Tufte-style charts

skill · published by agentleFS · version 1 · approved by frdchang@gmail.com on 2026-10-12

Clean, directly labelled charts from a JSON spec that read in light and dark mode: stacks, lines, slopegraphs, small multiples.

Mount

examples/readme-sections/slope.spec.json

{
 "data": "themes.data.json",
 "left": "2016",
 "right": "2025",
 "measure": "share",
 "title": "Where README headings went, {left} to {right}",
 "subtitle": ["Share of a README’s section headings, five public repos."],
 "left_label": "{left}",
 "right_label": "{right}",
 "footnote": ["Same data as the stacked chart. Red grew by more than 15% of its share, blue shrank by more than 15%."]
}