/dem-download

Download DEM files of the EU

Primary LanguagePythonBSD 3-Clause Clear LicenseBSD-3-Clause-Clear

EU DEM Download

Download DEM files of the EU.

Example:

Input was the rectangular bounding box 10.011636032586688,48.70792025947608,12.223993889052613,50.25793688217101 around the convex hull of all public transit stops of the VGN (pink). As result, nine DEM tiles were downloaded (black and white images) which cover the whole bounding box.

img.png

Usage

To download DEM files covering a rectangular region of Europe (bounding box, consisting of four coordinates), run ./download_dem_zip.py.

usage: download_dem_zip.py [-h] [--target-dir TARGET_DIRECTORY] BOUNDING_BOX

Download DEM tiles covering a bounding box from OpenDemEU with 1 arc second resolution. For details, see "1-arc second
European geographic tiles" at https://www.opendem.info/opendemeu_background.html

positional arguments:
  BOUNDING_BOX          Bounding Box

options:
  -h, --help            show this help message and exit
  --target-dir TARGET_DIRECTORY
                        Target directory where downloaded .zip files are stored

To extract the GeoTIFF (.tif) files and to create one JSON file with credits, run ./extract_tif_and_credits.py.

usage: extract_tif_and_credits.py [-h] [--src-dir SOURCE_DIR] [--dst_dir TARGET_DIR]

Extract .tif files from .zip files of source directory into target directory and create one JSON file with credits of
the open data sources.

options:
  -h, --help            show this help message and exit
  --src-dir SOURCE_DIR  Source directory with .zip files
  --dst_dir TARGET_DIR  Target directory for extracted .tif files and credits.json

Notes

Definitions

Digital Surface Model (DSM), Digital Terrain Model (DTM): https://www.opendem.info/definitions.html

Arc Seconds in Meters

https://www.opendem.info/arc2meters.html

Open DEM EU - High Resolution

https://www.opendem.info/opendemeu_background.html

High-resolution projected tiles: In a 50*50 km raster as GeoTIFFs. The spatial reference system is the ETRS89 Lambert Azimuthal Equal-Area projection coordinate reference system (EPSG:3035) and vertical datum EVRS2000 (EPSG:5730). Resolutions below 1 m were recalculated to a 1 m DTM with a cubic resampling method to create manageable datasets below 10 GB.

Open DEM EU - Medium Resolution

https://www.opendem.info/opendemeu_background.html

1-arc second European geographic tiles: The typical SRTM style 1°*1° degree tiles with 1-arc second resolution as GeoTIFFs. The spatial reference system is geographic, lat/lon with horizontal datum ETRS89, ellipsoid GRS80 (EPSG:4258) and vertical datum EVRS2000 with geoid EGG08 (EPSG:5730).

How to cite the selected Datasets:

  • Produced using Copernicus data and information funded by the European Union - EU-DEM layers.
  • Land NRW (2017) Data licence Germany – attribution – version 2.0 (www.govdata.de/dl-de/by-2-0)
  • Agentschap voor Geografische Informatie Vlaanderen - CC0 1.0 Universal (CC0 1.0)
  • Actueel Hoogtebestand Nederland (AHN) - CC0 1.0 Universal (CC0 1.0)
  • Ministry of the environment and spatial planning, Slovenian environment agency (www.arso.gov.si)
  • Geoland.at (2019) - CC BY 4.0 (CC BY 4.0)
  • GEOPORTALE NAZIONALE - AccessConstraints: Nessuno - None

Have a look at the readme file of every tile for further information.