Simple samples for R lesson

gistfile1.r

# Examples for R training
# Author: Gang Chen <chengang@genomics.cn>
# Nov 2012

# Lesson 2
# vector
a <- c(1, 2, 5, 3, 6, -2, 4)
b <- c("one", "two", "three")
c <- c(TRUE, TRUE, TRUE, FALSE, TRUE, FALSE)

# matrix
y <- matrix(1:20, nrow=5, ncol=4)
x <- matrix(1:10, nrow=2)

# array
myarray <- array(vector, dimensions, dimnames)

# data frame
patientID <- c(1, 2, 3, 4)
age <- c(25, 34, 28, 52)
diabetes <- c("Type1", "Type2", "Type1", "Type1")
status <- c("Poor", "Improved", "Excellent", "Poor")
patientdata <- data.frame(patientID, age, diabetes, status)

# factor
diabetes = factor(diabetes)

# list
g <- "My First List"
h <- c(25, 26, 18, 39)
j <- matrix(1:10, nrow=5)
k <- c("one", "two", "three")
mylist <- list(title=g, ages=h, j, k)

# Lesson 3