Catalogued
Luoshu and Hetu diagrams
- Made by
- Anonymous; named and paired by Song scholars
- Year
- 1st century CE - 12th century
- Field
- Before the modern era, and beyond the West
- Kind
- Concept diagram
- Room
- Values across a surface — Placed by reading its description, not yet studiedCould also hang in: Charts that compute
19 other forms share this skeleton
Source
Friendly and Denis, Milestones in the history of data visualization
Attribution less certain: contested, or no single inventor recorded