The possibility of using the Geoportal API to access data Data Portal map IGN's, is now well known geomaticians (mainly French) who are looking for webservices mapping over France.
But perhaps less well known are other cartographic webservices "French" as those offered by two French companies and Cartosphere Geosignal. The company
CARTOSPHERE , a subsidiary of ESRI France, moved here of cartographic webservices that allow you to view and compare the contents of six funds in raster map: France Raster, CS Raster Navteq, CS Raster Navteq shaded, CS Raster TeleAtlas, CS Raster TeleAtlas with shade BD Ortho IGN.
(Copyright Cartosphere, IGN, Navteq, TeleAtlas)
These webservices maps are accessible by two investment options:
- the annual fee per user that allows a user to access and unlimited for 1 year one or more collections of data and its use in applications using ESRI software,
- the use of credit (based on ArcGIS Server) that allows one or more users to access and use all content available in applications using ESRI software and within the package credits. The site
webservices Cartosphere based on an application built with ArcGIS Server.
coverage of comics Ortho IGN's based on aerial coverage of IGN, we find that the air cover of the IGN is the same as that used in Google Maps, and BingMaps Geoportail . Thus, by observing the Millau Viaduct I recently spoke here, we can see that the air cover of the IGN dates from the time of construction of the first two piers of the viaduct is the end of 2002.
(Copyright Cartosphere, IGN, Navteq, TeleAtlas)
Other map backgrounds, they are more or less accurate and updated according to the scales, which makes them largely take the comparison with other sites online digital mapping.
(Copyright Cartosphere, IGN, Navteq, TeleAtlas)
the zoom level can have Morethan DETAILED Urban not only the design of buildings (houses, buildings, etc..), The indication major public facilities, names of neighborhoods but also the numbering Postal Street near each cross street.
(Copyright Cartosphere, IGN, Navteq, TeleAtlas)
By zooming gradually over the Millau Viaduct and the A75 motorway that takes, we can observe some "quirks map", a bit disconcerting to motorists:
(Copyright Cartosphere, IGN, Navteq, TeleAtlas)
Nevertheless, we must underscore the fluidity and speed to view this map webservices and the quality of the interface that presents a set of tools for ease of use .
(Copyright Cartosphere)
For its part, proposes Geosignal here webservices map which can be found here description. This site map is based on webservices MapServer, an open source tool for building web mapping sites.
(Copyright Geosignal)
The funds come from cartographic mapping surveys carried out by the company itself for years in the business of cartographic editor. September
map scales are available which can be accessed sequentially by the tool-zoom slider located above the map area or zone to enter a chosen value of the zoom scale. A mini-map of general location can relocate to any time zone is displayed in geographical context. Framing is also available by department.
(Copyright Geosignal)
One of the major interests of cartographic Geosignal webservices is that themes can be displayed as desired. They mainly concern the area of administrative boundaries and roads. Nevertheless, some of them marked with * are only visible from across the 1 / 500 000:
- Municipal (*)
- Administrative centers of communes (*)
- Townships
- District (*)
- Departments
- Regions
- Urban Road (from the 200k and 50k)
- Highways
-
main axes - Axes
secondary - Secondary Network (*)
- County roads (*)
- Highways
- Assault private
- Other lanes (*)
-
divided highways - Highways
- Secondary Roads
-
Streets - Streets pedestrian
- Braces
- Paths
-
Bridges - Tunnels
For Developers mapping sites, access to these cartographic Geosignal webservices from a client software that can read RSS WMS (ArcGIS 9.1 SP2, JUMP, GAIA, Mapinfo 8, uDig ...), takes a very simple URL: http://www.geosignal.org/cgi-bin/wmsmap? and can rely on a help document very well done.
Moreover it is possible to access the service metadata Geosignal. Finally, the use of these web services is totally free which is an advantage.
To return to the Millau Viaduct and the A75 motorway that takes, here's how this major motorway appears in the webservice mapping Geosignal:
(Copyright Geosignal)
It is reassuring to see Highway crossing from one side of the Tarn Valley on the map as is the case in reality for over two years.
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