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R Introduction

bookNumeric Types

By default, numeric values in R are stored as double-precision floating-point numbers (double). To use integers or complex numbers, you must mark them explicitly.

Numeric Types

  • double: real numbers either with or without a decimal point;
  • integer: whole numbers (use L suffix, e.g., 10L);
  • complex: numbers with both real and imaginary parts (use i suffix for imaginary part).

Example


              
123

            
typeof(10)
typeof(10L)
typeof(10 + 5i)
copy

Integers typically require less memory than doubles, so distinguishing between them can be important for efficiency.

Task

Swipe to start coding

  1. Assign the current year's numerical value to a variable named year, and ensure that it is of integer type by appending L.
  2. Determine and display the type of the year variable:

Solution

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Section 2. Chapter 2
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bookNumeric Types

Swipe to show menu

By default, numeric values in R are stored as double-precision floating-point numbers (double). To use integers or complex numbers, you must mark them explicitly.

Numeric Types

  • double: real numbers either with or without a decimal point;
  • integer: whole numbers (use L suffix, e.g., 10L);
  • complex: numbers with both real and imaginary parts (use i suffix for imaginary part).

Example


              
123

            
typeof(10)
typeof(10L)
typeof(10 + 5i)
copy

Integers typically require less memory than doubles, so distinguishing between them can be important for efficiency.

Task

Swipe to start coding

  1. Assign the current year's numerical value to a variable named year, and ensure that it is of integer type by appending L.
  2. Determine and display the type of the year variable:

Solution

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Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 2
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