To create our model in DEMto3D we need the elevation data of an area. Many of these data are available online and are free. Depending on which area of the Earth we want to print, we will find diferent resolution data. The higher the data resolution , more details of the terrain can be printed. we can find from LIDAR data with 0.5 meter resolution to data collected by satellites with 100 m resolution.
Earth Explorer
Some of the elevation data that can be found in this web service with global coverage are:
Shuttle Radar Topography Mission (STRM)
- Coordinates : Latitude and Longitude
- Reference system : WGS84/EGM96 (EPGs:4326)
- Vertical units : Meters
- Spatial resolution : 1 arc-sec (~ 30 meters) / 3 arc-sec (~ 90 meters)
- Coverage : 60 degrees North – 54 degrees South
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)
Global Digital Elevation Model (GDEM)
- Coordinates : Latitude and Longitude
- Reference system : WGS84/EGM96 (EPGs:4326)
- Vertical units : Meters
- Spatial resolution : 1 arc-sec (~ 30 meters)
- Coverage : 83 degrees North – 83 degrees South
OpenTopography
Here we find elevation LIDAR data mainly from USA
National Geographic Institute (IGN)
In the download center of IGN are availables digital elevation models of Spain with resolutions from 200 meters to LIDAR data 5 meters.
Hi fernando, test this web service:
http://www.marine-geo.org/tools/maps_grids.php
MDE testing with this service I have had some problems that have been fixed in version 2.2 of DEMto3D.
A greeting
Hi Fernando, both ASC format, and Geotiff, are read by kosmo (for large areas downloading data format ASC, has given me problems and has not been downloaded successfully). The reference system in which data is WGS84 are having the EPSG code: 4326.
Regards.
Hello, tienes acceso a datos de elevaciones de cobertura global desde el proyecto STRM. Aqui tienes la web del proyecto https://www2.jpl.nasa.gov/srtm/.
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