links for 2008-06-17

• Ask E.T.: Sparklines: theory and practice
  Sparklines: theory and practice — Edward Tufte, May 27, 2004

  .
  – Edward Tufte, May 27, 2004

  (tags: visualization)
• Sparkline PHP Graphing Library
  PHP implementation that uses the GD backend.
  (tags: sparkline PHP)
• http://sparkline.wikispaces.com/Examples
  sparklines found in WWW
  (tags: sparkline PHP tools)