view first 5 row and column
head(mtcars)
## mpg cyl disp hp drat wt qsec vs am gear carb
## Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
## Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4
## Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1
## Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1
## Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2
## Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
variable’s name
## [1] "mpg" "cyl" "disp" "hp" "drat" "wt" "qsec" "vs" "am" "gear"
## [11] "carb"
library(ggplot2)
library(ggthemes)
## Warning: package 'ggthemes' was built under R version 3.4.4
ggplot(mtcars,aes(x=wt,y=qsec,fill=wt))+geom_point()+ theme_minimal()

ggplot(mtcars) + geom_point(aes(x = wt, y = mpg,
colour = factor(gear))) + facet_wrap(~am)+ theme_dark()

ggplot(mpg, aes(displ, hwy, colour = class)) +
geom_point()+ theme_economist()
