使用 ggsave 设置图像分辨率

Question

I found myself confused by ggsave not accepting the res argument.

ggplot()
ggsave("p.png", res = 300)

Error in grDevices::png(..., res = dpi, units = "in"): formal argument "res" matched by multiple actual arguments

Luckily, user Roland's comment in this thread helped. I decided to ask a new question because editing the former to the core of the problem seemed more work.

A closer look into?ggsave might have helped too.

Answer 1

Weirdly, and I find very confusingly, ggsave seems to have a different name for the "res" argument in grDevices::<device>

use ggsave(dpi =...) , if you want to change grDevices::<device>(res =...)