Difference between revisions of "R/C2/Introduction-to-RStudio/English"

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<div style="margin-left:0in;margin-right:0in;">'''Title of script''': Introduction to R Studio</div>
+
'''Title of script''': Introduction to R Studio
  
<div style="margin-left:0in;margin-right:0in;">'''Authors''': Shaik Sameer (IIIT Vadodara) and Sudhakar Kumar (IIT Bombay)</div>
+
'''Authors''': Shaik Sameer (IIIT Vadodara) and Sudhakar Kumar (IIT Bombay)
  
<div style="margin-left:0in;margin-right:0in;">'''Keywords''': R, RStudio, workspace, console, packages</div>
+
'''Keywords''': R, RStudio, workspace, console, packages, video tutorial
  
 
+
{| border =1
{| style="border-spacing:0;width:7.3958in;"
+
|'''Visual Cue'''
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|'''Narration'''
| align=center| '''Visual Cue'''
+
|-
| align=center| '''Narration'''
+
|| Show slide  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|| Show slide
+
  
 
Opening slide
 
Opening slide
|| <span style="background-color:#ffffff;">Welcome to this tutorial on </span><span style="background-color:#ffffff;">'''Introduction to R Studio.'''</span>
+
|| Welcome to this tutorial on '''Introduction to R Studio.'''
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show slide
 
|| Show slide
  
 
Objectives
 
Objectives
|| In this tutorial,''' '''you will learn about these features of '''RStudio''':* <div style="margin-left:0.7665in;margin-right:0in;">'''Source '''and '''Console '''windows </div>
+
|| In this tutorial, you will learn about these features of '''RStudio''':
* <div style="margin-left:0.7665in;margin-right:0in;">'''Workspace; Plots '''and '''Files '''window</div>
+
* '''Source '''and '''Console '''windows  
* <div style="margin-left:0.7665in;margin-right:0in;">How to install '''packages''' of '''R'''</div>
+
* '''Workspace; Plots '''and '''Files '''window
 +
* How to install '''packages''' of '''R'''
  
 
+
|-
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
 
|| Show slide
 
|| Show slide
  
 
Pre-requisites
 
Pre-requisites
  
 
+
|| To understand this tutorial, you should know:  
 
+
* Elementary Maths  
|| To understand this tutorial, you should know: * <div style="margin-left:0.7665in;margin-right:0in;">Elementary Maths </div>
+
* Basic commands of''' R'''
* <div style="margin-left:0.7665in;margin-right:0in;">Basic commands of''' R'''</div>
+
 
+
 
+
  
 
If not, please locate the relevant tutorials on '''R''' on this website.
 
If not, please locate the relevant tutorials on '''R''' on this website.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show slide
 
|| Show slide
  
 
Systems requirements
 
Systems requirements
  
 
+
|| This tutorial is recorded on
 
+
* '''Ubuntu Linux OS 16.04'''  
|| This tutorial is recorded on* <div style="margin-left:0.7665in;margin-right:0in;">'''Ubuntu Linux OS 16.04''' </div>
+
* '''R '''version''' 3.2.3 '''
* <div style="margin-left:0.7665in;margin-right:0in;">'''R '''version''' 3.2.3 '''</div>
+
* '''RStudio''' version''' 1.1.456'''
* <div style="margin-left:0.7665in;margin-right:0in;">'''RStudio''' version''' 1.1.456'''</div>
+
 
+
 
+
  
 
Install '''R''' version '''3.2.0''' or higher.
 
Install '''R''' version '''3.2.0''' or higher.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| [RStudio]
 
|| [RStudio]
  
 
RStudio window  
 
RStudio window  
|| Let us switch to&nbsp;'''RStudio'''.
+
|| Let us switch to '''RStudio'''.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''Source '''window
 
|| Highlight the '''Source '''window
 
|| The window in the top left corner is the '''Source''' window.  
 
|| The window in the top left corner is the '''Source''' window.  
 
  
 
It is used to edit a '''script''' and run it.
 
It is used to edit a '''script''' and run it.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''Console '''window
 
|| Highlight the '''Console '''window
 
|| The window in the bottom left corner is the '''Console''' window.  
 
|| The window in the bottom left corner is the '''Console''' window.  
 
  
 
It is used to install '''packages''' or to run a particular '''command'''.
 
It is used to install '''packages''' or to run a particular '''command'''.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''Workspace '''window
 
|| Highlight the '''Workspace '''window
 
  
 
Highlight '''Environment''' tab
 
Highlight '''Environment''' tab
 
|| The upper right window is the '''Workspace''' window.  
 
|| The upper right window is the '''Workspace''' window.  
  
 
+
It stores all the '''variables''' used during execution of '''commands''' under the '''Environment''' tab.
It stores all the variables used during execution of commands under the '''Environment''' tab.
+
|-
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
 
|| Place cursor on the inside edges of all the windows.  
 
|| Place cursor on the inside edges of all the windows.  
 
  
 
Point to the four-headed arrow.  
 
Point to the four-headed arrow.  
 
|| Place your cursor on the inside edges of all the windows.  
 
|| Place your cursor on the inside edges of all the windows.  
 
  
 
A four-headed arrow symbol appears.  
 
A four-headed arrow symbol appears.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Drag this to resize windows for better visibility.  
 
|| Drag this to resize windows for better visibility.  
 
|| You can drag this to resize your windows for better visibility.  
 
|| You can drag this to resize your windows for better visibility.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
|| Let us declare some variables.  
+
|| Let us declare some '''variables'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Type '''testSample <- c(1,2,3,4)''' in '''Console'''
 
|| Type '''testSample <- c(1,2,3,4)''' in '''Console'''
 
|| In the '''Console''', type '''testSample (capital S) '''space '''less than''' symbol followed by '''hyphen '''space '''c. '''
 
|| In the '''Console''', type '''testSample (capital S) '''space '''less than''' symbol followed by '''hyphen '''space '''c. '''
 
  
 
Now, in '''parentheses''', type 1 comma 2 comma 3 comma 4.  
 
Now, in '''parentheses''', type 1 comma 2 comma 3 comma 4.  
 
  
 
Press '''Enter''' to execute this line.  
 
Press '''Enter''' to execute this line.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''testSample''' in Environment tab
 
|| Highlight the '''testSample''' in Environment tab
|| You can see the variable '''testSample''' in the '''Environment '''window.
+
|| You can see the '''variable testSample''' in the '''Environment '''window.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''Plots '''and '''Files '''window
 
|| Highlight the '''Plots '''and '''Files '''window
 
|| The lower right window is the '''Plots '''and''' Files''' window.  
 
|| The lower right window is the '''Plots '''and''' Files''' window.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''Files''' tab
 
|| Highlight the '''Files''' tab
 
+
|| The '''Files''' tab is used to keep track of '''Working Directories'''.  
 
+
Highlight the '''Plots''' tab
+
|| '''The Files''' tab is used to keep track of '''Working Directories'''.  
+
  
 
We will learn more about '''Working Directory''' later in this series.  
 
We will learn more about '''Working Directory''' later in this series.  
 
+
|-
 
+
|| Highlight the '''Plots''' tab
The''' Plots''' tab shows all the '''graphical output'''.  
+
|| The''' Plots''' tab shows all the '''graphical output'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
|| Let us plot the variable '''testSample'''.  
+
|| Let us plot the '''variable testSample'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Type '''plot(testSample)''' in the Console window
 
|| Type '''plot(testSample)''' in the Console window
 
  
 
Highlight the output plot  
 
Highlight the output plot  
 
|| In the '''Console''', type '''plot testSample capital S in parentheses. '''Press '''Enter'''.  
 
|| In the '''Console''', type '''plot testSample capital S in parentheses. '''Press '''Enter'''.  
 
  
 
You can now see the plot in the '''Plots '''window.
 
You can now see the plot in the '''Plots '''window.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the '''Environment '''tab
 
|| Highlight the '''Environment '''tab
 
|| Let us look at the '''Environment '''window in the upper right corner.  
 
|| Let us look at the '''Environment '''window in the upper right corner.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight '''testSample'''
 
|| Highlight '''testSample'''
 
  
 
Highlight broom-shaped icon in '''Environment '''
 
Highlight broom-shaped icon in '''Environment '''
 
|| We will clear this '''variable''' in this window.  
 
|| We will clear this '''variable''' in this window.  
 
  
 
At the top of the '''Environment''' window, click on the broom icon.  
 
At the top of the '''Environment''' window, click on the broom icon.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| In '''Confirm Remove Objects''' window >> check '''Include hidden objects''' >> click on '''Yes'''
 
|| In '''Confirm Remove Objects''' window >> check '''Include hidden objects''' >> click on '''Yes'''
 
|| A '''Confirm Remove Objects''' window appears.  
 
|| A '''Confirm Remove Objects''' window appears.  
 
  
 
Ensure that the box '''Include hidden objects''' is checked and click on '''Yes'''.  
 
Ensure that the box '''Include hidden objects''' is checked and click on '''Yes'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight '''Environment '''tab
 
|| Highlight '''Environment '''tab
 
|| Now, there is no '''variable '''in the '''Environment'''.  
 
|| Now, there is no '''variable '''in the '''Environment'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Click in the '''Plots '''window and click on the broom icon.  
 
|| Click in the '''Plots '''window and click on the broom icon.  
 
|| Click in the '''Plots '''window and click on the broom icon.  
 
|| Click in the '''Plots '''window and click on the broom icon.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Point to Clear Plots text box.
 
|| Point to Clear Plots text box.
|| A Clear Plots text box appears.
+
|| A '''Clear Plots''' text box appears.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Point to Clear Plots text box.
 
|| Point to Clear Plots text box.
|| The text reads, “Are you sure you want to clear all of the plots in the history?”
+
|| The text reads, '''“Are you sure you want to clear all of the plots in the history?”'''
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Click Yes.  
 
|| Click Yes.  
|| Click Yes.  
+
|| Click '''Yes'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Type plot('''testSample''') in the '''Console '''window
 
|| Type plot('''testSample''') in the '''Console '''window
|| Now, let us try plotting this variable again.  
+
|| Now, let us try plotting this '''variable''' again.  
 
+
  
 
In the '''Console''', again type '''plot testSample '''in '''parentheses''' as before.
 
In the '''Console''', again type '''plot testSample '''in '''parentheses''' as before.
  
 
Press '''Enter'''.  
 
Press '''Enter'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the error in the '''Console '''window
 
|| Highlight the error in the '''Console '''window
 
  
 
Highlight broom-shaped icon in '''Environment '''
 
Highlight broom-shaped icon in '''Environment '''
 
|| No plot is generated.  
 
|| No plot is generated.  
 
  
 
Instead, we see:  
 
Instead, we see:  
 
 
'''Error in plot(testSample) : object 'testSample' not found'''
 
'''Error in plot(testSample) : object 'testSample' not found'''
  
 
+
It means that the '''variable testSample '''has been removed from our '''Workspace. '''
It means that the variable '''testSample '''has been removed from our '''Workspace. '''
+
 
+
  
 
So, you should be careful with this broom icon in the '''Environment '''window.  
 
So, you should be careful with this broom icon in the '''Environment '''window.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
  
 
'''History '''tab  
 
'''History '''tab  
 
  
 
Highlight the commands
 
Highlight the commands
Line 198: Line 167:
  
 
Here, we can see the lines that have been executed so far.  
 
Here, we can see the lines that have been executed so far.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
|| Let us declare two variables, '''firstVar''' and '''secondVar''', which will be used later.  
+
|| Let us declare two '''variables, firstVar''' and '''secondVar''', which will be used later.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| [Console]
 
|| [Console]
 
  
 
Type '''firstVar <- 6'''
 
Type '''firstVar <- 6'''
 
+
|| In the '''Console''', type '''first capital V a r '''space '''less than''' symbol followed by '''hyphen '''space 6.  
Type '''secondVar <- 8'''
+
|| In the Console, type '''first capital V a r '''space '''less than''' symbol followed by '''hyphen '''space 6.  
+
 
+
  
 
Press '''Enter'''.  
 
Press '''Enter'''.  
 +
|-
 +
|| [Console]
  
 
+
Type '''secondVar <- 8'''
Next, type '''second capital V a r '''space '''less than''' symbol followed by '''hyphen '''space 8.  
+
|| Next, type '''second capital V a r '''space '''less than''' symbol followed by '''hyphen '''space 8.  
  
 
Press '''Enter'''.  
 
Press '''Enter'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| [RStudio]
 
|| [RStudio]
  
Line 225: Line 192:
 
We need to clean the '''Console''' before moving on.  
 
We need to clean the '''Console''' before moving on.  
  
Click in the '''Console''' window and press '''Ctrl+L together. '''
+
Click in the '''Console''' window and press '''Ctrl+L''' together.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Highlight the broom-shaped icon at the right corner of the '''Console '''window
 
|| Highlight the broom-shaped icon at the right corner of the '''Console '''window
|| Clicking on the''' '''broom icon in the upper right corner of the '''Console''' will also clear it.
+
|| Clicking on the broom icon in the upper right corner of the '''Console''' will also clear it.
  
To see this icon, place the cursor under the maximizer button of the '''Console '''window.  
+
To see this icon, place the cursor under the '''maximizer''' button of the '''Console '''window.  
  
 
You will see a hand symbol and the text, '''Clear Console Ctrl+L'''.  
 
You will see a hand symbol and the text, '''Clear Console Ctrl+L'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show slide  
 
|| Show slide  
  
 
Packages in R  
 
Packages in R  
|| <span style="background-color:#ffffff;">'''R packages'''</span><span style="background-color:#ffffff;"> are </span>* <div style="margin-left:0.7665in;margin-right:0in;">A collection of''' R functions, compiled code '''and sample data</div>
+
|| '''R packages''' are
* <div style="margin-left:0.7665in;margin-right:0in;">Stored under a directory called'''&nbsp;library'''&nbsp;in the '''R environment'''.</div>
+
* A collection of''' R functions, compiled code '''and sample data  
 +
* Stored under a '''directory''' called '''library '''in the '''R environment'''.  
  
 
+
By default, '''R''' installs a set of '''packages'''
 
+
|-
<span style="background-color:#ffffff;">By default, </span><span style="background-color:#ffffff;">'''R'''</span><span style="background-color:#ffffff;"> installs a set of </span><span style="background-color:#ffffff;">'''packages'''</span><span style="background-color:#ffffff;">.</span>
+
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
 
||  
 
||  
 
|| Let us switch back to '''RStudio. '''
 
|| Let us switch back to '''RStudio. '''
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Click on the Environment tab again.  
 
|| Click on the Environment tab again.  
|| Now click on the Environment tab again.  
+
|| Now click on the '''Environment''' tab again.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| [RStudio]
 
|| [RStudio]
  
 
Type '''library()'''
 
Type '''library()'''
|| To see the list of '''R packages''' installed in your system, type '''library parentheses''' in the '''Console.'''
+
|| To see the list of '''R packages''' installed in your system, in the '''Console''', type '''library parentheses'''.
  
 
Press '''Enter'''.  
 
Press '''Enter'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Tab '''R packages available '''opens in '''Source''' window
 
|| Tab '''R packages available '''opens in '''Source''' window
|| A tab named '''R packages available '''opens up in '''Source''' window.''' '''
+
|| A tab named '''R packages available '''opens up in '''Source''' window.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
|| Let us install a new package named '''MASS'''. Please make sure that you are connected to the '''Internet'''.  
+
|| Let us install a new '''package''' named '''MASS'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
 
 +
Please make sure that you are connected to the '''Internet'''.  
 +
|-
 
|| [Console]
 
|| [Console]
  
Type '''install.packages(<span style="background-color:#ffffff;">"MASS"</span>)'''  
+
Type '''install.packages("MASS")'''  
  
 
Highlight the red dot at the right corner of '''Console'''
 
Highlight the red dot at the right corner of '''Console'''
|| In the '''Console '''window, type '''install dot packages'''.''' '''
+
|| In the '''Console '''window, type '''install dot packages'''.
  
Now''', MASS '''inside double quotes in parentheses.''' '''
+
Now''', MASS '''inside double quotes in parentheses.
  
 
Press '''Enter'''.  
 
Press '''Enter'''.  
Line 276: Line 244:
 
We will need to wait until '''R''' installs the '''package'''.  
 
We will need to wait until '''R''' installs the '''package'''.  
 
|-
 
|-
| style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" |  
+
||  
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | There is another way to install a '''package'''. Let us install another package named '''ggplot2'''.  
+
|| There is another way to install a '''package'''. Let us install another '''package''' named '''ggplot2'''.  
 
|-
 
|-
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | Click on the '''Tools''' button >>  
+
|| Click on the '''Tools''' button >>  
  
 
Select the '''Install Packages''' option  
 
Select the '''Install Packages''' option  
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | In the top menu bar of '''RStudio, '''click on the '''Tools''' button.  
+
|| In the top menu bar of '''RStudio, '''click on the '''Tools''' button.  
  
From the dropdown menu, select the '''Install Packages''' option.  
+
From the drop-down menu, select the '''Install Packages''' option.  
 
|-
 
|-
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | In '''Packages''', type '''ggplot2'''
+
|| In '''Packages''', type '''ggplot2'''
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | In the '''Packages''' field, type the name of the '''package''' '''ggplot2'''
+
|| In the '''Packages''' field, type the name of the '''package ggplot2'''
 +
|-
 +
|| Check the box '''Install dependencies''' >> click on the '''Install '''button
 +
|| Ensure that '''Install dependencies''' box is checked and click on the '''Install''' button.
 
|-
 
|-
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | Check the box '''Install dependencies''' >> click on the '''Install '''button
 
| style="border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;" | Ensure that '''Install dependencies''' box is checked and click on the '''Install''' button.
 
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
 
 
|| [RStudio]
 
|| [RStudio]
  
 
Type '''library(MASS) '''in the Console window  
 
Type '''library(MASS) '''in the Console window  
|| To load a '''package''', we use '''library() function '''and provide the '''package''' name as an '''argument'''.  
+
|| To load a '''package''', we use '''library function '''and provide the '''package''' name as an '''argument'''.  
  
 
We will load the''' MASS package''' now.  
 
We will load the''' MASS package''' now.  
  
In the '''Console '''window, type '''library MASS in parentheses '''and press '''Enter'''.  
+
In the '''Console '''window, type '''library MASS''' in '''parentheses '''and press '''Enter'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
|| Now we will use '''fractions() function''' available in the '''MASS package'''.  
+
|| Now we will use '''fractions function''' available in the '''MASS package'''.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| [RStudio]
 
|| [RStudio]
  
 
+
Type '''f r a c t i o'''.
Type f r a c t i o.
+
  
 
Point to the fractions option.  
 
Point to the fractions option.  
  
Press Enter to select.  
+
Press '''Enter''' to select.  
 +
||
  
 +
In the '''Console '''window, type '''f r a c t'''.
  
 +
'''RStudio''' shows the '''fractions''' option.
  
 +
Press '''Enter''' to select it.
  
 +
You can use this feature while typing '''commands'''.
  
 +
Only remember that '''R''' is case-sensitive.
 +
|-
 +
|| [RStudio]
  
 
+
Type '''fractions(firstVar/secondVar)'''
 
+
'''fractions(firstVar/secondVar)'''
+
 
+
  
 
Highlight '''¾''' in the '''Console '''
 
Highlight '''¾''' in the '''Console '''
  
 
+
|| After '''fractions''', type, in '''parentheses, firstVar''' division slash '''secondVar'''.  
 
+
||  
+
 
+
 
+
 
+
In the '''Console '''window, type f r a c t i o.
+
 
+
RStudio shows the fractions option.
+
 
+
Press Enter to select it.
+
 
+
 
+
'''You can use this feature while typing commands. '''
+
 
+
'''Only remember that R is case-sensitive. '''
+
 
+
 
+
'''After fractions, type, in parentheses, firstVar division slash secondVar. '''
+
 
+
 
+
 
+
  
 
Press '''Enter'''.
 
Press '''Enter'''.
  
 
+
You can see the reduced '''fraction ¾''' in the '''Console. '''
You can see the reduced fraction '''¾''' in the '''Console. '''
+
|-
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
 
|| Type '''firstVar/secondVar''' in the '''Console'''
 
|| Type '''firstVar/secondVar''' in the '''Console'''
  
Line 358: Line 308:
 
Highlight the output in decimal
 
Highlight the output in decimal
 
|| In the '''Console''', we can also type '''firstVar division slash secondVar'''.
 
|| In the '''Console''', we can also type '''firstVar division slash secondVar'''.
 
  
 
It gives the result in decimal form.
 
It gives the result in decimal form.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
||  
 
||  
 
|| This brings us to the end of this tutorial. Let us summarize.
 
|| This brings us to the end of this tutorial. Let us summarize.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show slide
 
|| Show slide
  
 
Summary
 
Summary
  
 +
|| We have learnt about,
 +
* '''Source '''and '''Console '''windows
 +
* '''Workspace; Plots '''and '''Files '''window
 +
* How to install '''packages''' of '''R'''
  
 
+
|-
|| We have learned about, * <div style="margin-left:0.7665in;margin-right:0in;">'''Source '''and '''Console '''windows </div>
+
* <div style="margin-left:0.7665in;margin-right:0in;">'''Workspace; Plots '''and '''Files '''window</div>
+
* <div style="margin-left:0.7665in;margin-right:0in;">How to install '''packages''' of '''R'''</div>
+
 
+
 
+
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|| Show slide
+
 
+
Assignment
+
|| We now suggest an assignment.* <div style="margin-left:0.7665in;margin-right:0in;">Install '''plyr package''' and load it.</div>
+
 
+
 
+
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
 
|| Show slide
 
|| Show slide
  
Line 390: Line 330:
  
 
Please download and watch it.
 
Please download and watch it.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show slide
 
|| Show slide
  
Line 397: Line 337:
  
 
Please contact us.
 
Please contact us.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
|| Show Slide
+
|| Show Slide  
  
 
Forum to answer questions
 
Forum to answer questions
  
 
+
|| Do you have questions in THIS '''Spoken Tutorial?'''  
 
+
|| <span style="background-color:#ffffff;">Do you have questions in THIS </span><span style="background-color:#ffffff;">'''Spoken Tutorial?'''</span>
+
  
 
Choose the minute and second where you have the question.
 
Choose the minute and second where you have the question.
Line 413: Line 351:
  
 
Please visit this site.
 
Please visit this site.
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show Slide
 
|| Show Slide
  
Line 419: Line 357:
 
|| Do you have any general / technical questions?
 
|| Do you have any general / technical questions?
  
Please visit the forum given in the link.
+
Please visit the forum given in the link.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
 
|| Show Slide
 
|| Show Slide
  
 
Textbook Companion
 
Textbook Companion
|| <span style="background-color:#ffffff;">The </span><span style="background-color:#ffffff;">'''FOSSEE '''</span><span style="background-color:#ffffff;">team coordinates coding of solved examples of popular books.</span>
+
|| The '''FOSSEE ''' team coordinates coding of solved examples of popular books.
  
We give honorarium and certificates for those who do this.
+
We give honorarium and certificates for those who do this.  
  
For more details, please visit these sites.
+
For more details, please visit these sites.  
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
|| Show Slide
+
|| Show Slide  
  
 
Acknowledgement
 
Acknowledgement
 
|| The Spoken Tutorial project is funded by NMEICT, MHRD, Govt. of India
 
|| The Spoken Tutorial project is funded by NMEICT, MHRD, Govt. of India
|- style="background-color:#ffffff;border:0.75pt solid #000000;padding-top:0in;padding-bottom:0in;padding-left:0.0799in;padding-right:0.075in;"
+
|-
|| Show Slide
+
|| Show Slide  
  
 
Thank You
 
Thank You
|| This script has been contributed by Shaik (FOSSEE Fellow 2018) and Sudhakar from FOSSEE project.
+
|| This script has been contributed by Shaik (FOSSEE Fellow 2018) and Sudhakar from FOSSEE project.  
 
+
This is Vidhya Iyer from IIT Bombay signing off. Thanks for watching.  
 
+
This is Vidhya Iyer from IIT Bombay signing off. Thanks for watching.
+
 
|-
 
|-
 
|}
 
|}

Latest revision as of 17:42, 4 October 2019

Title of script: Introduction to R Studio

Authors: Shaik Sameer (IIIT Vadodara) and Sudhakar Kumar (IIT Bombay)

Keywords: R, RStudio, workspace, console, packages, video tutorial

Visual Cue Narration
Show slide

Opening slide

Welcome to this tutorial on Introduction to R Studio.
Show slide

Objectives

In this tutorial, you will learn about these features of RStudio:
  • Source and Console windows
  • Workspace; Plots and Files window
  • How to install packages of R
Show slide

Pre-requisites

To understand this tutorial, you should know:
  • Elementary Maths
  • Basic commands of R

If not, please locate the relevant tutorials on R on this website.

Show slide

Systems requirements

This tutorial is recorded on
  • Ubuntu Linux OS 16.04
  • R version 3.2.3
  • RStudio version 1.1.456

Install R version 3.2.0 or higher.

[RStudio]

RStudio window

Let us switch to RStudio.
Highlight the Source window The window in the top left corner is the Source window.

It is used to edit a script and run it.

Highlight the Console window The window in the bottom left corner is the Console window.

It is used to install packages or to run a particular command.

Highlight the Workspace window

Highlight Environment tab

The upper right window is the Workspace window.

It stores all the variables used during execution of commands under the Environment tab.

Place cursor on the inside edges of all the windows.

Point to the four-headed arrow.

Place your cursor on the inside edges of all the windows.

A four-headed arrow symbol appears.

Drag this to resize windows for better visibility. You can drag this to resize your windows for better visibility.
Let us declare some variables.
Type testSample <- c(1,2,3,4) in Console In the Console, type testSample (capital S) space less than symbol followed by hyphen space c.

Now, in parentheses, type 1 comma 2 comma 3 comma 4.

Press Enter to execute this line.

Highlight the testSample in Environment tab You can see the variable testSample in the Environment window.
Highlight the Plots and Files window The lower right window is the Plots and Files window.
Highlight the Files tab The Files tab is used to keep track of Working Directories.

We will learn more about Working Directory later in this series.

Highlight the Plots tab The Plots tab shows all the graphical output.
Let us plot the variable testSample.
Type plot(testSample) in the Console window

Highlight the output plot

In the Console, type plot testSample capital S in parentheses. Press Enter.

You can now see the plot in the Plots window.

Highlight the Environment tab Let us look at the Environment window in the upper right corner.
Highlight testSample

Highlight broom-shaped icon in Environment

We will clear this variable in this window.

At the top of the Environment window, click on the broom icon.

In Confirm Remove Objects window >> check Include hidden objects >> click on Yes A Confirm Remove Objects window appears.

Ensure that the box Include hidden objects is checked and click on Yes.

Highlight Environment tab Now, there is no variable in the Environment.
Click in the Plots window and click on the broom icon. Click in the Plots window and click on the broom icon.
Point to Clear Plots text box. A Clear Plots text box appears.
Point to Clear Plots text box. The text reads, “Are you sure you want to clear all of the plots in the history?”
Click Yes. Click Yes.
Type plot(testSample) in the Console window Now, let us try plotting this variable again.

In the Console, again type plot testSample in parentheses as before.

Press Enter.

Highlight the error in the Console window

Highlight broom-shaped icon in Environment

No plot is generated.

Instead, we see: Error in plot(testSample) : object 'testSample' not found

It means that the variable testSample has been removed from our Workspace.

So, you should be careful with this broom icon in the Environment window.

History tab

Highlight the commands

Next to Environment, the History tab stores all our actions.

Here, we can see the lines that have been executed so far.

Let us declare two variables, firstVar and secondVar, which will be used later.
[Console]

Type firstVar <- 6

In the Console, type first capital V a r space less than symbol followed by hyphen space 6.

Press Enter.

[Console]

Type secondVar <- 8

Next, type second capital V a r space less than symbol followed by hyphen space 8.

Press Enter.

[RStudio]

Press Ctrl+L

Our Console window is filled with the previous commands.

We need to clean the Console before moving on.

Click in the Console window and press Ctrl+L together.

Highlight the broom-shaped icon at the right corner of the Console window Clicking on the broom icon in the upper right corner of the Console will also clear it.

To see this icon, place the cursor under the maximizer button of the Console window.

You will see a hand symbol and the text, Clear Console Ctrl+L.

Show slide

Packages in R

R packages are
  • A collection of R functions, compiled code and sample data
  • Stored under a directory called library in the R environment.

By default, R installs a set of packages

Let us switch back to RStudio.
Click on the Environment tab again. Now click on the Environment tab again.
[RStudio]

Type library()

To see the list of R packages installed in your system, in the Console, type library parentheses.

Press Enter.

Tab R packages available opens in Source window A tab named R packages available opens up in Source window.
Let us install a new package named MASS.

Please make sure that you are connected to the Internet.

[Console]

Type install.packages("MASS")

Highlight the red dot at the right corner of Console

In the Console window, type install dot packages.

Now, MASS inside double quotes in parentheses.

Press Enter.

We will need to wait until R installs the package.

There is another way to install a package. Let us install another package named ggplot2.
Click on the Tools button >>

Select the Install Packages option

In the top menu bar of RStudio, click on the Tools button.

From the drop-down menu, select the Install Packages option.

In Packages, type ggplot2 In the Packages field, type the name of the package ggplot2
Check the box Install dependencies >> click on the Install button Ensure that Install dependencies box is checked and click on the Install button.
[RStudio]

Type library(MASS) in the Console window

To load a package, we use library function and provide the package name as an argument.

We will load the MASS package now.

In the Console window, type library MASS in parentheses and press Enter.

Now we will use fractions function available in the MASS package.
[RStudio]

Type f r a c t i o.

Point to the fractions option.

Press Enter to select.

In the Console window, type f r a c t.

RStudio shows the fractions option.

Press Enter to select it.

You can use this feature while typing commands.

Only remember that R is case-sensitive.

[RStudio]

Type fractions(firstVar/secondVar)

Highlight ¾ in the Console

After fractions, type, in parentheses, firstVar division slash secondVar.

Press Enter.

You can see the reduced fraction ¾ in the Console.

Type firstVar/secondVar in the Console


Highlight the output in decimal

In the Console, we can also type firstVar division slash secondVar.

It gives the result in decimal form.

This brings us to the end of this tutorial. Let us summarize.
Show slide

Summary

We have learnt about,
  • Source and Console windows
  • Workspace; Plots and Files window
  • How to install packages of R
Show slide

About the Spoken Tutorial Project

The video at the following link summarises the Spoken Tutorial project.

Please download and watch it.

Show slide

Spoken Tutorial Workshops

We conduct workshops using Spoken Tutorials and give certificates.

Please contact us.

Show Slide

Forum to answer questions

Do you have questions in THIS Spoken Tutorial?

Choose the minute and second where you have the question.

Explain your question briefly.

Someone from the FOSSEE team will answer them.

Please visit this site.

Show Slide

Forum to answer questions

Do you have any general / technical questions?

Please visit the forum given in the link.

Show Slide

Textbook Companion

The FOSSEE team coordinates coding of solved examples of popular books.

We give honorarium and certificates for those who do this.

For more details, please visit these sites.

Show Slide

Acknowledgement

The Spoken Tutorial project is funded by NMEICT, MHRD, Govt. of India
Show Slide

Thank You

This script has been contributed by Shaik (FOSSEE Fellow 2018) and Sudhakar from FOSSEE project.

This is Vidhya Iyer from IIT Bombay signing off. Thanks for watching.

Contributors and Content Editors

Nancyvarkey, Sudhakarst