Microsoft KB Archive/197061

= Map information in programs based on the WGS-84 map datum =

Article ID: 197061

Article Last Modified on 10/30/2007

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APPLIES TO


 * Microsoft Encarta Virtual Globe 98
 * Microsoft Encarta Virtual Globe 99
 * Microsoft Encarta World Atlas 96
 * Microsoft Expedia Streets 98
 * Microsoft Expedia Trip Planner 98
 * Microsoft Expedia Streets & Trips 2000
 * Microsoft MapPoint 2000 Standard Edition
 * Microsoft MapPoint 2001 Standard Edition
 * Microsoft MapPoint 2002 Standard Edition
 * Microsoft Streets & Trips 2008
 * Microsoft Streets & Trips 2008 with Connected Services
 * Microsoft Streets & Trips 2008 with GPS Locator
 * Microsoft Streets & Trips 2002 Standard Edition
 * Microsoft Streets & Trips 2001 Standard Edition

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This article was previously published under Q197061



SUMMARY
The map information in the Microsoft programs listed in the "Applies to" section is based upon WGS84 (World Geodetic System 1984) in Plate Carree, or projections in rendering.

Because of the methods these programs use to display map information, you may notice a discrepancy in the displayed position of a point on the map and the actual latitude and longitude of the point based on the WGS-84 map datum.

Some Global Positioning System (GPS) instruments can be configured to use different map data for their basic map functions. To obtain the best results with Microsoft programs that support GPS input, configure your GPS instrument to use the WGS-84 map datum.

For additional information about using GPS instruments with MicrosoftExpedia Streets and Trips 2000, click the article number below to view the article in the Microsoft Knowledge Base:

233245 Expedia Streets and Trips 2000: Cannot Use GPS Device with Program



MORE INFORMATION
The latitude and longitude of a single point on the Earth's surface can differ considerably depending on the map datum you use.

For example, in the United Kingdom, the position of a point based on a pair of latitude and longitude co-ordinates in the WGS-84 map datum may be as far as 135 meters from a point based on the same co-ordinates in the OSGB-36 map datum.

Note There are more than 240 spatial reference systems known as Coordinate Reference System (CRS) in common useage today. The map datum used by the products listed at the top of the articles is the most common, that is, WGS84.

Additional query words: auto-map amap degrees minutes seconds nad world atlas evg

Keywords: kbinfo kbui KB197061

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