Geo Tokyo Meetup 2026 April

geo-tokyo-2026-04.md

Geo Tokyo 2026 April

Talks and Demos

• https://earth.nullschool.net
• https://www.sewayou.com/
• TokyoTerrain.com wait-list
• https://earthquakesjapan.com/
• https://www.mapscroll.ai/

Links

Worldwide

Overture Maps Foundation

A "recent" mapping data foundation called Overture Foundation that is based out of the Linux Foundation. Heavily based on OSM map data plus other map data donation from other companies.

• https://overturemaps.org/

Shade Map

A cool shadow simulation map that uses terrain data to calculate shadows

• https://shademap.app/@36.36043,139.63739,8.28821z,1760255422397t,0b,0p,0m

NeoCarto - Tools for Visualizing Geo Data in JS

Tools for visualizing geo data using JS and Observable.

• https://neocarto.github.io/observable-notebooks2.0/

CartoSVG

Encapsulating a map inside SVG, which allows for using SVG CSS styling and other things for manipulating maps.

• https://cartosvg.com/

ThreeJS for rendering maps.

https://threejs.org/examples/?q=map#webgl_loader_3dtiles

mrdoob/three.js#33292

https://x.com/mrdoob/status/2038834001381818668

Japan specific

Kumoy

A web based QGIS replacement built in Japan.

• https://www.kumoy.io/

• Example: https://app.kumoy.io/public/map/1e61c4c9-6b74-4c05-b537-7359848af5a3#9.83/35.1568/136.8864

EmoRoute

Another 3D train visualization in Tokyo.

• https://www.emoroute.com/

Tokyo Metro Digital Twin Web

Tokyo Metro Government visualization of open 3d mapping data for Tokyo. It includes links to open data that the rendering is based on.

• https://3dview.tokyo-digitaltwin.metro.tokyo.lg.jp/

Geospatial.jp

A dataset for forestry maps, using Geospatial, a custom map tile format called Mesh Map Tile (メッシュマップタイル)

• https://front.geospatial.jp/

• https://www.geospatial.jp/ckan/dataset/mesh_tile

• https://x.com/i/status/2027617257405465015

@machi_measure

@machi_measure is an account that posts about town data, especially using business names to figure out what the shape of a "machi" actually is.

• https://x.com/i/status/2034940909012554038

Project LINKS

Project Links seems to be a government project for open mapping data. There are a few open source projects that are associated with this project:

• https://www.mlit.go.jp/links/

• https://github.com/Project-LINKS-mlitoss/LINKS-Veda

• https://github.com/Project-LINKS-mlitoss/LINKS-SOMA

Locanea

Area analysis data vis.

• https://locanea.com/

• https://locanea.com/analysis/report/3ff86e22-f524-4a49-a281-f0b2d01cbea3

Others

• https://x.com/GMoushimasu/status/2036233172074307718 - zenrin, 3d objects on maps.

Creative

All the buildings that are a triangle

Want to find all the triangle buildings in Japan using OSM data?

https://triangle-buildings.web.app/ (osm, jp)

Illustrated maps

Custom illustrated maps of Japan (and other places)

• https://www.a-gent.tokyo/maps-aj/#itemId=603f35e2cd9a482d4c697ba1

Paper Trail Maps

Beautiful looking old Japanese paper maps that are sold.

• https://www.presentandcorrect.com/blogs/blog/paper-trails