hist(mpg) Auto [ Auto$mpg > 40 , c("mpg","name") ] # verify chart mpg > 40 mpg name 245 43.1 volkswagen rabbit custom diesel 310 41.5 vw rabbit 323 46.6 mazda glc 325 40.8 datsun 210 326 44.3 vw rabbit c (diesel) 327 43.4 vw dasher (diesel) 330 44.6 honda civic 1500 gl 394 44.0 vw pickup

pairs(Auto, col = 3) creates a scatterplot matrix i.e. for every pair of variables for any given data set ( e.g. Auto )

pairs(~ mpg + displacement + horsepower, Auto, col=2) The pairs() function creates a scatterplot matrix. This example produces a subset of the variables

> ggplot(mtcars,aes(x=factor(carb)))+ geom_bar(fill=rainbow(6))

> ggplot(mtcars,aes(x=factor(cyl)))+ geom_bar(fill=rainbow(3))

> x=seq(-pi,pi,length=50) > contour(x,y,fa,nlevels=15) > image(x,y,fa) > persp(x,y,fa) > persp(x,y,fa,theta=30) > persp(x,y,fa,theta=30,phi=40)

x y random plot