Valhalla Isochrone | Nicolas Lambert | Observable

Valhalla Isochrone | Nicolas Lambert | Observable

Nicolas Lambert

Nov 10

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Author

Nicolas Lambert

Front-end cartographer. Research Engineer in Geographic Information Science at CNRS & UAR RIATE. Author of Mad Maps (2019), Practical Handbook of Thematic Cartography (2016, 2020, 2025) and Cartographia (2025).

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Valhalla Isochrone | Nicolas Lambert | Observable