start r-study

.Rhistory

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+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')