Projections

PyGMT support many map projections. Use the projection parameter to specify which one you want to use in all plotting modules. The projection is specified by a one letter code along with (sometimes optional) reference longitude and latitude and the width of the map (for example, Alon0/lat0[/horizon]/width). The map height is determined based on the region and projection.

These are all the available projections:

Azimuthal Projections

Azimuthal Equidistant

General Perspective

General Stereographic

Gnomonic

Lambert Azimuthal Equal Area

Orthographic

Conic Projections

Albers Conic Equal Area

Equidistant conic

Lambert Conic Conformal Projection

Polyconic Projection

Cylindric Projections

Cassini Cylindrical

Cylindrical equal-area

Cylindrical equidistant

Mercator

Miller cylindrical

Cylindrical Stereographic

Transverse Mercator

Universal Transverse Mercator

Miscellaneous Projections

Eckert IV

Eckert VI

Hammer

Mollweide

Robinson

Sinusoidal

Van der Grinten

Winkel Tripel

Non-geographic Projections

Cartesian linear

Cartesian logarithmic

Cartesian power

Polar

Projection Table

The below table shows the projection codes for the 31 GMT projections.

PyGMT Projection Argument	Projection Name
Alon0/lat0[/horizon]/width	Lambert azimuthal equal area
Blon0/lat0/lat1/lat2/width	Albers conic equal area
Clon0/lat0/width	Cassini cylindrical
Cyl_stere/[lon0[/lat0/]]width	Cylindrical stereographic
Dlon0/lat0/lat1/lat2/width	Equidistant conic
Elon0/lat0[/horizon]/width	Azimuthal equidistant
Flon0/lat0[/horizon]/width	Azimuthal gnomonic
Glon0/lat0[/horizon]/width	Azimuthal orthographic
Glon0/lat0/alt/azim/tilt/twist/W/H/width	General perspective
H[lon0/]width	Hammer equal area
I[lon0/]width	Sinusoidal equal area
J[lon0/]width	Miller cylindrical
Kf[lon0/]width	Eckert IV equal area
Ks[lon0/]width	Eckert VI equal area
Llon0/lat0/lat1/lat2/width	Lambert conic conformal
M[lon0[/lat0]/]width	Mercator cylindrical
N[lon0/]width	Robinson
Oalon0/lat0/azim/width[+v]	Oblique Mercator, 1: origin and azim
Oblon0/lat0/lon1/lat1/width[+v]	Oblique Mercator, 2: two points
Oclon0/lat0/lonp/latp/width[+v]	Oblique Mercator, 3: origin and pole
Pwidth[+a][+f[e|p|radius]][+roffset][+torigin][+z[p|radius]]	Polar [azimuthal] (\(\theta, r\)) (or cylindrical)
Poly[lon0[/lat0]/]width	Polyconic
Q[lon0[/lat0/]]width	Equidistant cylindrical
R[lon0/]width	Winkel Tripel
Slon0/lat0[/horizon]/width	General stereographic
T[lon0[/lat0]/]width	Transverse Mercator
Uzone/width	Universal Transverse Mercator (UTM)
V[lon0/]width	Van der Grinten
W[lon0/]width	Mollweide
Xwidth[l|pexp|T|t][/height[l|pexp|T|t]][d]	Linear, log\(_{10}\), \(x^a-y^b\), and time
Ylon0/lat0/width	Cylindrical equal area