How do I install PyQtGraph?
$ rosrun rqt_plot rqt_plot [DEBUG] rqt_plot.plot: import of PyQtGraphDataPlot failed (trying other backends)
This is on a fresh install of U13.04 and ROS-Hydro. rqt_plot does revert back to MatPlot, but I would like to know how to install the above library, since I assume it's better. ;)