Value Added | daily

Class Schedule

Basics | sessions 01-03
  1. 19 Jan intro and clients | lecture | labs
  2. 26 Jan servers and command line | lecture | labs
  3. 02 Feb networks and protocols | lecture | labs
Web Development | sessions 04-08

  1. 09 Feb structural layer | lecture | labs
  2. 16 Feb presentational layer | lecture | labs
  3. 23 Feb using a structure | lecture | labs
  4. 02 Mar behavioral layer | lecture | labs
  5. 09 Mar design thoughts | lecture | labs
Dealing with Markup | sessions 09-10
  1. 16 Mar control objects and display | lecture | labs
  2. 23 Mar tools that read markup | lecture | labs
Working with data | sessions 11-14
  1. 30 Mar formulas, functions, vectors | lecture | labs
  2. 06 Apr data display | lecture | labs
  3. 13 Apr manipulate data sets | lecture | labs
  4. 20 Apr relational data bases | lecture | labs
Presentations | sessions 15-16
  1. 27 Apr designing a presentation | lecture | labs
  2. 04 May delivering a presentation | lecture | labs

Click on the image below for the lecture slides
slides for session 12

The history of data visualization is goes way back.
There are a few names to know and things to think about.

Thinking about the reasons and theory of data visualization

Quoting Edward Tufte in the Introduction of The Visual Display of Quantitative Information

Data graphics visually display measured quantities by means of the combined use of points, lines, a coordinate system, numbers, symbols, words, shading, and color ... Modern data graphics can do much more than simply substitute for small statistical tables. At their best, graphics are instruments for reasoning about quantitative information. Often the most effective way to describe, explore and summarize a set of numbers - even a very large set - is to look at pictures of those numbers. Furthermore, of all methods for analyzing and communicating statistical information, well-designed graphics are usually the simplest and at the same time the most powerful.

With that in mind, let's together consider how one can display data in chart form

Visualization of data has a long history, but the addition of more powerful computing and newer programs has given us the opportunity to display data in ways that are enlightening.

The tool, however can be misused, either by intent or by ignorance

How to Lie with Statistics and The Best and Worst of Statistical Graphics by Michael Friendly at York University, Canada

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Some additional thoughts on data display

Data can be displayed in good and bad ways

Scholars at York University in Canada have put together a useful gallery of good methods of display and also of ideas to avoid

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Does it matter?

Lessons for data analysts from the Challenger disaster tells us good data display could be a life or death issue.

But there are always several different ways to view the same situation and not everyone agrees with Tufte.

Dilbert cartoon from 07 March 2009

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