GBM EDITOR
3D White Map Editor — Data Sources & Processing
A reference list of geographic data the 3D white relief map editor fetches and processes. When you publish or distribute outputs, include the applicable credits and processing notes.
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01GBM EDITOR
About this page
The editor combines several open datasets to build elevation meshes, water masks, infrastructure lines, and heritage positions. Only sources actually used in your session appear in the status bar, export dialog, and bundled CREDITS.txt.
02SOURCES
Data source table
"Use in editor" describes each dataset's role; "Processing" summarises how Create GBM transforms it.
| Data | Provider | Use in editor | Processing | Licence / terms |
|---|---|---|---|---|
| Elevation tiles (DEM) | GSI Map Tiles | Terrain mesh height | RGB→elevation decode, resampling, vertical scale | PDL1.0 — attribution & processing note |
| Basemap tiles (standard / pale / red relief / blank) | GSI Map Tiles | Map preview, texture PNG | Tile fetch & composite with user overlays | Content Terms of Use — attribution & processing note |
| Vector tiles experimental_bvmap | GSI (experimental) | Sea-area supplement (waterarea) | waterarea extraction → raster, combined with elevation | Content Terms of Use — experimental data |
| OpenStreetMap | © OpenStreetMap contributors | Water, roads, railways, admin boundaries | Overpass fetch → raster / line geometry | ODbL — © notice, processing note |
| Wikidata | Wikimedia Foundation | Cultural heritage positions (auto fetch) | SPARQL, bounding-box search | CC0 — attribution recommended |
| Nominatim | © OpenStreetMap contributors | Manual place search, EN/zh-TW region names | Name geocoding | ODbL — © notice |
| Reverse geocoder API | GSI | JA region name (credit plate) | Centre coordinate → place name | Per API terms of use |
03PROCESSING
Processing & derivative works
- • Elevation tiles are decoded from RGB values and resampled into mesh height.
- • OpenStreetMap data is fetched via Overpass API and rasterised or extruded into 3D geometry.
- • Sea gaps may be supplemented with the GSI Vector Tile Experiment (waterarea) combined with elevation data.
- • Outputs are derivative works for education and inquiry — not official maps or survey products.
04LINKS