install.packages(c("mgcv", "survival"))
a <- 7
cls
## 기초 명령어 실습 ##
## 기초 명령어 실습 ##
1+1
1:10
dd = c(1:10)
dd
dd [2:3,]
dd [c(2:3),]
dd [2:3]
dd[2:3]
dd[1:9]
dd[-1]
dd[-10]
dd[-10]
detach("package:base", unload = TRUE)
install.packages("foreign")
x1 = 3
x2 = "Love is choice"
x3 = FALSE
x4 = 3-2i
str(x1)
str(x2)
str(x3)
str(x4)
str(x1,x2,x3,x4)
4
str(x4)
str(x5)
str(x5)
x5 = '123'
str(x5)
str(x1)
str(x3)
str(x7)
x7 = 'FLASE'
str(x7)
x6 = 'false'            # character
str(x7)
x8 = 8.8
x8 = 8.8
str(x8)
xx1 <- c(1:100)
xx1
xx1 <- c(1:100)
xx1
is.na()
is.na(xx1)
table(is.na(xx1))
x1 = c(1,'love',TRUE,2+3i)
x1
install.packages('ggplot2')
install.packages('dplyr')