Library of Congress >> MARC >> Bibliographic >> 3XX >> 343

# 343 - Planar Coordinate Data (R)

MARC 21 Bibliographic - Full
February 1999

 First IndicatorUndefined# - Undefined Second IndicatorUndefined# - Undefined

 Subfield Codes \$a - Planar coordinate encoding method (NR) \$b - Planar distance units (NR) \$c - Abscissa resolution (NR) \$d - Ordinate resolution (NR) \$e - Distance resolution (NR) \$f - Bearing resolution (NR) \$g - Bearing units (NR) \$h - Bearing reference direction (NR) \$i - Bearing reference meridian (NR) \$6 - Linkage (NR) \$8 - Field link and sequence number (R)

### FIELD DEFINITION AND SCOPE

Information about the coordinate system developed on a planar surface. The information is provided to allow the user of a geospatial data set to identify the quantities of distances, or distances and angles. These define the position of a point on a reference plane onto which the surface of the Earth has been projected.

### GUIDELINES FOR APPLYING CONTENT DESIGNATORS

#### ■ INDICATORS

• Both indicator positions are undefined; each contains a blank (#).

#### ■ SUBFIELD CODES

\$a - Planar coordinate encoding method
Method used to represent horizontal positions.
\$b - Planar distance units
Unit of measure used for distances.
 343 ##\$bInternational feet.
\$c - Abscissa resolution
Minimum (nominal) distance between the x or column values of two adjacent points, expressed in planar distance units of measure.
 343 ##\$aCoordinate pair;\$bmeters;\$c22;\$d22.
\$d - Ordinate resolution
Minimum (nominal) distance between the y or row values of two adjacent points, expressed in planar distance units of measure.
 343 ##\$acoordinate pair;\$c0.01;\$d0.01;\$bU.S. feet.
\$e - Distance resolution
Minimum distance measurable between two points, expressed in planar distance units of measure.
 343 ##\$aCoordinate pair;\$e30.0;\$f0.0001;\$gDegrees, minutes and decimal seconds;\$hNorth;\$bU.S. feet.
\$f - Bearing resolution
Minimum angle measurable between two points, expressed in bearing units of measure.
 343 ##\$aCoordinate pair;\$c3.224549805355;\$d3.224549805355;\$f0.0001;\$bmeters.
\$g - Bearing units
Units of measure used for angles.
 343 ##\$aCoordinate pair;\$e80.0;\$f0.0001;\$gDegrees, minutes and decimal seconds;\$bmeters.
\$h - Bearing reference direction
Direction from which the bearing is measured.
 343 ##\$aCoordinate pair;\$c0.001024;\$d0.001024;\$hNorth;\$bsurvey feet.
\$i - Bearing reference meridian
Axis from which the bearing is measured.
 343 ##\$iMagnetic.