library(dplyr)library(sqldf) #### 데이터 취득help(package='datasets')data(package='ggplot2') #### 데이터 읽기boston <- read.table('housing.data')glimpse(boston) names(boston)<-c('crim','zn','indux','chas','nox','rm','age','dis','rad','tax','ptratio','black','lstat','medv')glimpse(boston) plot(boston)summary(boston) # 조건 추출attach(iris)(setosa<-iris[Species=="setosa",c(T,F,T,F,F)]) # 특정 종만 추출mea