是否可以更改基础 R 中的图例大小（无 ggplot2）

Question

Good morning, I was wandering if there was an option (or a function whatsoever) that allows to modify the size of the "legend" square in a plot made with R base. I've looked up the web, but it seems that I can do everything with my legend but change its size. Does somebody know if it is possible? If yes, how?

Thank you all in advance, Peppe

Answer 1

Assuming a legend of this type

legend("topright",
       legend = c("Var 1", "Var 2"),
       col = 1:2,
       pch = 16,
       cex = 2.5)

cex manages the size of the legend

Answer 2

Like this? Graphics parameter cex stands for c haracter ex pansion.

plot(1)
legend("top", legend = "legend size test")
legend("bottom", legend = "legend size test", cex = 1.5)