Attribution and thanks
GPXZ is built on the shoulders of open data and software.
Data
The GPXZ dataset uses 100% open data: we don't do perform any measurement ourselves.
The following datasets are currently used in GPXZ:
- 10m Iceland DEM - CC-BY-4.0: Landmælinga Íslands
- 2020 EMODnet DTM - EMODnet Bathymetry Consortium (2020): EMODnet Digital Bathymetry (DTM).
- 5m DEM Australia - CC-BY-4.0: Geoscience Australia
- 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
- 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
- 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
- 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
- North Rhine-Westphalia (Germany) 1m DTM - Data licence Germany - Zero - Version 2.0: Geobasis NRW
- 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: