| index: |
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
| GDT |
Geographic Data Technologies - A company that produces/sells digital roads data sets with address ranges. |
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| Geodatabase |
An ArcInfo 8 data storage format. A geodatabase represents geographic features and attributes as objects and is hosted inside a relational database management system. |
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| GeoTIFF |
A special expanded version of the TIFF6 standard used for various purposes, especially for DRGs, that provides for embedding topographic information. Embedded geo-referencing removes the need for a companion world file, though one may be provided for compatibility. |
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| GIS |
Geographic Information System – Computer software and hardware designed to allow users to collect, manage, and analyze spatially referenced data. |
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| GNIS |
Geographic Names Information System- USGS digital point data that maps and names about two million physical and cultural features in the U.S. |
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| GPS |
Global Positioning System - A network of radio wave-emitting satellites. Ground-based GPS receivers use the satellites to derive accurate surface coordinates. |
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