Attribution and thanks
GPXZ is built on the shoulders of open data and software.
Data
The GPXZ dataset processes and merges open data.
The following datasets are currently used in GPXZ:
- 10m Iceland DEM - CC-BY-4.0: Landmælinga Íslands
- 2022 UK LIDAR Composite - Open Government Licence v3.0: © Environment Agency copyright and/or database right 2015.
- 5m DEM Australia - CC-BY-4.0: Geoscience Australia
- 1m Estonian DTM - Elevation data: Estonian Land Board 2025
- 5m Estonian DTM - Elevation data: Estonian Land Board 2021
- 5m Spain DTM - CC-BY-4.0: Centro Nacional de Información Geográfica
- Bayern (Germany) 1m DTM - CC-BY-4.0: Bayerische Vermessungsverwaltung
- Belgium 20m DTM - CC-BY-4.0: National Geographic Institute
- Brussles DTM - CC-BY-4.0: National Geographic Institute
- Copernicus DEM GLO-30 - Produced using products © DLR e.V. (2014-2018) and © Airbus Defence and Space GmbH (2021) provided under COPERNICUS by the European Union and ESA, all rights reserved
- Denmark 1.6m DTM - Frie geografiske data: Dataforsyningen
- Digital Elevation Model (DEM) Austria 10m - CC-BY-4.0: Land Kärnten, data.gv.at
- EMOD 2024 Bathymetry - CC-BY-4.0: EMODnet
- ETOPO1 Global Relief Model - NOAA National Geophysical Data Center. 2009: ETOPO1 1 Arc-Minute Global Relief Model. NOAA National Centers for Environmental Information. Accessed 2021.
- Finland Elevation model 2m - CC-BY-4.0: National Land Survey of Finland, 2017
- France RGE ALTI 1m V2.0 - Licence ouverte Etalab 2.0: IGN
- Flanders DTM - Agentschap Digitaal Vlaanderen
- GEBCO 2024 Bathymetry - Public domain: GEBCO
- Baden-Württemberg 1m DTM (Germany) - dl-de/by-2-0: LGL, www.lgl-bw.de
- Bayern 1m DTM (Germany) - CC-BY-4.0: Bayerische Vermessungsverwaltung
- Berlin 1m DTM (Germany) - dl-de/by-2-0: Geoportal Berlin
- Brandenburg 1m DTM (Germany) - dl-de/by-2-0: LGB
- Hamburg 1m DTM (Germany) - dl-de/by-2-0: LGV Hamburg
- Hessen 1m DTM (Germany) - Open Data Hessen
- Mecklenburg-Vorpommern 1m DTM (Germany) - CC-BY-4.0: LAiV
- Niedersachsen 1m DTM (Germany) - CC-BY-4.0: GeoBasis-DE/LGLN 2025, Data changed
- North Rhine-Westphalia 1m DTM (Germany) - dl-de/by-2-0: Geobasis NRW
- Rheinland-Pfalz 1m DTM (Germany) - dl-de/by-2-0: LVermGeoRP2025
- Sachsen 1m DTM (Germany) - dl-de/by-2-0: Geobasisinformation Sachsen
- Sachsen-Anhalt 1m DTM (Germany) - dl-de/by-2-0: LVermGeo Sachsen-Anhalt
- Schleswig-Holstein 1m DTM (Germany) - CC-BY-4.0: LVG SH
- Thüringen 1m DTM (Germany) - dl-de/by-2-0: GDI-Th
- Hong Kong 50cm DTM 2020 - Hong Kong Geodata Store Terms: Hong Kong Geodata Store
- Korkeusmalli 10 m 2018 - CC-BY-4.0: Maanmittauslaitos
- LINZ 1m Lidar - CC-BY-4.0: LINZ
- Mexico 5m DEM - Fuente: INEGI, Aguascalientes 2019
- National LIDAR Programme - Open Government Licence v3.0: © Environment Agency copyright and/or database right 2015
- Netherlands 50cm AHN4 DTM - CC0
- Norway 10m DEM - CC-BY-4.0: Kartverket
- OSNI (Northern Ireland) 10m DTM - Open Government Licence: Land & Property Services
- OSNI 10m DTM - Open Government Licence: Land & Property Services
- Scotland 2m LIDAR Composite DTM - OGLv2.0: Environment Agency
- Scotland 50cm LIDAR Composite DTM - OGLv2.0: Environment Agency
- SRTM V3 30m - NASA
- swissALTI3D 2m - © swisstopo
- The GEBCO_2021 Grid - GEBCO Compilation Group (2021): GEBCO 2021 Grid (doi:10.5285/c6612cbe-50b3-0cffe053-6c86abc09f8f).
- US 3DEP 1/3 arc-second and 1m - USGS 3D Elevation Program Digital Elevation Model
- Wales 1m and 2m LiDAR Composite DTM - OGLv2.0: Natural Resources Wales
Software
GPXZ uses a web software stack of nginx, uwsgi, django, flask, postgres, and redis.
We're particularly grateful for and reliant on the following geospatial tools, which abstract away a huge amount of complexity: