annotation_raster_tern: Annotation: High-performance rectangular tiling (ggtern...
In leogama/ggtern: An Extension to 'ggplot2', for the Creation of Ternary Diagrams

Description Usage Arguments Details Author(s) Examples

This is a special version of geom_raster optimised for static annotations that are the same in every panel. These annotations will not affect scales (i.e. the x and y axes will not grow to cover the range of the raster, and the raster must already have its own colours).

1 2	annotation_raster_tern(raster, xmin = 0, xmax = 1, ymin = 0, ymax = 1, interpolate = FALSE)

`raster`	raster object to display
`xmin, xmax`	x location (in npc coordinates) giving horizontal location of raster
`ymin, ymax`	y location (in npc coordinates) giving vertical location of raster
`interpolate`	If `TRUE` interpolate linearly, if `FALSE` (the default) don't interpolate.

Most useful for adding bitmap images.

Nicholas Hamilton

data(Feldspar)
data(FeldsparRaster)
ggtern(Feldspar,aes(Ab,An,Or)) + 
theme_rgbw() + 
annotation_raster_tern(FeldsparRaster,xmin=0,xmax=1,ymin=0,ymax=1) +
geom_mask() + 
geom_point(size=5,aes(shape=Feldspar,fill=Feldspar),color='black') +
scale_shape_manual(values=c(21,24)) +
labs(title="Demonstration of Raster Annotation")