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R Introduction

bookType Conversion

Numbers can be converted between different types using built-in functions. This allows you to work with values as integers, doubles, or complex numbers when needed.

Incorrect Conversion

Simply appending L to an existing variable does not convert it:


              
12

            
num <- 20
numL # Invalid way to convert
copy

Correct Conversion

Instead, you should use one of these functions:

  • as.integer();
  • as.double();
  • as.complex().

              
123

            
as.integer(3.8)
as.double(5L)
as.complex(7)
copy

Numerical types follow a hierarchy, which defines how values can be converted:

  • integer β†’ double β†’ complex conversions are always valid;
  • Converting a double into an integer truncates the decimal part;
  • A complex number can be converted only if its imaginary part is zero.
Task

Swipe to start coding

  1. Convert the number 9.85 to an integer.
  2. Convert the integer 42, created with L, to a double.

Solution

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SectionΒ 2. ChapterΒ 3
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bookType Conversion

Swipe to show menu

Numbers can be converted between different types using built-in functions. This allows you to work with values as integers, doubles, or complex numbers when needed.

Incorrect Conversion

Simply appending L to an existing variable does not convert it:


              
12

            
num <- 20
numL # Invalid way to convert
copy

Correct Conversion

Instead, you should use one of these functions:

  • as.integer();
  • as.double();
  • as.complex().

              
123

            
as.integer(3.8)
as.double(5L)
as.complex(7)
copy

Numerical types follow a hierarchy, which defines how values can be converted:

  • integer β†’ double β†’ complex conversions are always valid;
  • Converting a double into an integer truncates the decimal part;
  • A complex number can be converted only if its imaginary part is zero.
Task

Swipe to start coding

  1. Convert the number 9.85 to an integer.
  2. Convert the integer 42, created with L, to a double.

Solution

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Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 2. ChapterΒ 3
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