http://hbr.org/special-collections/insight/visualizing-data
http://blogs.hbr.org/cs/2013/04/tell_better_data_stories_with.html
Tell Better Data Stories with Motion and Interactivity
When it comes to making sense of vast amounts of complicated
data, time really is on your side. It's a simple concept, one that everyone
understands: an action starts, then eventually stops. The distance between
those two points conveys information — information about then, about now, and
about the differences between the two.
If you apply that simple yet elegant measuring stick to an
overwhelming glut of information, you have the beginnings of a powerful data
visualization that can simplify the complex, identify trends, and shape your
audience's comprehension of the story you want to tell.
However, when time is the canvas for your data, you'll need
one, or both, of these techniques: motion and interactivity.
Hans Rosling, who gained popular fame in his 2006 TED Talk
on "stats that reshape your worldview" uses the power of motion in
the software that runs his Gapminder trend-finding operation.
When Data Visualization Works — And When It Doesn't
I am uncomfortable with the growing emphasis on big data and
its stylist, visualization. Don't get me wrong — I love info graphic
representations of large data sets. The value of representing information
concisely and effectively dates back to Florence Nightingale, when she
developed a new type of pie chart to clearly show that more soldiers were dying
from preventable illnesses than from their wounds. On the other hand, I see
beautiful exercises in special effects that show off statistical and technical
skills, but do not clearly serve an informing purpose. That's what makes me
squirm.
Ultimately, data visualization is about communicating an
idea that will drive action. Understanding the criteria for information to
provide valuable insights and the reasoning behind constructing data
visualizations will help you do that with efficiency and impact.
For information to provide valuable insights, it must be
interpretable, relevant, and novel. With so much unstructured data today, it is
critical that the data being analyzed generate interpretable information.
Collecting lots of data without the associated metadata — such as what is it,
where was it collected, when, how and by whom — reduces the opportunity to play
with, interpret, and gain insights from the data. It must also be relevant to
the persons who are looking to gain insights, and to the purpose for which the
information is being examined. Finally, it must be original, or shed new light
on an area. If the information fails any one of these criteria, then no
visualization can make it valuable. That means that only a tiny slice of the
data we can bring to life visually will actually be worth the effort.