Support Files : Coordinate Reference Systems : Map Definition File : Valid CARIS projections:
 

Valid CARIS projections:

Projection

EPSG Projection Definition

Code

Alaska Zone 11

A1 OBLIQUE MERCATOR VARIANTA ("EPSG", "9812")

A1

Ablers Equal Area

ALBERS EQUAL AREA ("EPSG", "9822")

AE

Azimuthal

AZIMUTHAL EQUIDISTANT ("EPSG", "9832")

AZ

Cassini

CASSINI SOLDNER ("EPSG", "9806")

CA

Gauss-Krueger

TRANSVERSE MERCATOR ("EPSG", "9807")

GK

Gnomonic

OBLIQUE AND_EQUATORIAL STEREOGRAPHIC ("EPSG", "9809")

GN

Google Mercator

PSEUDO MERCATOR ("EPSG", "1024")

GM

Hotine Oblique Merc A

OBLIQUE MERCATOR VARIANTA ("EPSG", "9812")

HB

Hotine Oblique Merc B

OBLIQUE_MERCATOR_VARIANTB("EPSG", "9815")

OM

Lambert Conformal Conic

LAMBERT CONIC CONFORMAL_2SP ("EPSG", "9802")

LC

Mercator (CARIS convention)

MERCATOR VARIANTC ("EPSG", "1044")

ME2

Mercator

MERCATOR VARIANTB ("EPSG", "9805")

MR3

Polyconic

AMERICAN POLYCONIC ( "EPSG", "9818")

PO

Polar Stereographic

POLAR STEREOGRAPHIC VARIANTA ("EPSG", "9810")

PS

Rectified Skew Orthomorphic

No EPSG reference

RS

Stereographic

OBLIQUE AND EQUATORIAL STEREOGRAPHIC ("EPSG", "9809")

ST

Transverse Mercator

TRANSVERSE MERCATOR ("EPSG", "9807")

TM

Universal Transverse Mercator

TRANSVERSE MERCATOR ("EPSG", "9807")

UM

1 A1 is a special projection with all hard-coded values


2 ME represents Mercator (Variant C) where the latitude of false origin is the first standard parallel. The false northing is applied to the scaling latitude to calculate where (0, 0) is in the projected space.


3 MR represents Mercator (Variant B). The false northing is applied to the latitude of natural origin, which is always the Equator, to calculate where (0, 0) is in the projected space.


Note that three projections in epsg.db have no corresponding two-character codes and thus are not included in mapdef.dat:

• CYLINDRICAL EQUIDISTANT ("EPSG", "1028")

• LAMBERT CONIC CONFORMAL 1SP ("EPSG", "9801")

• LAMBERT AZIMUTHAL EQUAL AREA ("EPSG", "9820")

Projection

Alaska Zone 11

Alaska Conformal

Albers Equal Area

Azimuthal

Cassini

Equid. Conic A

Equid. Conic B

Equirectangular

Gauss-Krueger

Gnomonic

Hammer

Hotin Oblique Merc B

Interrupted Goode

Interrupt Mollweide

Lambert Azimuthal

Lambert Conformal Conic

Miller Cylindrical

Mercator

Mollweide

Orthographic

Polyconic

Polar Stereographic

Robinson

Rectified Skew Orthomorphic

State Plane

Stereographic

Sinusoidal

Transverse Mercator

Universal Transverse Mercator

Van der Grinten

Wagner IV

Wagner VII

1 A1 is a special projection with all hard-coded values


When creating a new entry, the numeric fields you have to consider depend upon the coordinate system and projection.

Fields

Projections

CA

GK

GN

HB

LC

ME

PO

PS

RS

ST

TM

UM

Scaling lat 1

NEMR

CHMR

 

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

 

CHMR

Scaling lat 2

 

 

 

 

NEMR

CHMR

NEMR

 

 

 

 

 

 

False northing

NEMR

 

NEMR

NEMR

NEMR

NEMR

 

NEMR

NEMR

NEMR

NEMR

 

False easting

NEMR

 

NEMR

NEMR

NEMR

NEMR

 

NEMR

NEMR

NEMR

NEMR

 

Scaling factor

NEMR

CHMR

 

NEMR

NEMR

NEMR

CHMR

 

 

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

NEMR

CHMR

 

Latitude origin

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

LLDG

Central meridian/longitude origin

NEMR

LLDG

CHMR

 

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

NEMR

LLDG

CHMR

 

LLDG

CHMR

Skew azimuth

 

 

 

 

 

CHMR

 

 

 

NEMR

CHMR

 

 

 

Fields that contain a marker may require a value, depending on the definition. If it turns out that a particular field is not required, it should contain a 0 in the map definition entry.

NEMR

In a NEMR coordinate system, the coordinates are expressed as Northings and Eastings of a projection in metres on the ground. Distances and bearings can be carried across adjacent map sheets with this coordinate system.

This table shows which fields you may require for a map definition using a NEMR coordinate system. Any field with no marker is not required and should contain a 0.

Field

Projection

A1

AZ

CA

GK

GN

HB

LC

ME

P0

PS

RS

ST

TM

UM

Scaling latitude 1

●1

●

●

●

●

●

●

●

●

●

●

Scaling latitude 2

●

●

False northing

●

●

●

●

●

●

●

●

●

●

False easting

●

●

●

●

●

●

●

●

●

●

Scaling factor

●

●

●

●

●

●

●

●

●

Latitude origin

●1

Central meridian/longitude origin

●

●

●

●

●

●

●

●

●

●

●

Skew azimuth

●

●

1 For the A1 projection, you must include the same value in both scaling latitude 1 and latitude origin.


LLDG

In an LLDG coordinate system, coordinates are expressed in latitude and longitude in decimal degrees on a reference ellipsoid.

This table shows which fields you may require for a map definition using an LLDG coordinate system.

Field

Projection

A1

AZ

CA

GK

GN

HB

LC

ME

P0

PS

RS

ST

TM

UM

Scaling latitude 1

Scaling latitude 2

False northing

False easting

Scaling factor

Latitude origin

●

●

●

●

●

●

●

●

●

●

●

●

Central meridian/longitude origin

●

●

●

●

●

●

●

●

●

●

●

●

Skew azimuth

CHMR

In a CHMR coordinate system, Coordinates are expressed in metres at the chart scale. All distances and bearings are relative to that chart.

This table shows which fields you may require for a map definition using a CHMR coordinate system.

Field

Projection

AZ

CA

GK

GN

HB

LC

ME

P0

PS

RS

ST

TM

UM

Scaling lat 1

●

●

●

●

●

●

●

●

●

●

●

●

Scaling lat 2

●

False northing

False easting

Scaling factor

●

●

●

●

●

●

●

Latitude origin

Central meridian/longitude origin

●

●

●

●

●

●

●

●

●

●

●

●

Skew azimuth

●

●

Samples

Sample entries from the map definition file:

[UTM - NAD83]

UTM-24N-Nad83,"Zone 24N (42 W TO 36 W)",NEMR,NA83,UM,0,0,0,500000,0.9996,0,-39,0

UTM-25N-Nad83,"Zone 25N (36 W TO 30 W)",NEMR,NA83,UM,0,0,0,500000,0.9996,0,-33,0

UTM-26N-Nad83,"Zone 26N (30 W TO 24 W)",NEMR,NA83,UM,0,0,0,500000,0.9996,0,-27,0

UTM-27N-Nad83,"Zone 27N (24 W TO 18 W)",NEMR,NA83,UM,0,0,0,500000,0.9996,0,-21,0