About / data licences
Find-a-Line finds possible highlines in elevation data: anchors on steep ground, every pair checked for clearance under the webbing. Its results are suggestions to check on the spot, not safety advice.
Elevation data
- NMT / NMPT (GUGiK, Poland): Source: Główny Urząd Geodezji i Kartografii (GUGiK), geoportal.gov.pl. Licence: geoportal.gov.pl terms (free use, source stated).
- swissALTI3D / swissSURFACE3D (swisstopo): © swisstopo. Licence: swisstopo OGD terms (free use, source stated).
- DMR 5.0 / DMP 1.0 (ÚGKK SR, Slovakia): © ÚGKK SR. Licence: CC BY 4.0.
- Malta LiDAR 2018 (Planning Authority, MSDI): Planning Authority Malta (MSDI), LiDAR 2018. Licence: no conditions on access and use (INSPIRE metadata).
- Malta LiDAR 2012 (Planning Authority, MSDI): Planning Authority Malta (MSDI), LiDAR 2012. Licence: unresolved (CC BY-NC-ND 4.0 or no conditions).
- MDT05 / MDS05 (IGN Spain, PNOA-LiDAR): Obra derivada de MDT05 / MDS05 CC-BY 4.0 ign.es. Licence: CC BY 4.0.
- FABDEM V1-2: FABDEM V1-2 © University of Bristol; FABDEM is produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. Licence: CC BY-NC-SA 4.0. Neal, J., Hawker, L. (2023): FABDEM V1-2. https://doi.org/10.5523/bris.s5hqmjcdj8yo2ibzi9b4ew3sn. Non-commercial use only; results computed from FABDEM are adapted material, shared under the same licence. The organisations in charge of the Copernicus programme by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30.
- Copernicus DEM GLO-30: Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. Licence: Copernicus DEM licence. The organisations in charge of the Copernicus programme by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30.
- NASADEM: NASADEM: NASA JPL (2020), NASA LP DAAC, via OpenTopography. Licence: NASA open data (no restrictions). Data accessed through OpenTopography (opentopography.org).
- Copernicus DEM GLO-30 water body mask: Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. Licence: Copernicus DEM licence. The organisations in charge of the Copernicus programme by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30.
OpenStreetMap
Coastlines, cliffs, named areas and place names: © OpenStreetMap contributors, under the Open Database Licence (ODbL 1.0); searched with Nominatim and the Overpass API, extracts from Geofabrik.
Orthophotos and background maps
- Orthophoto (geoportal.gov.pl): GUGiK
- SWISSIMAGE (swisstopo): © swisstopo
- Orthophoto ZBGIS (ÚGKK SR): © ÚGKK SR
- Orthophoto Malta 2018 (MSDI): Planning Authority Malta
- Orthophoto PNOA (IGN Spain): PNOA © IGN
- OpenStreetMap tiles: © OpenStreetMap contributors
- OpenTopoMap: © OpenTopoMap (CC-BY-SA)
- Esri World Imagery: © Esri and its data providers
Each run names the data it used in its map and in its ATTRIBUTION.txt; results made from FABDEM may be shared only for non-commercial use, under the same licence.
Contact: krzysiek@lukawski.org.