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R Numbers
Numbers
There are three number types in R:
numericintegercomplex
Variable number types are created when you assign value to them:
Example
x <- 10.5 #
numeric
y <- 10L # integer
z <- 1i # complex
Numeric
The numeric data type is the most common type in R, and contains any decimal or incoming number, such as: 10.5, 55, 787:
Example
x <- 10.5
y <- 55
# Print values of x and y
x
y
#
Print the class name of x and y
class(x)
class(y)
Integer
Integers are numerical data without decimal. This is used if you are sure you will never create variables that must contain decimals. To create a integer value, you must use the letter L after the value:
Example
x <- 1000L
y <- 55L
# Print values of x and y
x
y
# Print the class name of x and y
class(x)
class(y)
Complex
The complex number is labeled "i" as the imaginary component:
Example
x <- 3+5i
y <- 5i
# Print values of x and y
x
y
# Print the class name of x and y
class(x)
class(y)
Type Conversion
You can switch from one version to another with the following functions:
as.numeric()as.integer()as.complex()
Example
x <- 1L # integer
y <- 2 # numeric
# convert from integer to
numeric:
a <- as.numeric(x)
# convert from numeric to integer:
b
<- as.integer(y)
# print values of x and y
x
y
# print
the class name of a and b
class(a)
class(b)