Data Visualization
Michael Freeman
{who am I?}
What?
Why?
How?
{context for today}
{what is data visualization?}
{what is ethics?}
{what do you want to do with your life?}
Let's try something new...
mfviz.com/info200
{are we on the same page?}
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
What's the data?
What's the visual encoding?
So... what is data visualization?
The visual encoding of data to enhance perception.
{lots of definitions}
{why?}
Illumination
Does the wind blow East to West, or West to East?
Exploration
How long do people live?
Impact
How segregated are U.S. cities?
{how?}
Visualization is a design problem
Identify user/audience
Articulate problem scope
Develop personas
Write scenarios
Encode data to solve problems
Maximize how quickly and accurately people decode information from graphics
Maximize how quickly and accurately people decode information from graphics
(Preattentive cognition)
How many 3's are there?
How many 3's are there?
Orientation
Maximize how quickly and accurately people decode information from graphics
Maximize how quickly and accurately people decode information from graphics
(graphical perception)
Most accurate
Least accurate
This only matters if you
know what is most
important to your user
What to walk away with
Turning data into information
Thanks!
Michael Freeman
mikefree@uw.edu
mfviz.com
@mf_viz
INFO 498 (tech. foundations)
INFO 343 (web dev.)
INFO 472 (visualization)
info200
By Michael Freeman
