🌍 EDDA-Coordinata Viewer
Historical texts contain information about latitude and longitude in many, non-standardized forms. Here, you can view the results of research to find and normalize coordinates in an Enlightenment-era text.
This application allows you to explore geographical coordinates manually annotated from articles in the 18th-century Encyclopédie edited by Diderot and d'Alembert. You can search for any term within either the entry's text content or its headword (title). All matching entries will be displayed in the table below, and if they contain coordinates, their locations (points, areas, or paths) will be automatically rendered on the interactive map.
Out of 15,278 total geographical entries, the dataset includes 4,798 entries with manually identified, explicit coordinates.
- Authors: Ludovic Moncla, Pierre Nugues, Thierry Joliveau, and Katherine McDonough.
- Dataset: GEODE/edda-coordinata
- Data sources: ENCCRE & The ARTFL Project.
- Project: GEODE
Cite this work
Moncla, L., Nugues, P., Joliveau, T., & McDonough, K. (2026). EDDA-Coordinata: An Annotated Dataset of Historical Geographic Coordinates. arXiv preprint arXiv:2602.23941. (Accepted at LREC 2026)
Usage notes:
Terms do not need to be place names (toponyms): they can be any word (e.g., château, philosophie, Londres). If you search for a word, you will retrieve all the instances of that word either in the title (headword) or the entry text. The mapped coordinates represent all coordinates present in that article, not necessarily the specific coordinates of your search term. Click on a marker to see the historical meridian used for its calculation!
Search Results (max 50)