Character position definition and scope:

A two-character alphabetic code that indicates the projection used in producing the item.

Specifically named projections are not described in this document.  The presence of the name of the projection identifies the appropriate code for 008/22-23.  Cartographic reference sources may be consulted for a more detailed explanation of specific projections.

Two fill characters ( || ) are used when no attempt has been made to code these character positions.

Record requirements for National-level and Minimal-level records:  Optional.

Guidelines for applying content designators:

Code:

Description:

##

Projection not specified  No projection is specified on the item.  This code is used for most globes.

aa

Aitoff

ab

Gnomic

ac

Lambert's azimuthal equal area

ad

Orthographic

ae

Azimuthal equidistant

af

Stereographic

ag

General vertical near-sided

am

Modified stereographic for Alaska

an

Chamberlin trimetric

ap

Polar stereographic

au

Azimuthal, specific type unknown  Only the projection type (azimuthal) is known, not the specific projection.

az

Azimuthal, other  An azimuthal projection for which none of the other defined codes are appropriate.

ba

Gall

bb

Goode's homolographic

bc

Lambert's cylindrical equal area

bd

Mercator

be

Miller

bf

Mollweide

bg

Sinusoidal

bh

Transverse Mercator

bi

Gauss-Kruger

bj

Equirectangular

bk

Krovak

bl

Cassini-Soldner

bo

Oblique Mercator

br

Robinson

bs

Space oblique Mercator

bu

Cylindrical, specific type unknown  Only the projection type (cylindrical) is known, not the specific projection.

bz

Cylindrical, other  A cylindrical projection for which none of the other defined codes are appropriate.

ca

Alber's equal area

cb

Bonne

cc

Lambert's conformal conic

ce

Equidistant conic

cp

Polyconic

cu

Conic, specific type unknown  Only the projection type (conic) is known, not the specific projection.

cz

Conic, other  A conic projection for which none of the other defined codes are appropriate.

da

Armadillo

db

Butterfly

dc

Eckert

dd

Goode's homolosine

de

Miller's bipolar oblique conformal conic

df

Van Der Grinten

dg

Dimaxion

dh

Cordiform

dl

Lambert conformal

zz

Other  A projection for which none of the other defined codes are appropriate.

||

No attempt to code

Content designator history:

bkKrovak  [new, 2009]

blCassini-Soldner  [new, 2009]

See also:

006 and 008:  Maps

006 and 008:  Cross Reference Tables by Type of Material

006/01-17:  Character Positions by Type of Material

006  Fixed-Length Data Elements - Additional Material Characteristics

008/00-39:  Character Positions by Type of Material

008  Fixed-Length Data Elements