha=0`/`size=0`. `alpha=0` makes most elements invisible. `size=0` helps with some elements not influenced by `alpha` like bar borders. The goal is to create a plot object with just the background elements visible.
generate_background_chart(p, family, font_size_booster)
| p | A ggplot plot |
|---|---|
| font_size_booster | A number for `correct_font` |
A ggplot gtable
NOTE: There are probably better way to do this but my attempts to remove geoms ended up in recalculated scales. See: https://stackoverflow.com/q/50434608/2008527
The function also include a call to `correct_font()` which lets you apply a multiplier to all text elements font sizes.