R语言绘制点线图和红色点线图

R语言绘制点线图和红色点线图

plot(pressure$temperature, pressure$pressure, type="l")
points(pressure$temperature, pressure$pressure)
lines(pressure$temperature, pressure$pressure/2, col="red")
points(pressure$temperature, pressure$pressure/2, col="red")

绘制线图

library(ggplot2)
qplot(pressure$temperature, pressure$pressure, geom="line")

绘制点线图

qplot(temperature, pressure, data=pressure, geom="line")

# This is equivalent to:

ggplot(pressure, aes(x=temperature, y=pressure)) + geom_line()

# Lines and points together

qplot(temperature, pressure, data=pressure, geom=c("line", "point"))

# Equivalent to:

ggplot(pressure, aes(x=temperature, y=pressure)) + geom_line() + geom_point()

R Graphics Cookbook----O'REILLY---[美]Winston Chang 

开发环境:RStudio 4.2.0