Using ggbiplot, how can I hide the points from the plot so that only the vectors are shown? I know I can modify the points by adding geom_point() but as it does not seem to be possible to plot geom_point() behind the ggbiplot() layer e.g. setting the background colour as the point colour does not work.
library(ggbiplot)
data(wine)
wine.pca <- prcomp(wine, scale = TRUE)
ggbiplot::ggbiplot(wine.pca, obs.scale = 1, var.scale = 1)
