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{| border =1
|'''Time'''
|'''Narration'''

|-
|| 00:01
||Welcome to this tutorial on '''Introduction to R Studio.'''

|-
|| 00:06
||In this tutorial, you will learn about these features of '''Rstudio''':

|-
|| 00:13
||'''Source '''and '''Console '''windows

|-
|| 00:15
||'''Workspace; Plots '''and '''Files '''window

|-
|| 00:21
||How to install '''packages''' of '''R'''

|-
|| 00:24
|| To understand this tutorial, you should know:

|-
|| 00:28
||Elementary Maths

|-
|| 00:32
||Basic commands of''' R'''

|-
|| 00:36
||If not, please locate the relevant tutorials on '''R''' on this website.

|-
|| 00:41
|| This tutorial is recorded on

|-
|| 00:44
||'''Ubuntu Linux Operating System 16.04'''

|-
|| 00:49

||'''R '''version''' 3.2.3 '''

|-
|| 00:52
||'''RStudio''' version''' 1.1.456'''

|-
|| 00:58
||Install '''R''' version '''3.2.0''' or higher.

|-
|| 01:04
||Let us switch to '''Rstudio'''.

|-
|| 01:08
||The window in the top left corner is the '''Source''' window.

|-
|| 01:14
||It is used to edit a '''script''' and run it.

|-
|| 01:17
||The window in the bottom left corner is the '''Console''' window.

|-
|| 01:23
||It is used to install '''packages''' or to run a particular '''command'''.

|-
|| 01:28
||The upper right window is the '''Workspace''' window.

|-
|| 01:32
||It stores all the '''variables''' used during execution of '''commands''' under the '''Environment''' tab.

|-
|| 01:40
||Place your cursor on the inside edges of all the windows.

|-
|| 01:46
||A four-headed arrow symbol appears.

|-
|| 01:50
||You can drag this to resize your windows for better visibility.

|-
|| 01:56
||Let us declare some '''variables'''.

|-
|| 01:59
||In the '''Console''', type '''testSample (capital S) '''space '''less than''' symbol followed by '''hyphen '''space '''c. '''

|-
|| 02:11
||Now, in '''parentheses''', type 1 comma 2 comma 3 comma 4.

|-
|| 02:18
||Press '''Enter''' to execute this line.

|-
|| 02:21
||You can see the '''variable testSample''' in the '''Environment '''window.

|-
|| 02:28
||The lower right window is the '''Plots '''and''' Files''' window.

|-
|| 02:33
||The '''Files''' tab is used to keep track of '''Working Directories'''.

|-
|| 02:38
||We will learn more about '''Working Directory''' later in this series.

|-
|| 02:43
||The''' Plots''' tab shows all the '''graphical output'''.

|-
|| 02:46
||Let us plot the '''variable testSample'''.

|-
|| 02:50
||In the '''Console''', type '''plot testSample capital S in parentheses. '''Press '''Enter'''.

|-
|| 02:59
||You can now see the plot in the '''Plots '''window.

|-
|| 03:04
||Let us look at the '''Environment '''window in the upper right corner.

|-
|| 03:09
||We will clear this '''variable''' in this window.

|-
|| 03:12
||At the top of the '''Environment''' window, click on the broom icon.

|-
|| 03:18
||A '''Confirm Remove Objects''' window appears.

|-
|| 03:22
||Ensure that the box '''Include hidden objects''' is checked and click on '''Yes'''.

|-
|| 03:30
||Now, there is no '''variable '''in the '''Environment'''.

|-
|| 03:33
||Click in the '''Plots '''window and click on the broom icon.

|-
|| 03:39
||A '''Clear Plots''' text box appears.

|-
|| 03:44
||The text reads, '''“Are you sure you want to clear all of the plots in the history?”'''

|-
|| 03:50
||Click '''Yes'''.

|-
|| 03:52
||Now, let us try plotting this '''variable''' again.

|-
|| 03:56
||In the '''Console''', again type '''plot testSample '''in '''parentheses''' as before.

|-
|| 04:04
||Press '''Enter'''.

|-
|| 04:06
||No plot is generated.

|-
|| 04:08
||Instead, we see:

|-
|| 04:10
||'''Error in plot(testSample) : object 'testSample' not found'''

|-
|| 04:16
||It means that the '''variable testSample '''has been removed from our '''Workspace. '''

|-
|| 04:22
||So, you should be careful with this broom icon in the '''Environment '''window.

|-
|| 04:27
||Next to '''Environment''', the '''History''' tab stores all our actions.

|-
|| 04:34
||Here, we can see the lines that have been executed so far.

|-
|| 04:40
||Let us declare two '''variables, firstVar''' and '''secondVar''', which will be used later.

|-
|| 04:47
||In the '''Console''', type '''first capital V a r '''space '''less than''' symbol followed by '''hyphen '''space 6.

|-
|| 05:00
||Press '''Enter'''.

|-
|| 05:02
||Next, type '''second capital V a r '''space '''less than''' symbol followed by '''hyphen '''space 8. Press '''Enter'''.

|-
|| 05:14
||Our '''Console '''window is filled with the previous '''commands'''.

|-
|| 05:18
||We need to clean the '''Console''' before moving on.

|-
|| 05:23
||Click in the '''Console''' window and press '''Ctrl+L''' together.

|-
|| 05:28
||Clicking on the broom icon in the upper right corner of the '''Console''' will also clear it.

|-
|| 05:35
||To see this icon, place the cursor under the '''maximizer''' button of the '''Console '''window.

|-
|| 05:42
||You will see a hand symbol and the text, '''Clear Console Ctrl+L'''.

|-
|| 05:48
||Packages in R

|-
|| 05:50
||'''R packages''' are a collection of''' R functions, compiled code '''and sample data.

|-
|| 05:57
||Stored under a '''directory''' called '''library '''in the '''R environment'''.

|-
|| 06:01
||By default, '''R''' installs a set of '''packages'''

|-
|| 06:07
||Let us switch back to '''RStudio. '''

|-
|| 06:10
||Now click on the '''Environment''' tab again.

|-
|| 06:14
||To see the list of '''R packages''' installed in your system, in the '''Console''', type '''library parentheses'''.

|-
|| 06:22
||Press '''Enter'''.
|-
|| 06:24
||A tab named '''R packages available '''opens up in '''Source''' window.

|-
|| 06:30
||Let us install a new '''package''' named '''MASS'''.

|-
|| 06:34
||Please make sure that you are connected to the '''Internet'''.

|-
|| 06:39
||In the '''Console '''window, type '''install dot packages'''.

|-
|| 06:44
||Now''', MASS '''inside double quotes in parentheses.

|-
|| 06:50
||Press '''Enter'''.

|-
|| 06:54
||We will need to wait until '''R''' installs the '''package'''.

|-
|| 06:59
||There is another way to install a '''package'''. Let us install another '''package''' named '''ggplot2'''.

|-
|| 07:07
||In the top menu bar of '''RStudio, '''click on the '''Tools''' button.

|-
|| 07:16
||From the drop-down menu, select the '''Install Packages''' option.

|-
|| 07:21
|| In the '''Packages''' field, type the name of the '''package ggplot2'''

|-
|| 07:28
||Ensure that '''Install dependencies''' box is checked and click on the '''Install''' button.

|-
|| 07:37
||To load a '''package''', we use '''library function '''and provide the '''package''' name as an '''argument'''.

|-
|| 07:46
||We will load the''' MASS package''' now.

|-
|| 07:49
||In the '''Console '''window, type '''library MASS''' in '''parentheses '''and press '''Enter'''.

|-
|| 07:57
|| Now we will use '''fractions function''' available in the '''MASS package'''.

|-
|| 08:04
||In the '''Console '''window, type '''f r a c t'''.

|-
|| 08:10
||'''RStudio''' shows the '''fractions''' option.

|-
|| 08:14
||Press '''Enter''' to select it.

|-
|| 08:17
||You can use this feature while typing '''commands'''.

|-
|| 08:21
||Only remember that '''R''' is case-sensitive.

|-
|| 08:24
||After '''fractions''', type, in '''parentheses, firstVar''' division slash '''secondVar'''.

|-
|| 08:34
||Press '''Enter'''.

|-
|| 08:36
||You can see the reduced '''fraction ¾''' in the '''Console. '''

|-
|| 08:41
||In the '''Console''', we can also type '''firstVar division slash secondVar'''.

|-
|| 08:48
||It gives the result in decimal form.
|-
|| 08:52
||This brings us to the end of this tutorial. Let us summarize.

|-
|| 08:58
||We have learnt about, '''Source '''and '''Console '''windows. '''Source '''and '''Console '''windows
|-

|| 09:02
||'''Workspace; Plots '''and '''Files '''window

|-
|| 09:04
||How to install '''packages''' of '''R'''

|-
|| 09:08
|| The video at the following link summarises the Spoken Tutorial project.

|-
|| 09:12
||Please download and watch it.

|-
|| 09:16
||We conduct workshops using Spoken Tutorials and give certificates.

|-
|| 09:22
||Please contact us.

|-
|| 09:24
||Do you have questions in THIS '''Spoken Tutorial?'''

|-
|| 09:27
||Choose the minute and second where you have the question.

|-
|| 09:31
||Explain your question briefly.

|-
|| 09:33
||Someone from the '''FOSSEE''' team will answer them.

|-
|| 09:35
||Please visit this site.

|-
|| 09:38
||Do you have any general / technical questions?

|-
|| 09:41
||Please visit the forum given in the link.

|-
|| 09:45
||The '''FOSSEE ''' team coordinates coding of solved examples of popular books.

|-
|| 09:52
||We give honorarium and certificates for those who do this.

|-
|| 09:57
||For more details, please visit these sites.

|-
|| 10:01
||The Spoken Tutorial project is funded by MHRD, Govt. of India

|-
|| 10:07
||This script has been contributed by Shaik (FOSSEE Fellow 2018) and Sudhakar from FOSSEE project.

|-
|| 10:15
||This is Vidhya Iyer from IIT Bombay signing off. Thanks for watching.

|-
|}

R/C2/Introduction-to-RStudio/English-timed - Revision history

Sakinashaikh: Created page with " {| border =1 |'''Time''' |'''Narration''' |- || 00:01 ||Welcome to this tutorial on '''Introduction to R Studio.''' |- || 00:06 ||In this tutorial, you will learn about t..."