Hi I have made a ggbiplot with the example given in the package. I would like to know if it's possible to remove the grey background.
library(ggbiplot)
data(wine)
wine.pca <- prcomp(wine, scale. = TRUE)
print(ggbiplot(wine.pca, obs.scale = 1, var.scale = 1, groups = wine.class, ellipse = TRUE, circle = TRUE))
I have looked into the functions given here
https://github.com/vqv/ggbiplot/blob/master/R/ggbiplot.r
But as far as I can see none of these parameteres changes the background.
I am not experienced in R, but if someone has a solution for the wine example I am sure I can extrapolate to my own data.
Thank you very much!
There are multiple options, but all of them include changing the "theme" somehow. It doesn't has anything to do with biplot, with with ggplot itself.
First, change only the background:
+ theme(panel.background = element_blank())
If you want to remove the grid lines as well:
+ theme(panel.grid.major = element_blank(), panel.grid.minor = element_blank())
Further options are in ?theme
Second, you can change the total theme, for example:
+ theme_bw() #black and white theme, as previously suggested
+ theme_classic(à # classic theme
Or of course, you can combine both.
You can find further info here: http://felixfan.github.io/rstudy/2013/11/27/ggplot2-remove-grid-background-margin/