Layer, either as a ggproto Geom subclass or as a string naming the The statistical transformation to use on the data for this A function can be createdįrom a formula (e.g. Seeįortify() for which variables will be created.Ī function will be called with a single argument, All objects will be fortified to produce a data frame. If NULL, the default, the data is inherited from the plotĭata as specified in the call to ggplot().Ī ame, or other object, will override the plotĭata. You must supply mapping if there is no plot Inherit.aes = TRUE (the default), it is combined with the default mappingĪt the top level of the plot. Set of aesthetic mappings created by aes().