MARC 21 Format for Authority Data: 034: Coded Cartographic Mathematical Data (Network Development and MARC Standards Office, Library of Congress)

Coded form of the cartographic mathematical data relevant to the entity described in the authority record. The data that is recorded usually derives from authoritative sources.

For digital items, the coordinates can represent a bounding rectangle, the outline of the area covered and/or the outline of an interior area not covered. For celestial charts, it may also contain zone, declination data, and/or right ascension data, and/or equinox.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

Second Indicator - Type of ring

Type of ring for digital cartographic items.

# - Not applicable

Type of ring is not applicable, such as when the cartographic item is not digitally encoded data.

0 - Outer ring

Coordinate information represents the closed non-intersecting boundary of the area covered.

1 - Exclusion ring

Coordinate information represents the closed non-intersecting boundary of an area within the G-polygon outer ring that is excluded.

■ SUBFIELD CODES

$d - Coordinates - westernmost longitude

$e - Coordinates - easternmost longitude

$f - Coordinates - northernmost latitude

$g - Coordinates - southernmost latitude

Subfields $d, $e, $f, and $g always appear together. The abbreviations for the hemispheres are: N = North, S = South, E = East, W = West..

The coordinates may be recorded in the form hdddmmss (hemisphere-degrees-minutes-seconds), however, other forms are also allowed, such as decimal degrees.

The subelements are each right justified and unused positions contain zeros.


034	##$dW097.5000$eW089.0000$fN049.5000$gN043.0000$2[code for Minnesota Geographic Data Clearinghouse]

$j - Declination - northern limit

$k - Declination - southern limit

Subfields $j and $k are each eight characters in length and record the declination in the form hdddmmss (hemisphere-degrees-minutes-seconds). The degree, minute and second elements are each right justified and the unused positions contain zeros. (If declination of center is known, it is repeated in both subfields).


034	##$jN0545600$kN0545600$m134518$n134518$p2000.00$r78$2[code for Cambridge star atlas]

$m - Right ascension - eastern limit

$n - Right ascension - western limit

Subfield $m and $n are each six characters in length and record the right ascension in the form hhmmss (hour-minute-seconds). The hour, minute and second elements are each right justified and the unused positions contain zeros. (If the right ascension of center is known, it is repeated in both subfields).

$p - Equinox

Equinox or epoch for a celestial chart. Usually recorded in the form yyyy (year) according to the Gregorian calendar, but may include a decimal including the month in the form yyyy.mm (year-month).

$r - Distance from earth

Distance of celestial bodies, such as planets or stars, from the Earth in light-years in star atlases.

$s - G-ring latitude

Latitude of a point of the g-ring.

$t - G-ring longitude

Longitude of a point of the g-ring.

$x - Beginning date

Beginning of the date period of the entity in which the coordinates describe. The date is structured in the form of YYYYMMDD. When no date is recorded, it is assumed that the coordinate information is current.

$y - Ending date

Ending of the date period of the entity in which the coordinates describe. The date is structured in the form of YYYYMMDD. When no date is recorded, it is assumed that the coordinate information is current.


034	##$dE0110000$eE0320000$fN0690000$gN0550000$x17210000$y19171200$2[code for Hammond atlas of world history]
034	##$dE0110000$eE0240000$fN0690000$gN0550000$x19171200 $2[code for The statesman's year-book] [Coordinates for Sweden showing period when Finland was part and then separated]

$z - Name of extraterrestrial body

Name of a planet or other extraterrestrial body specified when the coordinate data recorded in subfields $d, $e, $f and $g do not describe an entity on Earth.


034	##$dW113.0000$eW113.0000$fN000.0000$gN000.0000$zMars $2[code for Mars Global Surveyor]

$2 - Source

MARC code that identifies the source of the data recorded in field 034. If different sources are recorded, separate fields should be used. Code from: MARC Code Lists for Relators, Sources, Description Conventions.

$6 - Linkage

See description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number

See description of this subfield in Appendix A: Control Subfields.

034 - Coded Cartographic Mathematical Data (R)

FIELD DEFINITION AND SCOPE

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

■ SUBFIELD CODES

INPUT CONVENTIONS


Subfield Codes
$d - Coordinates - westernmost longitude (NR) $e - Coordinates - easternmost longitude (NR) $f - Coordinates - northernmost latitude (NR) $g - Coordinates - southernmost latitude (NR) $j - Declination - northern limit (NR) $k - Declination - southern limit (NR) $m - Right ascension - eastern limit (NR) $n - Right ascension - western limit (NR) $p - Equinox (NR)	$r - Distance from earth (NR) $s - G-ring latitude (R) $t - G-ring longitude (R) $x - Beginning date (NR) $y - Ending date (NR) $z - Name of extraterrestrial body (NR) $2 - Source (NR) $6 - Linkage (NR) $8 - Field link and sequence number (R)