Data Product Assignment

##Introduction

The following presentation goes through the assignment of Developing Data Product Course. For your knowledge, the data of PM2.5 used is from:

https://d396qusza40orc.cloudfront.net/exdata%2Fdata%2FNEI_data.zip

After download and unzip, you will get the target file "summarySCC_PM25.rds"

Project Detail

The application has been built to generate the point plot of PM2.5 Emissions based on different years(1999 ~ 2008) and differnet pollutant types(Point, No-point, On-road, Non-road).

User Interface

The application could accept the following two inputs from the users:

1. Years - one could pick the values in the checkbox to decide the years to show

2. Types - one could also pick the pollutant types in the checkbox

3. sample size - one could pick the sample size to show

Project link

For the application

For the ui.R and server.R