rdpeng/ExData_Plotting1 — pull request #171 by vmcfarland (2014-12-07 19:52:28+00:00)
Title: Plot1

![plot1](https://cloud.githubusercontent.com/assets/9203769/5332328/a64a44dc-7e20-11e4-8a8e-e35d94e9a91c.png)