Elevation Model (DEM GeoTIFF)
Open BetaA digital elevation model as a single file: one-band Float32 GeoTIFF where the cell value IS the elevation in METRES above sea level — not a colour, not a shadow. The raster is clipped exactly to the area you ordered, georeferenced, written in the coordinate system you chose, and places without data (sea, a gap in coverage) are honestly marked with the NoData value. Heights come from the global Copernicus DEM GLO-30. Resolution is 30 m with a vertical accuracy of about 2–4 m: this is pre-design, tourism, visualisation and 3D — not engineering design and not a land survey. Opens in QGIS, ArcGIS, Global Mapper, Blender (as displacement), GDAL and any GIS package.
Keskeiset ominaisuudet
Tietoa Elevation Model-muodosta
A DEM GeoTIFF is an elevation model as a single file: an ordinary GeoTIFF with one Float32 band whose cell value IS the elevation in metres above sea level. Not a colour, not a shadow, not the brightness of a picture — a number you can read, subtract and average. The raster is georeferenced, clipped exactly to the area you ordered and written in the coordinate system you chose, so it lands in its place in a GIS without manual georeferencing.
The heights come from the global Copernicus DEM GLO-30 model: about a 30 m step with a vertical accuracy of roughly 2–4 m. That is enough for pre-design assessment, tourism, visualisation and 3D — and not enough for engineering design, grading or any work held to building codes, where an instrumental survey is required. Take this format when you need the elevation numbers themselves rather than a ready picture of the terrain: hillshade and hypsometric tint are separate formats, and they are built from a raster like this one.
Cells with no elevation — open sea, a gap in coverage — carry the NoData value declared inside the file rather than zero, so a GIS shows them as empty instead of sea level. The share of such cells is stated as a number in the order warning, and if the whole area has no elevation at all, no file is produced. The Copernicus credit, a license requirement, is embedded in the file metadata and travels with it.
Mikä ohjelma avaa Elevation Model-tiedostot
Seuraavat ohjelmat ja sovellukset voivat avata ja muokata OSM2CDR:stä vietyjä Elevation Model (DEM GeoTIFF) (.tif) -tiedostoja sekä työskennellä niiden parissa:
Format specifications
- Open standard
- 3D coordinates supported
- Lossless (no quality loss)
- No attributes
- Output: 1 file
- One single-band Float32 GeoTIFF whose cell value is elevation in metres, clipped exactly to the ordered area, NoData declared in the file; heights from Copernicus DEM GLO-30 (~30 m cell, vertical accuracy ~2-4 m).
Ketkä käyttävät Elevation Model-karttoja
Näin viet kartan muotoon Elevation Model
Kuinka avata viennin jälkeen
- GDAL — gdalinfo -stats dem.tif reports the grid size, extent, coordinate system, elevation range and the declared NoData value: the first check that the file really holds your area.
- QGIS (free) — drag the .tif into the window as a raster, then Raster → Analysis → Hillshade or Contour if you want to see the terrain rather than read its numbers.
- gdaldem — gdaldem slope dem.tif slope.tif computes slopes and gdaldem hillshade produces shaded relief: both pictures are built from this same file.
- Blender — feed the raster as a height map into a Displace modifier: values in metres set the scene's relief scale directly.
Suositut Elevation Model-kartat
Hanki Elevation Model (DEM GeoTIFF) -karttavientejä
Lataa ammattilaistason Elevation Model-karttoja OpenStreetMapista. Luodaan välittömästi mistä tahansa alueesta.