This empty guide draws nothing; It is included in rxode2 for compatibility with ggplot 3.2
guide_none(title = waiver(), position = waiver())
Arguments
title: A character string or expression indicating a title of guide. If NULL, the title is not shown. By default (waiver()), the name of the scale object or the name specified in labs() is used for the title.
position: Where this guide should be drawn: one of top, bottom, left, or right.
Returns
nothing, simply included to be compatible with ggplot 3.2