08 Feb R Data types
A variable in R stores data of different types, like numeric, string, float, etc. An R variable gets created when a value is assigned i.e. mentioning any specific type name is not required.
The following are the datatypes in R:
- numeric
- integer
- complex
- character
- logical/ boolean
- vectors
- lists
Let us understand the datatypes one by one with examples:
Numeric data type in R
The numeric type stores numbers, decimal numbers, etc. Let us see an example:
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# numbers # an integer gets declared by letter L marks <- 99 points <- 125.50 # Display marks points # Display the class of the data type class(marks) class(points) |
Output
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[1] 99 [1] 125.5 [1] "numeric" [1] "numeric" |
Integer data type in R
The integer type stores integers and an appended L is used to declare an integer in R. Let us see an example:
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# integer # An integer gets declared by letter L a <- 5L # Display a # Display the class of the data type class(a) |
Output
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[1] 5 [1] "integer" |
Complex data type in R
The complex type stores complex numbers. It consists of the Real and Imaginary parts with i being imaginary. Let us see an example:
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# Complex # i is the imaginary part a <- 5 + 7i # Display a # Display the class of the data type class(a) |
Output
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[1] 5+7i [1] "complex" |
Character data type in R
The character/ string type stores characters and strings. Use a single quote or double quote while creating a character or string type. Let us see an example:
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# string name_one <- "Amit" # character name_two <- "K" # Display the names name_one name_two # Display the class of the data type class(name_one) class(name_two) |
Output
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[1] "Amit" [1] "K" [1] "character" [1] "character" |
Logical/ boolean data type in R
The boolean type has two values, TRUE or FALSE. Let us see an example:
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# Student Result passed <- TRUE # Display the result passed # Display the class of the data type class(passed) |
Output
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[1] TRUE [1] "logical" |
Vectors in R
The vectors are elements of the same time, separated by a comma. The c() function combines such elements and forms a vector i.e. to create a Vector, use the c() in R programming. Let us see an example:
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# Student Names names <- c("amit", "john", "rohit", "tom") # Display the names names # Display the class of the data type class(names) |
Output
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[1] "amit" "john" "rohit" "tom" [1] "character" |
Lists in R
If you want to add elements of different data types, then use the lists in R. The list() function is used in R to create a List. Let us see an example:
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# Create the List my_list <- list("amit", c(5, 10), 100, 20.95, "john") # Display the List my_list # Display the class of the data type class(my_list) |
Output
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[[1]] [1] "amit" [[2]] [1] 5 10 [[3]] [1] 100 [[4]] [1] 20.95 [[5]] [1] "john" [1] "list" |
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