Invert the colours of a set of figures — invert

Build dark-mode variants of several figures at once, dispatching on the file extension: SVG files are inverted with invert_svg() and PNG files with invert_png(). Every output is written next to its input, or into output_dir, with a -dark suffix added to the name. Files that already carry the suffix are skipped, so running the function twice does not complement the dark variants again.

Usage

invert_figures(
  path,
  output_dir = NULL,
  suffix = "-dark",
  recursive = FALSE,
  quiet = FALSE
)

Arguments

path: Path(s) to figure files, or to directories holding them.
output_dir: Directory the dark variants are written to. Default is next to each input file.
suffix: Suffix added to the file name of every dark variant. Default is -dark.
recursive: Whether a directory is scanned recursively. Default is FALSE.
quiet: Whether to suppress the per-file messages. Default is FALSE.

Value

The paths of the written files, invisibly.

Details

Other formats are not supported: there is no way to rewrite the colours of a PDF from R without rasterising it first. Re-render the figure as SVG or PNG where possible, for instance with ggsave(), or rasterise the PDF before inverting it. Unsupported files are only reported when they are passed as a file; a directory is scanned for the supported extensions.