Following up on the sparklines implementation, I have a dichotomous sparkline implementation now. These are the same type of simple, “word-size graphics” except they visualize something that is either on or off (with an optional neutral value). For example, my favorite baseball team the Chicago Cubs have started this season 
9-5.
For completeness, here are the standing for the NL Central as of last night:
| Team | Sparkline | Record |
|---|---|---|
| Houston |  |
10-5 |
| Chicago Cubs | |
9-5 |
| Cincinnati |  |
9-6 |
| St. Louis |  |
9-6 |
| Milwaukee |  |
8-7 |
| Pittsburgh |  |
5-12 |
Here is the code and docs.
See previous posts about sparklines and Tufte’s book.
