Exploratory-Data-Analysis

This is meant for a course project to demonstrate how to construct plots that can be used for exploratory data analysis.

Contents

• README.md
• plot1.R - constructs a histogram showing the frequency of the variable Global Active Power in kilowatt.
• plot1.png - plot 1 saved to PNG file.
• plot2.R - constructs a line graph showing the variable Global Active Power in kilowatt and Date.
• plot2.png - plot 2 saved to PNG file.
• plot3.R - constructs a multivariate line graph showing the Sub_metering variables and Date.
• plot3.png - plot 3 saved to PNG file.
• plot4.R - constructs a panel with the graphs listed above plus a line graph showing Voltage and Date.
• plot4.png - plot 4 saved to PNG file.

Getting Started

1. Visit the UC Irvine Machine Learning Repository Individual household electric power consumption data set to have a general understanding of the project and variables.
2. Download and place the data in a ./data subdirectory.
3. Run the scripts (plot1.R, plot2.R, plot3.R, plot4.R) to generate the graphs.