Content standards for digital geospatial metadata -- FGDC

Syntax:

Identification_Information =

Citation + Description + Time_Period_of_Content + Status + Spatial_Domain + Keywords + Access_Constraints + Use_Constraints + (Point_of_Contact) + (1{Browse_Graphic}n) + (Data_Set_Credit) + (Security_Information) + (Native_Data_Set_Environment) + (1{Cross_Reference}n)

Citation =

Citation_Information

Description =

Abstract + Purpose + (Supplemental_Information)

Time_Period_of_Content =

Time_Period_Information + Currentness_Reference

Status =

Progress + Maintenance_and_Update_Frequency

Spatial_Domain =

Bounding_Coordinates + (1{Data_Set_G-Polygon}n)

Bounding_Coordinates =

West_Bounding_Coordinate + East_Bounding_Coordinate + North_Bounding_Coordinate + South_Bounding_Coordinate

Data_Set_G-Polygon =

Data_Set_G-Polygon_Outer_G-Ring + 0{Data_Set_G-Polygon_Exclusion_G-Ring}n

Data_Set_G-Polygon_Outer_G-Ring =

4{G-Ring_Latitude + G-Ring_Longitude}n

Data_Set_G-Polygon_Exclusion_G-Ring =

4{G-Ring_Latitude + G-Ring_Longitude}n

Keywords =

Theme + (Place) + (Stratum) + (Temporal)

Theme =

1{Theme_Keyword_Thesaurus + 1{Theme_Keyword}n }n

Place =

1{Place_Keyword_Thesaurus + 1{Place_Keyword}n }n

Stratum =

1{Stratum_Keyword_Thesaurus + 1{Stratum_Keyword}n }n

Temporal =

1{Temporal_Keyword_Thesaurus + 1{Temporal_Keyword}n }n

Point_of_Contact =

Contact_Information

Browse_Graphic =

Browse_Graphic_File_Name + Browse_Graphic_File_Description + Browse_Graphic_File_Type

Security_Information =

Security_Classification_System + Security_Classification + Security_Handling_Description

Cross_Reference =

Citation_Information

Semantics:

Citation -- 1.1

information to be used to reference the data set. Compound.

Citation_Information -- (8)

Description -- 1.2

a characterization of the data set, including its intended use and limitations. Compound.

Abstract -- 1.2.1

a brief narrative summary of the data set.

Type: text

Domain: free text

Purpose -- 1.2.2

a summary of the intentions with which the data set was developed.

Type: text

Domain: free text

Supplemental Information -- 1.2.3

other descriptive information about the data set.

Type: text

Domain: free text

Time Period of Content -- 1.3

time period(s) for which the data set corresponds to the ground. Compound.

Time_Period_Information -- (9)

Currentness Reference -- 1.3.1

the basis on which the time period of content information is determined.

Type: text

Domain: "ground condition" "publication date" free text

Status -- 1.4

the state of and maintenance information for the data set. Compound.

Progress -- 1.4.1

the state of the data set.

Type: text

Domain: "Complete" "In work" "Planned"

Maintenance and Update Frequency -- 1.4.2

the frequency with which changes and additions are made to the data set after the initial data set is completed.

Type: text

Domain:

"Continually"

"Daily"

"Weekly"

"Monthly"

"Annually"

"Unknown"

"As needed"

"Irregular"

"None planned"

free text

Spatial Domain -- 1.5

the geographic areal domain of the data set. Compound.

Bounding Coordinates -- 1.5.1

the limits of coverage of a data set expressed by latitude and longitude values in the order western-most, eastern-most, northern-most, and southern-most. For data sets that include a complete band of latitude around the earth, the West Bounding Coordinate shall be assigned the value -180.0, and the East Bounding Coordinate shall be assigned the value 180.0 Compound.

West Bounding Coordinate -- 1.5.1.1

western-most coordinate of the limit of coverage expressed in longitude.

Type: real

Domain: -180.0 <= West Bounding Coordinate < 180.0

East Bounding Coordinate -- 1.5.1.2

eastern-most coordinate of the limit of coverage expressed in longitude.

Type: real

Domain: -180.0 <= East Bounding Coordinate <= 180.0

North Bounding Coordinate -- 1.5.1.3

northern-most coordinate of the limit of coverage expressed in latitude.

Type: real

Domain: -90.0 <= North Bounding Coordinate <= 90.0; North Bounding Coordinate >= South Bounding Coordinate

South Bounding Coordinate -- 1.5.1.4

southern-most coordinate of the limit of coverage expressed in latitude.

Type: real

Domain: -90.0 <= South Bounding Coordinate <= 90.0; South Bounding Coordinate <= North Bounding Coordinate

Data Set G-Polygon -- 1.5.2

coordinates defining the outline of an area covered by a data set. Compound.

Data Set G-Polygon Outer G-Ring -- 1.5.2.1

the closed nonintersecting boundary of an interior area. Compound.

G-Ring Latitude -- 1.5.2.1.1

the latitude of a point of the G-ring.

Type: real

Domain: -90.0 <= G-Ring Latitude <= 90.0

G-Ring Longitude -- 1.5.2.1.2

the longitude of a point of the G-ring.

Type: real

Domain: -180.0 <= G-Ring Latitude < 180.0

Data Set G-Polygon Exclusion G-Ring -- 1.5.2.2

the closed nonintersecting boundary of a void area (or "hole") in an interior area. Compound.

G-Ring Latitude -- (1.5.2.1.1)

G-Ring Longitude -- (1.5.2.1.2)

Keywords -- 1.6

words or phrases summarizing an aspect of the data set. Compound.

Theme -- 1.6.1

subjects covered by the data set (for a list of some commonly-used thesauri, see Part IV: Subject/index term sources in Network Development and MARC Standards Office, 1988, USMARC code list for relators, sources, and description conventions: Washington, Library of Congress). Compound.

Theme Keyword Thesaurus -- 1.6.1.1

reference to a formally registered thesaurus or a similar authoritative source of theme keywords.

Type: text

Domain: "None" free text

Theme Keyword -- 1.6.1.2

common-use word or phrase used to describe the subject of the data set.

Type: text

Domain: free text

Place -- 1.6.2

geographic locations characterized by the data set. Compound.

Place Keyword Thesaurus -- 1.6.2.1

reference to a formally registered thesaurus or a similar authoritative source of place keywords.

Type: text

Domain: "None" "Geographic Names Information System" free text

Place Keyword -- 1.6.2.2

the geographic name of a location covered by a data set.

Type: text

Domain: free text

Stratum -- 1.6.3

layered, vertical locations characterized by the data set. Compound.

Stratum Keyword Thesaurus -- 1.6.3.1

reference to a formally registered thesaurus or a similar authoritative source of stratum keywords.

Type: text

Domain: "None" free text

Stratum Keyword -- 1.6.3.2

the name of a vertical location used to describe the locations covered by a data set.

Type: text

Domain: free text

Temporal -- 1.6.4

time period(s) characterized by the data set. Compound.

Temporal Keyword Thesaurus -- 1.6.4.1

reference to a formally registered thesaurus or a similar authoritative source of temporal keywords.

Type: text

Domain: "None" free text

Temporal Keyword -- 1.6.4.2

the name of a time period covered by a data set.

Type: text

Domain: free text

Access Constraints -- 1.7

restrictions and legal prerequisites for accessing the data set. These include any access constraints applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations on obtaining the data set.

Type: text

Domain: "None" free text

Use Constraints -- 1.8

restrictions and legal prerequisites for using the data set after access is granted. These include any access constraints applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations on obtaining the data set.

Type: text

Domain: "None" free text

Point of Contact -- 1.9

contact information for an individual or organization that is knowledgeable about the data set. Compound.

Contact_Information -- (10)

Browse Graphic -- 1.10

a graphic that provides an illustration of the data set. The graphic should include a legend for interpreting the graphic. Compound.

Browse Graphic File Name -- 1.10.1

name of a related graphic file that provides an illustration of the data set.

Type: text

Domain: free text

Browse Graphic File Description -- 1.10.2

a text description of the illustration.

Type: text

Domain: free text

Browse Graphic File Type -- 1.10.3

graphic file type of a related graphic file.

Type: text

Domain: domain values in the table below; free text

"CGM"

Computer Graphics Metafile

"EPS"

Encapsulated Postscript format

"GIF"

Graphic Interchange Format

"JPEG"

Joint Photographic Experts Group format

"PBM"

Portable Bit Map format

"PS"

Postscript format

"TIFF"

Tagged Image File Format

"XWD"

X-Windows Dump

Data Set Credit -- 1.11

recognition of those who contributed to the data set.

Type: text

Domain: free text

Security Information -- 1.12

handling restrictions imposed on the data set because of national security, privacy, or other concerns. Compound.

Security Classification System -- 1.12.1

name of the classification system.

Type: text

Domain: free text

Security Classification -- 1.12.2

name of the handling restrictions on the data set.

Type: text

Domain: "Top secret" "Secret" "Confidential" "Restricted" "Unclassified" "Sensitive" free text

Security Handling Description -- 1.12.3

additional information about the restrictions on handling the data set.

Type: text

Domain: free text

Native Data Set Environment -- 1.13

a description of the data set in the producer's processing environment, including items such as the name of the software (including version), the computer operating system, file name (including host-, path-, and filenames), and the data set size.

Type: text

Domain: free text

Cross Reference -- 1.14

information about other, related data sets that are likely to be of interest. Compound.

Citation_Information -- (8)