R Environment

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1. The environment<br />The Dataminingtools.net Team<br /> 2. R Environment<br />R Console<br />Graphic Device<br /> 3. R Environment<br…
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  • 1. The environment<br />The Dataminingtools.net Team<br />
  • 2. R Environment<br />R Console<br />Graphic Device<br />
  • 3. R Environment<br />R is an integrated suite of software facilities for data manipulation, calculation and graphical display. Some of it features are:<br />an efficient data handling and storage system<br />a set of operators for calculations on arrays<br />a large collection of intermediate tools for data analysis,<br />graphical facilities for data analysis and display<br />a well developed, simple and effective programming language S<br />
  • 4. Help<br /> To get more information on any specific named function, the command is:<br />help(command name)<br />or<br />?command_name<br />This would open the html help documentation in the default browser.<br />
  • 5. Case Sensitivity<br />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. <br />
  • 6. Data Input<br />The ‘c’ command:<br />To create a new variable ‘var1’, use the c command in the following way:<br />var1 &lt;- c(3,5,7,9) <br />
  • 7. Data Input<br />The ‘c’ command:<br />You can see the value of a variable by typing its name and required parameters as follows:<br />
  • 8. Scanning Input<br />Data can be scanned form the console using the ‘scan()’ function<br />
  • 9. Removing objects<br />Objects can be removed using the ‘rm’ command:<br />
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