最佳答案
请问如何更改这个图形上的 x 和 y 标签?
library(Sleuth2)
library(ggplot2)
discharge<-ex1221new$Discharge
area<-ex1221new$Area
nitrogen<-ex1221new$NO3
p <- ggplot(ex1221new, aes(discharge, area), main="Point")
p + geom_point(aes(size= nitrogen)) +
scale_area() +
opts(title = expression("Weighted Scatterplot of Watershed Area vs. Discharge and Nitrogen Levels (PPM)"),
subtitle="n=41")