labs: Change axis labels and legend titles

p <- ggplot(mtcars, aes(mpg, wt)) + geom_point() p + labs(title = "New plot title") p + labs(x = "New x label") p + xlab("New x label") p + ylab("New y label") p + ggtitle("New plot title")  # This should work independently of other functions that modify the # the scale names p + ylab("New y label") + ylim(2, 4) p + ylim(2, 4) + ylab("New y label")  # The labs function also modifies legend labels p <- ggplot(mtcars, aes(mpg, wt, colour = cyl)) + geom_point() p + labs(colour = "Cylinders")  # Can also pass in a list, if that is more convenient p + labs(list(title = "Title", x = "X", y = "Y"))