inst/doc/intro_R.R

In mzinkgraf/BiometricsWWU: BioStats at WWU

## ----eval = FALSE-------------------------------------------------------------
#  2 + 2
#  6 - 4
#  3 * 6
#  4 / 8
#  2^3 #exponent
#  2 - 3 * 4
#  (2 - 3) * 4 #parentheses change the order of operations
#  sqrt(2) #square root
#  2^(1/2) #also square root
#  pi
#  sin(pi)
#  exp(1) #e^1
#  log(10) #natural log
#  log(10, 10) #log base 10

## ----eval = FALSE-------------------------------------------------------------
#  squareroot(2)
#  sqrt 2
#  sqrt(-2)

## ----eval = FALSE-------------------------------------------------------------
#  sin(3     #hit ENTER
#  )         #hit ENTER
#  sin(3     #hit ENTER
#            #hit ESC

## -----------------------------------------------------------------------------
a = 1
b <- 2
c <- 3
4 -> d

## -----------------------------------------------------------------------------
sum(c(1, 2, 3, 4))

## -----------------------------------------------------------------------------
crush <- function(name_1, name_2) {
  print(paste(name_1, "LOVES", name_2))
}
crush(name_1 = "Ben", name_2 = "Melissa")

## -----------------------------------------------------------------------------
crush <- function(name_1 = "Ben", name_2 = "Melissa") {
  print(paste(name_1, "LOVES", name_2))
}
crush()

## -----------------------------------------------------------------------------
crush("Elton", "David")