Friday, November 28, 2014

Tesla Motors: 70% wants "D"

Demand for Tesla Motors, Inc.'s Dual-Motor Vehicles Is "Off the Charts" -

"Demand for the P85D is off the charts," Musk said. "We're seeing a very high proportion of orders for all-wheel drive, either P85D or 85D (which has smaller, equal-sized electric motors front and rear), so 70%-plus of our cars will be dual-motor.""

How reliable are hard drives?

Who makes the most reliable hard drives? | ExtremeTech:

"...Backblaze, an all-you-can-eat online backup company... currently has around 28,000 hard drives powered up and constantly spinning, storing a total of around 80,000 terabytes (80 petabytes) of user data... As of the end of December 2013, Backblaze had 12,765 Seagate drives, 12,956 Hitachi drives, and 2,838 Western Digital drives."

Hard drive failure rate, plotted by monthHard drive annual failure rate, broken down by maker (Hitachi, Seagate, Western Digital) and size

d3.js: Animation & Interaction

Learning D3 Part 3: Animation & Interaction | Synthesis | Scott Becker:

D3 and UI animations – Design Research

animations and transitions | Jerome Cukier

Data Visualization and D3.js - Udacity

D3.js Tips and Tricks: Update d3.js Data Dynamically (Automatically)

Arrays · mbostock/d3 Wiki:
"Nesting allows elements in an array to be grouped into a hierarchical tree structure; think of it like the GROUP BY operator in SQL, except you can have multiple levels of grouping, and the resulting output is a tree rather than a flat table. The levels in the tree are specified by key functions."

Data Visualization and D3.js - Nest function @ Udacity

D3 nest examples @

Maps Visualization, GeoJSON, TopoJSON

mapschool: a free introduction to geo:

Ogre - ogr2ogr web client
Ogre is a web client (service) that translates spatial files into GeoJSON using the ogr2ogr command line tool for use in JavaScript web applications and frameworks.

Interactive Visualization

Gapminder: Unveiling the beauty of statistics for a fact based world view.:

The Jobless Rate for People Like You - Interactive Graphic -

Data Visualization and D3.js @ Udacity

Life Expectancy v. Per Capita GDP, 2007