Plot a ggplot object to a temporary file as a png — ggplot_to

In `roogledocs` a path to a local png is needed as input to tagged image commands. This is a simple wrapper function to save a png using `ragg` with DPI fixed at 300 to a temporary directory and return the file path.

Usage

ggplot_to_png(plot, width, height)

Arguments

plot: a ggplot or patchwork object
width: the width of the output in inches
height: the height of the output in inches

Value

a full path to a png in a temp directory

Examples

if (FALSE) {
  doc = roogledocs::slides_by_name("roogledocs-demo")
  g = ggplot(diamonds, aes(x=carat,y=price, colour=color))+geom_point()
  figure_1 = ggplot_to_png(g, width=4, height=4)
  doc$updateTaggedImage(figure_1)
  
  # same as:
  # doc$updateTaggedImage(ggplot_to_png(plot,4,4), tagName = "figure_1")
  
}