Helsingfors terrängskuggning
Description
The Helsinki hillshading image, or shaded relief image, is a raster data that visualises elevation variations in the terrain. The dataset was produced from the 2017 “ground point” laser scanning data. The data includes an interpolated height model, i.e. a shaded relief raster image.
Four different images have been produced. The field resolution of all raster images is 50 cm/pixel. The pixel values of the raster are 8-bit grayscale or 24-bit RGB colour image. In Tiff images, terrain shapes have been programmatically enhanced with three different “sunlight orientations”:
1. 45 degrees, direction of the sun from the northeast.
2. 315 degrees, direction of the sun from the northwest.
3. Image illuminated from six directions, produced in 60-degree increments
4. Image illuminated from six directions, produced in 60-degree increments, colour version
**Previewing the data in the map.hel.fi service:**
- [Multi-directional, colour](https://kartta.hel.fi/link/dDx5PT)
- All hillshading layers can be found on the website: [https://kartta.hel.fi/](https://kartta.hel.fi/?setlanguage=en) > Layers > Hillshadings
**Coordinate systems**
- Maintained in ETRS-GK25 (EPSG:3879), can be projected to other coordinate systems. See GetCapabilities query for other possible coordinate systems.
**API addresses:**
- WMS API: [https://kartta.hel.fi/ws/geoserver/avoindata/wms](https://kartta.hel.fi/ws/geoserver/avoindata/wms?request=getCapabilities)
**WMS layers:**
- Vinovalovarjoste_2017_HS_45_05m
- Vinovalovarjoste_2017_HS_315_05m
- Diagonal light shade_2017_MDHS_05m
- Vinovalovarjoste_2017_MDHS_varipinta_05m
Administrator: City of Helsinki, Urban environment division, Services and permits, City Survey services
Resources
| Name |
Format |
Description |
Link |
|
0 |
|
https://www.avoindata.fi/data/dataset/d29f6a5c-db0f-4d16-9933-5c5e3e7b8c45/resource/512f023e-5291-4d6d-8fb6-70493c8ae7b7 |
Tags
- hillshadings
- laserkeilaus
- vinovalovarjosteet
- terrängskuggning
- rinnevarjosteet