R - Command line arguments and user keyboard input
Video Chapters (table of content with clickable links into a specific part of the video)
00:00 Introduction about the video content
00:42 Prerequisites (you should have some programming skills in at least some language)
01:08 Command prompt (showing the installed R version)
01:19 Showing the interactive R console
02:40 Showing that I am starting from an empty directory and starts Visual Studio Code
02:57 Creates an R file with a "Hello World" script
03:21 Executes "Hello World"
03:29 Replaces the implementation with code receiving arguments from the command line and the keyboard
10:11 Executes (as RScript) the script receiving arguments from the command line and the keyboard
11:28 Executes (from the R console) the script receiving arguments from the command line and the keyboard
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Playlists for "Program arguments from command line and keyboard input" for different programming languages:
Playlist for the videos with english voice and english subtitles:
• Program arguments from command line a...
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• Program argument från kommandoraden o...
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R playlist (swedish):
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R
https://www.r-project.org/
https://en.wikipedia.org/wiki/R_(prog...)
R Language Definition
https://cran.r-project.org/doc/manual...
The R version used in the video is 4.2.0 but some links below leads to version 3.6.2 since that seem to be the latest version with documentation pages currently available.
( See for example the github issue 'Add pages for R4.0.5/ R4.1.0 ' https://github.com/datacamp/rdocument... )
RScript
https://www.rdocumentation.org/packag...
R CMD BATCH
https://www.rdocumentation.org/packag...
Function 'c' creates a vector
https://www.rdocumentation.org/packag...
Function 'cat' prints text to the screen
https://www.rdocumentation.org/packag...
Function 'commandArgs' with the argument 'trailingOnly'
https://www.rdocumentation.org/packag...
Function 'readLines' can read input from the keyboard
https://www.rdocumentation.org/packag...
Function 'readline' can read input from the keyboard
https://www.rdocumentation.org/packag...
Function 'interactive'
https://www.rdocumentation.org/packag...
'for loops'
https://cran.r-project.org/doc/manual...
'How to pass command-line arguments when calling source() on an R file within another R file'
(stack overflow page, shown in the video at the time 11:45)
https://stackoverflow.com/questions/1...
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