R Data Types

Data Types

• integer (e.g. 99)

• numeric (e.g. 99.99, pi)

• complex (e.g. 99 + 9x)

• character (e.g. “R”)

• logical (e.g. TRUE)

# integer
x <- 99
class(x)

[1] "numeric"

# numeric
x <- 99.99
class(x)

[1] "numeric"

# complex
a <-1
x <- 99 + 9*a
class(x)

[1] "numeric"

# character
x <- "R"
class(x)

[1] "character"

# logical
x <- TRUE
class(x)

[1] "logical"

Type Conversions

as.integer()

as.numeric()

as.complex()

as.character()

as.logical()

Data Structures

• vector

• list

• matrix

• data frame

• factors

• tables

References

https://www.rdocumentation.org/packages/raster/versions/3.4-13/topics/dataType