Exploratory Data Analysis Project 1 README and Code Book

Data File Download, Extraction and Reduction

Source URL:

http://d396qusza40orc.cloudfront.net/exdata%2Fdata%2Fhousehold_power_consumption.zip 

Destination Directory:

G:/R_WorkingDirectory.d/ExploratoryDataAnalysis.d/Project1.d/dat.d/exdata_data_household_power_consumption

Data File Name and Size:

household_power_consumption.txt *133 Mbytes*
20070201.20070202.household_power_consumption.txt *0.365 Mbytes*

This latter file was generated using the cygwin/unix/bash utilities cat and grep.
See below for Scripts.

Download and Extraction Methods:

Downloaded with IE Web Browser,
Unzipped with With Windows Utilities

Data Reduction Method for the Dates 2007-02-01 and 2007-02-02

*Utilized cygwin unix bash utilities:*

cat household_power_consumption.txt | grep Date\; > 20070201.20070202.household_power_consumption.txt

cat household_power_consumption.txt | grep "1/2/2007" | grep -v "21/2" | grep -v "11/2" >> 20070201.20070202.household_power_consumption.txt

cat household_power_consumption.txt | grep "2/2/2007" | grep -v "22/2" | grep -v "12/2" >> 20070201.20070202.household_power_consumption.txt