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Proj  Projection


Bytes

 MAP: 008/22–23; 006/05–06

Input Standards

 MAP: Required if applicable. Two-character code. Default: blank characterblank character

Definition
MAP, 006

If a map specifies a type of projection, enter the two-character code in Proj. If a map does not specify a projection, leave Proj blank.

Codes
blank characterblank character Project not specified. No projection is specified on the item. Use for most globes.

Azimuthal

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. None of the other codes for azimuthal projections is appropriate.

Cylindrical

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. None of the other codes for cylindrical projections is appropriate.

Conic

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. None of the other codes for conic projections is appropriate.

Other projections

da Armadillo
db Butterfly
dc Eckert
dd Goode's homolosine
de Miller's bipolar oblique conformal conic
df Van Der Grinten
dg Dymaxion
dh Cordiform
dl Lambert conformal
zz Other. None of the other codes is appropriate.

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