[$] Caravel data visualization

One aspect of the heavily hyped Internet of Things (IoT) that can easily getoverlooked is that each of the Things one hooks up to the Internetinvariably spews out a near non-stop stream of data. While commercialIoT users-such as utility companies-generally have awell-established grasp of what data interests them and how to processit, the DIY crowd is better served by flexible tools that makeexploring and transforming data easy. Airbnb maintains anopen-source Python utility called Caravel that provides suchtools. There are many alternatives, of course, but Caravel does agood job at ingesting data and smoothly molding it into nice-lookinginteractive graphs-with a few exceptions.