City Data Explorer — Weimar
A browser-based digital twin of Weimar (Thuringia, Germany), built entirely from open geodata.
Layers can be inspected on interactive 2D/3D maps and exported for a selected area as GeoJSON
or Rhino 3DM for further analysis in Rhino / Grasshopper.
Open it: https://bauhaus-infau.github.io/weimar-city-data-explorer/
Maps
- Urban Morphology — buildings, parcels, mobility, districts
- Simplified Model for Analysis — precise geometry for Rhino / Grasshopper, incl. the
Space Syntax road networks and counting gates
- Detailled Buildings (LOD2) — buildings with roofs (WEGA LoD2)
- Natural Elements — water, geology, terrain, protected areas
Each map has a layer list on the left (eye icon toggles visibility), a 2D/3D switch and
tools on the right: export (area selection → GeoJSON zip or 3DM), scale grid, PNG/PDF image
export, legend.
Run locally
The page must be served over HTTP (not opened as file://):
python -m http.server 8000
then open http://localhost:8000/.
Repository layout
index.html, app.js, detailed.js, style.css the web application (no build step)
layers/layers.json layer manifest: sources, layers, sidebar, palettes
layers/base_border*.json standard export areas
layers/data/ prepared vector data (GeoJSON, LoD2 binary)
terrain/weimar-dgm/ terrain tiles (Terrarium PNG) built from DGM1
materials/ counting sheets for the Space Syntax survey
tools/ Python scripts that downloaded and prepared the data
tools/ documents how the data in layers/data/ and terrain/ was produced. The scripts
expect the original working folders (data/raw, data/processed), which are not part of this
repository, so they are a reference rather than a one-click rebuild.
Data sources and licences
The attribution for each individual layer is stored in layers/layers.json and shown in the
application.
