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Table 5. Format and content for Library Attribute Table (LAT). |
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|  MIL-D-89009
TABLE 5. Format and content for Library Attribute Table (LAT).
{Header length};\
Library Attribute Table;-;\
ID=I,
1,N,Row Identifier,-,-,:\
LIBRARY_NAME=T, 8,P,Library name,-,-,:\
XMIN=F,
1,N,Westernmost longitude,-,-,:\
YMIN=F,
1,N,Southernmost latitude,-,-,:\
XMAX=F,
1,N,Easternmost longitude,-,-,:\
YMAX=F,
1,N,Northernmost latitude,-,-,:;
1
NOAMER
-180.0
5.0
-5.0
90.0
2
EURNASIA
-50.0
35.0
-165.0
90.0
3
SOAMAFR
-180.0
-90.0
180.0
50.0
4
SASAUS
25.0
-55.0
-130.0
55.0
5
BROWSE
-180.0
-90.0
180.0
90.0
a. DCW library header table (LHT). This table (TABLE 6)
identifies the data set, data sources, and security
information in the DCW libraries.
b. Geographic reference table (GRT). This table (TABLE 7)
contains the geographic parameters and projection
information about the DCW libraries.
c. Coverage attribute table (CAT). This coverage attribute
table (TABLE 8) contains four columns: the row
identifier, coverage name, coverage description, and
topology level. The coverage description column is the
equivalent of the thematic layer name.
d. Data quality table (DQT). This table (TABLE 9) contains
information on the source data characteristics including
actual map/chart sheets used in the production process,
compilation date, and general accuracy information.
This table also has a separate variable-length index
file with the following suffix: DQT.
e. Lineage narrative table (LNT). This table contains data
lineage information common to all DCW coverages,
including project history information of digitizing and
transformation tolerance used in the production process.
This table uses a standard documentation format which is
described in Section Appendix section 40.3.
16
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