R/C2/Lists-and-its-Operations/English - Revision history

Madhurig at 16:55, 26 April 2019

2019-04-26T16:55:54Z

Nancyvarkey at 03:45, 25 April 2019

2019-04-25T03:45:21Z

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Sudhakarst at 11:54, 22 April 2019

2019-04-22T11:54:48Z

Sudhakarst at 11:53, 22 April 2019

2019-04-22T11:53:47Z

Sudhakarst at 11:53, 22 April 2019

2019-04-22T11:53:07Z

Sudhakarst at 11:52, 22 April 2019

2019-04-22T11:52:42Z

Sudhakarst at 11:51, 22 April 2019

2019-04-22T11:51:20Z

Sudhakarst at 11:50, 22 April 2019

2019-04-22T11:50:57Z

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Sudhakarst at 11:38, 22 April 2019

2019-04-22T11:38:34Z

Sudhakarst at 11:37, 22 April 2019

2019-04-22T11:37:38Z

@@ Line 12: / Line 12: @@
 Opening slide
-|| Welcome to the spoken tutorial on''' Lists and its Operations'''.
+|| Welcome to the spoken tutorial on '''Lists and its Operations'''.
 |-
 || Show slide
@@ Line 29: / Line 29: @@
 Pre-requisites
-spoken-tutorial.org
+https://spoken-tutorial.org
 || To understand this tutorial, you should know,
@@ Line 50: / Line 50: @@
 Download files
-|| For this tutorial, we will use
+|| For this tutorial, we will use,
 * A '''data frame CaptaincyData.csv''' and
@@ Line 72: / Line 72: @@
 || Open the '''script myList.R '''in''' RStudio'''.
 |-
-||
+|| Drag the boundary of the window.
 || I am resizing the '''Source''' window
 |-
@@ Line 116: / Line 116: @@
 ||Save the '''script''' and run the last three lines of code by pressing '''Ctrl + Enter''' keys simultaneously.
 |-
-||
+|| Drag the boundary of the window
 || I am resizing the '''Source''' window
 |-
@@ Line 144: / Line 144: @@
 ||
 * A '''vector''' having all '''elements''' of the same '''type''' is called '''atomic vector''', whereas
-* A '''vector''' having '''elements''' of different '''types''' is called '''list'''
+* A '''vector''' having '''elements''' of different '''types''' is called '''list'''.
 |-
@@ Line 155: / Line 155: @@
 || We will create a '''list''' containing '''captaincy, matrixA''' and '''myVector'''.
 |-
-||
+|| Drag the boundary of the window.
 || I am resizing the '''Source''' window
 |-
@@ Line 189: / Line 189: @@
 || In the '''Source''' window, now type '''print, myList '''in parentheses.
 |-
-||
+|| Highlight the output in the '''Console''' window.
-Highlight the output in the '''Console''' window
+Drag the boundary of the console window.
 || Run the last three lines of code.
@@ Line 205: / Line 205: @@
 || Now, we will learn how to access the '''elements''' of a '''list'''.
 |-
-||
+|| Drag the boundary of the console window.
 || I am resizing the '''Console''' window.
 |-
-||
+|| Cursor on the interface.
 || '''Elements''' of the '''list''' can be accessed by the '''index''' of the '''elements''' in the '''list'''. It is also known as '''indexing'''.

@@ Line 146: / Line 146: @@
 |-
 ||
-|| Let us switch to&nbsp;'''RStudio'''.
+|| Let us switch to '''RStudio'''.
 |-
 || [RStudio]
@@ Line 249: / Line 249: @@
 [RStudio]
 '''myList[[2]][,3]'''
 || For this, we use double square brackets.
 In the '''Source''' window, type the following command.
@@ Line 266: / Line 264: @@
 Highlight [,3] in the '''Source''' window
 || comma 3 in single square brackets denotes that third column of second element is to be accessed.
 Remember we use single square bracket notation with two indices for indexing a data frame.
@@ Line 284: / Line 281: @@
 |-
 || [RStudio]
 '''listSimple <- list("One", "Two", "Three")'''
@@ Line 294: / Line 290: @@
 |-
 || [RStudio]
 '''merged.list <- c(myList, listSimple)'''
@@ Line 329: / Line 324: @@
 * Perform indexing on '''lists'''
 * Combine two '''lists'''
 |-
@@ Line 354: / Line 348: @@
 Spoken Tutorial Workshops
 || We conduct workshops using Spoken Tutorials and give certificates.
 Please contact us.
@@ Line 384: / Line 377: @@
 Thank You
 || The script for this tutorial was contributed by Shaik Sameer (FOSSEE Fellow 2018).
 This is Sudhakar Kumar from IIT Bombay signing off. Thanks for watching.
 |-
 |}

@@ Line 268: / Line 268: @@
-Remember we use single square bracket
+Remember we use single square bracket notation with two indices for indexing a data frame.
-−
 notation with two indices for indexing a data frame.
-−
 First index and second index refer to row and column respectively.
-Also, leaving an index blank indicates that we
+Also, leaving an index blank indicates that we want to keep all the elements in that dimension.
-−
 want to keep all the elements in that dimension.
 |-
 || Highlight '''Run''' button in the '''Source''' window

@@ Line 176: / Line 176: @@
 Highlight '''vector''' in the '''Source''' window
-|| We will assign the following names,* '''dataframe''' to '''captaincy'''.
+|| We will assign the following names,
 * '''matrix''' to '''matrixA'''
 * '''vector''' to '''myVector'''

@@ Line 127: / Line 127: @@
 List in R
-|| A '''list'''&nbsp;is an R object.
+|| A '''list''' is an R object.
-It has components of mixed data types like * strings
+It has components of mixed data types like
 * numbers
 * vectors
@@ Line 178: / Line 179: @@
 * '''matrix''' to '''matrixA'''
 * '''vector''' to '''myVector'''
 |-
 || [RStudio]
 '''print(myList)'''
@@ Line 191: / Line 190: @@
 Highlight the output in the '''Console''' window
 || Run the last three lines of code.
 I am resizing the '''Console''' window.
 In the '''Console''' window, three elements of '''myList''' are shown with their respective names.
@@ Line 253: / Line 250: @@
-'''<nowiki>myList[[2]][,3]</nowiki>'''
+'''myList[[2]][,3]'''
 || For this, we use double square brackets.
@@ Line 261: / Line 258: @@
 || [RStudio]
-<nowiki>Highlight [[2]] in the </nowiki>'''Source''' window
+Highlight [[2]] in the '''Source''' window
 || 2 in double square brackets denotes that second element of '''myList''' is to be accessed.
 |-
@@ Line 306: / Line 303: @@
 '''print(merged.list) '''
 || Now, we declare an object named '''merged dot list.'''

@@ Line 6: / Line 6: @@
 {| border =1
-|'''Visual Cue’’’
+|'''Visual Cue'''
-|'''Narration’’’
+|'''Narration'''
 |-
 || Show slide
@@ Line 51: / Line 51: @@
 Download files
 || For this tutorial, we will use
 * A '''data frame CaptaincyData.csv''' and

@@ Line 9: / Line 9: @@
 |'''Narration'''
 |-
 || Show slide
@@ Line 14: / Line 15: @@
 || Welcome to the spoken tutorial on''' Lists and its Operations'''.
 |-
 || Show slide
@@ Line 20: / Line 23: @@
 || In this tutorial, we will learn how to:
 * Create a '''list''' in R
 * Access the elements of a '''list'''