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TEST R COURSE
course content

Course Content

TEST R COURSE

TEST R COURSE

1. Basic Syntax and Operations
Hello, R!Print?CommentsInteger Division and Remainders
2. Vectors
What is a Vector?NumbersComplex NumbersConverting

bookNumbers

You got "double" as an output in the last chapter, despite the number 10 being an integer. Let's investigate it.

What types can numeric values in R be? Let's remind. These are:

  • numeric/double - real numbers.
  • integer - integer numbers.
  • complex - complex numbers.

But in the last chapter, you got "double" for an integer number. How to make R recognize integer numbers? One of the ways is to simply put L at the end of the number. For example,


              
12

            
typeof(10) # Example of double type
typeof(10L) # Example of integer type
copy

This script will return the next output:

Why do we even need to differentiate 10 and 10L values? The answer is memory consumption - storing integers is 'easier' for computer memory.

Task

  1. Assign the current year's value to the variable year. Make this variable integer type by using L.
  2. Output type of newly created variable year.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 2
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bookNumbers

You got "double" as an output in the last chapter, despite the number 10 being an integer. Let's investigate it.

What types can numeric values in R be? Let's remind. These are:

  • numeric/double - real numbers.
  • integer - integer numbers.
  • complex - complex numbers.

But in the last chapter, you got "double" for an integer number. How to make R recognize integer numbers? One of the ways is to simply put L at the end of the number. For example,


              
12

            
typeof(10) # Example of double type
typeof(10L) # Example of integer type
copy

This script will return the next output:

Why do we even need to differentiate 10 and 10L values? The answer is memory consumption - storing integers is 'easier' for computer memory.

Task

  1. Assign the current year's value to the variable year. Make this variable integer type by using L.
  2. Output type of newly created variable year.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 2
toggle bottom row

bookNumbers

You got "double" as an output in the last chapter, despite the number 10 being an integer. Let's investigate it.

What types can numeric values in R be? Let's remind. These are:

  • numeric/double - real numbers.
  • integer - integer numbers.
  • complex - complex numbers.

But in the last chapter, you got "double" for an integer number. How to make R recognize integer numbers? One of the ways is to simply put L at the end of the number. For example,


              
12

            
typeof(10) # Example of double type
typeof(10L) # Example of integer type
copy

This script will return the next output:

Why do we even need to differentiate 10 and 10L values? The answer is memory consumption - storing integers is 'easier' for computer memory.

Task

  1. Assign the current year's value to the variable year. Make this variable integer type by using L.
  2. Output type of newly created variable year.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

You got "double" as an output in the last chapter, despite the number 10 being an integer. Let's investigate it.

What types can numeric values in R be? Let's remind. These are:

  • numeric/double - real numbers.
  • integer - integer numbers.
  • complex - complex numbers.

But in the last chapter, you got "double" for an integer number. How to make R recognize integer numbers? One of the ways is to simply put L at the end of the number. For example,


              
12

            
typeof(10) # Example of double type
typeof(10L) # Example of integer type
copy

This script will return the next output:

Why do we even need to differentiate 10 and 10L values? The answer is memory consumption - storing integers is 'easier' for computer memory.

Task

  1. Assign the current year's value to the variable year. Make this variable integer type by using L.
  2. Output type of newly created variable year.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 2. Chapter 2
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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