R语言中分组绘制概率密度图_felix123

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R语言中分组绘制概率密度图

(2014-06-24 13:32:52)

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分类： R语言

> #使用R绘制分组比较的实心概率密度图

> require(sm)

> #sm包的全称是Smoothing Methods for Nonparametric regression and density estimation

> attach(mtcars)

The following objects are masked _by_ .GlobalEnv:

am, cyl, hp, vs, wt

The following objects are masked from mtcars (position 3):

am, carb, cyl, disp, drat, gear, hp, mpg, qsec, vs, wt

> sm.density.compare(mpg,cyl,xlab="miles per gallon",main="MPG Distribution by Number of Cylinders")

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