Base Map Service
Global reference base for all those applications that require the consumption of information in WMS/WMTS formats quickly
The ICGC Base Map Service is intended to be used as a global reference base for all those applications that require the consumption of information in WMS/WMTS formats quickly.
The Base Map Service is generated from the products generated by the ICGC in the area of Catalonia (Territorial Topographic Reference, ContextMaps and Territorial Orthophoto) and, therefore, has the same cycle of updates as the products whose feeds, however, unlike the geoservices specific to the different products and due to this general reference map vocation, the Base Map service has worldwide coverage. Outside the territory of Catalonia, the database is completed with information from the OpenMapTiles/OpenStreetMaps projects.
Technical characteristics of the WMS service
Connection URL
https://geoserveis.icgc.cat/servei/catalunya/mapa-base/wms?
- Supported OGC: WMS 1.1.0, 1.1.1, 1.3.0.
- Original EPSG: 3857.
- Supported EPSGs: 3857, 25831, 4258, 4230, 4326.
- Supported GetMaps formats: image/png, image/jpeg.
- Supported OGC methods: GetCapabilities, GetMap.
- URL capabilities: https://geoserveis.icgc.cat/servei/catalunya/mapa-base/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=Getcapabilities.
- URL exemple the "topografic" layer: https://geoserveis.icgc.cat/servei/catalunya/mapa-base/wms?LAYERS=topografic&FORMAT=image%2Fpng
&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&SRS=EPSG%3A3857&BBOX=303302,5175704,313086,5185488&WIDTH=256&HEIGHT=256.
Technical characteristics of the WMTS service
URL RESTful capabilities
https://geoserveis.icgc.cat/servei/catalunya/mapa-base/wmts/1.0.0/WMTSCapabilities.xml
- Supported OGC: WMTS 1.0.0.
- Original EPSG: 3857.
- Supported EPSG: 3857.
- Supported access: RESTful.
- Supported RESTful formats: png.
- Exemple RESTful URL with the "topografic" layer: https://geoserveis.icgc.cat/servei/catalunya/mapa-base/wmts/topografic/MON3857NW/12/2079/1518.png.
Origin of data and licenses of use
- Vector layers: Catalonia ©ICGC. License CC-BY (attribution) / Rest of the world ©OpenMapTiles ©OpenStreetMap contributors. ODbL license (attribution).
- Image layers: Catalonia ©ICGC. License CC-BY (attribution) / Rest of the world Esri, DigitalGlobe, USDA, USGS, GeoEye, Getmapping, AeroGRID, IGN, IGP, UPR-EGP and the GIS community. ©Esri with own license (attribution).
Available layers
| Layer | Layer name | Exemple |
|---|---|---|
| Topographic Base Map Traditional and complete styling of ICGC products on different scales | topografic | Imatge
|
| Gray Topographic Base Map Traditional and complete styling of ICGC products in different scales in gray palette | topografic-gris | Imatge
|
| Standard Base Map Estilització completa adaptada per a entorns webs amb estil continu a totes les escales | estandard | Imatge
|
| Simplified Base Map Lightly styled to facilitate the overlay of information | simplificat | Imatge
|
| Administrative Base Map Administrative limits arriving at the municipal level in Catalonia | administratiu | Imatge
|
| Ortho Base Map Base map of the images with the ortho images in force in Catalonia | orto | Imatge
|
| Ortho Gray Base Map Base map of images with current ortho images of Catalonia in gray palette | orto-gris | Imatge
|
| Ortho Hybrid Base Map Image base map with the orthoimage in force in Catalonia and with the superposition of toponymy and road infrastructure | orto-híbrida | Imatge
|
The Pseudo-Mercator or Spherical Mercator projection was initially used by Google Maps and has now become a de facto standard for displaying maps on the web and display systems as it preserves shapes and angles locally and globally whole is projected as a square, introducing a large distortion in scale and areas, but facilitating successive subdivision into regular tiles of 256x256 pixels each. At zoom level 0, a single tile is generated for the entire world, and each tile is successively subdivided into four to create a 2zoom x 2zoom grid.
Imatge ©Microsoft. AzureMaps
Imatge ©Microsoft. AzureMaps
Sources of information
The source of the data that appears at each zoom level for each layer is listed below. The information is differentiated between the scope of Catalonia and the rest of the world.
| Layer | Area | Origin of the data | Zoom level |
|---|---|---|---|
| topografic topografic-gris | World | OpenMapTiles, OpenStreetMap contributors | 0-20 |
| topografic topografic-gris | Catalonia | Contextmaps ICGC | 7-16 |
| topografic topografic-gris | Catalonia | Referencial Topogràfic Territorial ICGC | 17-18 |
| topografic topografic-gris | Catalonia | Referencial Topografic Local ICGC Referencial Topogràfic Territorial ICGC | 19-20 |
| estandard simplificat administratiu | World | OpenMapTiles, OpenStreetMap contributors | 0-20 |
| estandard simplificat administratiu | Catalonia | Contextmaps ICGC | 7-20 |
| orto orto-gris orto-hibrida | World | Esri, DigitalGlobe, USDA, USGS, GeoEye, Getmapping, AeroGRID, IGN, IGP, UPR-EGP, and the GIS community | 0-20 |
| orto orto-gris orto-hibrida | Catalonia | Ortofoto Territorial ICGC | 0-20 |