R ggplot, remove white margins in ggsave/ggplot

Question

How can I remove the white margins in ggsave?

My question is exactly the same as Remove white space (i.e., margins) ggplot2 in R. However, the answer there isn\'t ideal

Answer 1

In this answer linking to this blog post there is a solution which also works for different aspect ratios. You can crop the image on your hard drive, independently of OS:

knitr::plot_crop()