STK High Resolution Maps Technical Notes

STK High Resolution Maps are based on the Relational World Databank 2 (RWDB2). RWDB2 is available to the public in ASCII format from the Earth Science Information Office of the U.S. Geological Survey. The RWDB2 database was designed for producing small-scale maps, not for applications requiring high geodetic accuracy, such as navigation.

The terms briefly defined here are taken from the RWDB2 Reference Manual.

Term	Description
Rank	A hierarchical order of importance within features or a way to distinguish subfeatures. Rank 1 rivers are the most important, while rank 5 rivers are minor. A rank 1 international boundary is delimited, while a rank 2 is not less important but is simply indefinite or in dispute. This allows one to symbolize the lines differently or to vary the complexity and density of the map. Note that the ranks of most features are related to WDB2, the names data bank, and other databases. Ranks that appear to be missing may be those that have been eliminated, moved to other features on ranks, or those planned for the future.
Geodetic vs. Geocentric	RWDB2 should be considered to be geocentric because the data is mixed, and, considering the small input scale, one probably could not tell the difference.
Accuracy	Although the potential data storage accuracy for RWDB2 is 10 centimeters, one should consider the data as being accurate to the nearest second at best.