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Effective Input/Output Methods for Data Manipulation: A Comprehensive Guide

Explore various techniques for setting working directories, reading scripts and text files, and writing data files efficiently. Learn how to manage input and output operations seamlessly in your projects.

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Effective Input/Output Methods for Data Manipulation: A Comprehensive Guide

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  1. http://www.sciencedaily.com/releases/2008/09/080902143245.htmhttp://www.sciencedaily.com/releases/2008/09/080902143245.htm Topic #4 – input/output‏ • 1. Input • Set working directory • Read a script • Read a text file • 2. Output • Write a text file

  2. http://www.sciencedaily.com/releases/2008/09/080902143245.htmhttp://www.sciencedaily.com/releases/2008/09/080902143245.htm Topic #4 – input/output‏ • 1. Input • Set working directory • Method #1 • file > change dir... • Method #2 • file.path should look like ... setwd(file.path) “C://...//”

  3. http://www.sciencedaily.com/releases/2008/09/080902143245.htmhttp://www.sciencedaily.com/releases/2008/09/080902143245.htm Topic #4 – input/output‏ • 1. Input • Set working directory • Method #1 • [ file > change dir... ]

  4. http://www.sciencedaily.com/releases/2008/09/080902143245.htmhttp://www.sciencedaily.com/releases/2008/09/080902143245.htm Topic #4 – input/output‏ • 1. Input • Read a script • file.path should be specified similar to setwd( )‏ source(file.path)

  5. http://www.sciencedaily.com/releases/2008/09/080902143245.htmhttp://www.sciencedaily.com/releases/2008/09/080902143245.htm Topic #4 – input/output‏ • 1. Input • Read a text file • Options • Header – can save column names at top of file • Separator – can change the character that separates values DATA = read.table(file = file.path , ...)

  6. http://www.sciencedaily.com/releases/2008/09/080902143245.htmhttp://www.sciencedaily.com/releases/2008/09/080902143245.htm Topic #4 – input/output‏ • 2. Output • Write a text file write.table(Data, file = file.path , ...)

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