Testing out drupal's Sparkline module. Seems like the current version does not work with non-integer data.

 
Some resources:

• Original post by E. Tufte
• http://sparkline.org/
• http://sparkline.wikispaces.com/
• LATEX implementation
• implementation ideas

 
PHP Sparkline test:

• cat(discoveries, sep=",")
• paste(round(runif(min=0, max=100, n=100)), collapse=',')

 
All very interesting. It would be great to implment this for soil profile data, however, and use a vertical graph instead. A horizontal profile is a little difficult to understand: percent clay.

 
Implementation would be simple, with a call the GD helper function imagerotate(). Note that the LATEX package would need a different fix.

Sparkline LATEX Test