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R Environment

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R Environment

R Environment

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    R Environment R Environment Presentation Transcript

    • The environment
      The Dataminingtools.net Team
    • R Environment
      R Console
      Graphic Device
    • R Environment
      R is an integrated suite of software facilities for data manipulation, calculation and graphical display. Some of it features are:
      an efficient data handling and storage system
      a set of operators for calculations on arrays
      a large collection of intermediate tools for data analysis,
      graphical facilities for data analysis and display
      a well developed, simple and effective programming language S
    • Help
      To get more information on any specific named function, the command is:
      help(command name)
      or
      ?command_name
      This would open the html help documentation in the default browser.
    • Case Sensitivity
      R is an expression language with a very simple syntax. It is case sensitive as are most UNIX based packages, so E and e are different symbols and would refer to different variables.
    • Data Input
      The ‘c’ command:
      To create a new variable ‘var1’, use the c command in the following way:
      var1 <- c(3,5,7,9)
    • Data Input
      The ‘c’ command:
      You can see the value of a variable by typing its name and required parameters as follows:
    • Scanning Input
      Data can be scanned form the console using the ‘scan()’ function
    • Removing objects
      Objects can be removed using the ‘rm’ command: