The map you saw in your browser should have looked something like this, which shows the world's maximum temperatures on April 23, 2004: Come back here afterwards to learn how it works.Įditor Note - Spaces inserted into URL to avoid horizontal scrolling For example, follow the link below to retrieve a world map of today's highest temperatures. IntroductionĪn amazing number of free, interesting, and just plain beautiful geographic maps are available on the web, and they can be easily retrieved programmatically using the Web Mapping Service protocol developed by the OpenGIS consortium ( ). Several utility classes for accessing WMS servers and information are provided and described. The tutorial provides C# examples of progressively increasing complexity to illustrate use of the protocol and programmatic access from Windows. This tutorial introduces the Web Mapping Service (WMS) protocol standardized by the OpenGIS Consortium for retrieving geographic maps over the internet.

Download WMS Overview example binaries - 55 Kb.

Download WMS Overview solution with source - 312 Kb.The data served by the GNS is in a geographic coordinate system based on the WGS84 datum and ellipsoid. The data is stored and encoded in Unicode UTF-8, and all search and output functions present and generate the feature names data using the same UTF-8 encoding. The GNS database contains over 8 million features associated with over 13 million names. The GNS has been in service since 1994 and is updated daily. The GNS's feature coordinates are approximate and intended for finding purposes. The GNS can be used for finding places, GIS data, cartography, and GEOINT products. Each record contained within provides information on the feature's location, administrative division, and designation (e.g., populated place, stream, mountain).

In addition to the current approved names of features, users may find variant and historical spellings, along with non-Roman script spellings. The Geographic Names Server (GNS) is the official repository of standard spellings of all foreign geographic names, sanctioned by the United States Board on Geographic Names (BGN).

Bing wms url