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Data Visualization
Wenting Zhao
About Me
• Software Engineer
• M.S. in Computer Engineering
• LinkedIn: /wentingzhao
• Email: wenting@ZhaoWenting.com
• Frisbee ✔ Running ✔ Snorkeling ✔ Go (game)
Data Visualization
• WHAT
• WHY
• HOW
• MORE
WHAT
Data visualization is a high bandwidth
connection between data on a computer
system and a human brain, facilitated by
visual communication.
- Source: Data Visualization course provided by UIUC
Source: San Francisco Bike Parking Lots
WHY
WHY
HOW
D3.js
• Geographic Bounding Boxes
• Force-Directed Graph
D3.js
https://github.com/omic/D3Playground
Others
• InfoVis: President Obama Budget TreeMap
• Hicharts: AAPL Stock Price
Perspectives > Obtain Data
• The server generates
the JavaScript for
rendering in the HTML
• AJAX
• Use Web Sockets to
have the server directly
inject data into client
DOM or JavaScript
objects (SignalR)
Perspectives > Data Analysis
• Model Thinking vs. Big Data
Resources
• d3js.org
• Data Visualization with D3.js (lynda.com)
• https://www.coursera.org/course/datavisualization
(UIUC)
• Model Thinking

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Data visualization in JavaScript