INTRODUCTION TO R Commands

INTRODUCTION TO R Commands - INTRODUCTION TO R Commands The...

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INTRODUCTION TO R Commands The best way to learn R is to use it. In today’s lab you’ll use R using a list of commands given below. By examining the output, you can figure out for yourself what the commands are doing and thus learn something about R. Directions: 1. Start R using the Windows start menu: start all programs R R 2.3.1 (or whatever version is currently installed on your machine). 2. Type in each command shown below in the commands window and examine the results. For example, type x =2 Hit return, then type: x 3. Some hints: o After typing a few lines of code, try using your up arrow key to see that it will go up to a previous line so that you can re-execute code from a previous line. This is especially useful if you make a typographical error and need to fix it. o If you hit return and get a “+” prompt instead of a “>” prompt, that means continue the line. The most common error is to forget a parenthesis “)” or a quotation mark.
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