如何使用ggplot更改R中图形上的颜色代码标签？

Question

I'm doing a case study, and I wanted to include some stuff made in R to practice my coding skills on that language.

According to my notes, I should be able to change the color code label with the scale_colour_manual(name = "Region") part, but on the graph it just don't make the change.

Any ideas?

Answer 1

In general, ggplot uses colour when referring to outlines, and fill when referring to the inside colour of a shape. In your example the colour of the plots is actually a fill . So you should be using

scale_fill_manual(name = "Region")

That should then do what you want it to.