rdpeng/ExData_Plotting1 — pull request #93 by suediwanfeng (2014-08-09 22:39:32+00:00)
Title: plot1.png

![plot1](https://cloud.githubusercontent.com/assets/8400023/3867874/fa3c3da2-2015-11e4-8eaa-89bc5ed2b850.png)