Proj4(3pm)

📦

version 2.085 · 3 versions

2.085 · ubuntu noble (latest)
2.074 · ubuntu jammy
2.081 · debian bookworm

✨ Proj4(3pm) ✨

okay bestie, welcome to Proj4(3pm) — straight outta the User Contributed Perl Documentation section, section 3pm, and she is long so buckle up 🫶

💖 NAME 💖

PDL::Transform::Proj4 — it's the PDL::Transform interface to the Proj4 projection library, no cap 🗺️✨

🎀 SYNOPSIS 🎀

# Using the generalized proj interface:
# Make an orthographic map of Earth
use PDL::Transform::Cartography;
use PDL::Transform::Proj4;
$x = earth_coast();
$x = graticule(10,2)->glue(1,$x);
$t = t_proj( proj_params => "+proj=ortho +ellps=WGS84 +lon_0=-90 +lat_0=40" );
$w = pgwin(xs);
$w->lines($t->apply($x)->clean_lines());

# Using the aliased functions:
# Make an orthographic map of Earth
use PDL::Transform::Cartography;
use PDL::Transform::Proj4;
$x = earth_coast();
$x = graticule(10,2)->glue(1,$x);
$t = t_proj_ortho( ellps => 'WGS84', lon_0 => -90, lat_0 => 40 )
$w = pgwin(xs);
$w->lines($t->apply($x)->clean_lines());

🦋 DESCRIPTION 🦋

So the tea is: this thing works exactly like PDL::Transform::Cartography, except it's running the proj library in the background doing the heavy lifting 💪

Please go read the proj library docs at http://www.remotesensing.org/proj for more info on proj itself and how to use the library — that's where the real lore lives 📚

🧚 GENERALIZED INTERFACE 🧚

The main character here is the PDL::Transform::Proj4 object, and she's aliased to the t_proj() function 💅

This object accepts all of the standard options described below, but honestly its whole purpose in life is to be called with just the proj_params option defined, periodt.

When you use the options, they must have a + before them when you place them in the proj_params string — but that + is not required otherwise. Peep the SYNOPSIS above for the vibe check 👀

🌈 ALIASED INTERFACE 🌈

Other than t_proj(), all of the other transforms listed below were autogenerated, and they may not work properly 😭 The main problem is figuring out which parameters a projection actually requires from the proj library itself.

And because that's so tricky to do, there may be times when the proj docs specify a parameter for a projection that just won't work using the anon-hash type specification 🫠 When that happens, bestie, just throw that parameter into the proj_params string and everything should work fine ✨

👑 PARAMETERS AVAILABLE IN ALL PROJECTIONS 👑

🌱 General Parameters 🌱

proj_params — this is a string holding the proj "plus style" parameters. Basically the same energy as what you'd type on the command line for the 'proj' tool, like "+proj=ortho +ellps=WGS84 +lon_0=-90 +lat_0=40". Heads up: this parameter overrides the others below whenever it contains parameters that are also specified explicitly 🔥
proj — the proj projection code to use (like ortho...)
x_0 — Cartesian X offset for the output of the transformation
y_0 — Cartesian Y offset for the output of the transformation
lat_0 — Central latitude for the projection. NOTE: this may mean other things depending on which projection you selected — go read the proj docs bestie!!
lon_0 — Central longitude for the projection. NOTE: same deal, this may mean other things depending on the projection selected — read the proj docs!
units — Cartesian units used for the output of the projection. NOTE: like most of the options here, this is likely useless in the current implementation of this library 💀
init — specify a file:unit for proj to use for its runtime defaults. See the proj docs.
no_defs — Don't load any defaults. See the proj docs.
over — normally, the transformation limits the output to between -180 and 180 degrees (or the cartesian equivalent), but with this option that behavior is turned off 🙈
geoc — Input values are geocentric coordinates.

🌍 Earth Figure Parameters 🌍

ellps — Ellipsoid datum to use. Ex: WGS72, WGS74. See the proj docs and command line tool for the list of possibilities ('proj -le').
R — Radius of the Earth.
R_A — Radius of a sphere with equivalent surface area of specified ellipse.
R_V — Radius of a sphere with equivalent volume of specified ellipse.
R_a — Arithmetic mean of the major and minor axis, Ra = (a + b)/2.
R_g — Geometric mean of the major and minor axis, Rg = (ab)1/2.
R_h — Harmonic mean of the major and minor axis, Rh = 2ab/(a + b).
R_lat_a=phi — Arithmetic mean of the principle radii at latitude phi.
R_lat_g=phi — Geometric mean of the principle radii at latitude phi.
b — Semiminor axis or polar radius
f — Flattening
rf — Reciprocal flattening, +rf=1/f
e — Eccentricity +e=e
es — Eccentricity squared +es=e2

⭐ FUNCTIONS ⭐

💫 t_proj 💫

This is the main entry point for the generalized interface. See above for how to use her 👆

💫 t_proj_adams_hemi 💫

Autogenerated transformation function for Proj4 projection code adams_hemi.

The full name for this projection is Adams Hemisphere in a Square.

💫 t_proj_adams_ws1 💫

Autogenerated transformation function for Proj4 projection code adams_ws1.

The full name for this projection is Adams World in a Square I.

💫 t_proj_adams_ws2 💫

Autogenerated transformation function for Proj4 projection code adams_ws2.

The full name for this projection is Adams World in a Square II.

💫 t_proj_aea 💫

Autogenerated transformation function for Proj4 projection code aea.

The full name for this projection is Albers Equal Area.

🎯 Projection Parameters

lat_1
lat_2

💫 t_proj_aeqd 💫

Autogenerated transformation function for Proj4 projection code aeqd.

The full name for this projection is Azimuthal Equidistant.

🎯 Projection Parameters

guam
lat_0

💫 t_proj_affine 💫

Autogenerated transformation function for Proj4 projection code affine.

The full name for this projection is Affine transformation.

💫 t_proj_airy 💫

Autogenerated transformation function for Proj4 projection code airy.

The full name for this projection is Airy.

🎯 Projection Parameters

lat_b
no_cut

💫 t_proj_aitoff 💫

Autogenerated transformation function for Proj4 projection code aitoff.

The full name for this projection is Aitoff.

💫 t_proj_alsk 💫

Autogenerated transformation function for Proj4 projection code alsk.

The full name for this projection is Modified Stereographic of Alaska.

💫 t_proj_apian 💫

Autogenerated transformation function for Proj4 projection code apian.

The full name for this projection is Apian Globular I.

💫 t_proj_august 💫

Autogenerated transformation function for Proj4 projection code august.

The full name for this projection is August Epicycloidal.

💫 t_proj_axisswap 💫

Autogenerated transformation function for Proj4 projection code axisswap.

The full name for this projection is Axis ordering.

💫 t_proj_bacon 💫

Autogenerated transformation function for Proj4 projection code bacon.

The full name for this projection is Bacon Globular.

💫 t_proj_bertin1953 💫

Autogenerated transformation function for Proj4 projection code bertin1953.

The full name for this projection is Bertin 1953.

💫 t_proj_bipc 💫

Autogenerated transformation function for Proj4 projection code bipc.

The full name for this projection is Bipolar conic of western hemisphere.

💫 t_proj_boggs 💫

Autogenerated transformation function for Proj4 projection code boggs.

The full name for this projection is Boggs Eumorphic.

💫 t_proj_bonne 💫

Autogenerated transformation function for Proj4 projection code bonne.

The full name for this projection is Bonne (Werner lat_1=90).

🎯 Projection Parameters

lat_1

💫 t_proj_calcofi 💫

Autogenerated transformation function for Proj4 projection code calcofi.

The full name for this projection is Cal Coop Ocean Fish Invest Lines/Stations.

💫 t_proj_cart 💫

Autogenerated transformation function for Proj4 projection code cart.

The full name for this projection is Geodetic/cartesian conversions.

💫 t_proj_cass 💫

Autogenerated transformation function for Proj4 projection code cass.

The full name for this projection is Cassini.

💫 t_proj_cc 💫

Autogenerated transformation function for Proj4 projection code cc.

The full name for this projection is Central Cylindrical.

💫 t_proj_ccon 💫

Autogenerated transformation function for Proj4 projection code ccon.

The full name for this projection is Central Conic.

🎯 Projection Parameters

lat_1

💫 t_proj_cea 💫

Autogenerated transformation function for Proj4 projection code cea.

The full name for this projection is Equal Area Cylindrical.

🎯 Projection Parameters

lat_ts

💫 t_proj_chamb 💫

Autogenerated transformation function for Proj4 projection code chamb.

The full name for this projection is Chamberlin Trimetric.

🎯 Projection Parameters

lat_1
lat_2
lat_3
lon_1
lon_2
lon_3

💫 t_proj_col_urban 💫

Autogenerated transformation function for Proj4 projection code col_urban.

The full name for this projection is Colombia Urban.

🎯 Projection Parameters

h_0

💫 t_proj_collg 💫

Autogenerated transformation function for Proj4 projection code collg.

The full name for this projection is Collignon.

💫 t_proj_comill 💫

Autogenerated transformation function for Proj4 projection code comill.

The full name for this projection is Compact Miller.

💫 t_proj_crast 💫

Autogenerated transformation function for Proj4 projection code crast.

The full name for this projection is Craster Parabolic (Putnins P4).

💫 t_proj_defmodel 💫

Autogenerated transformation function for Proj4 projection code defmodel.

The full name for this projection is Deformation model.

💫 t_proj_deformation 💫

Autogenerated transformation function for Proj4 projection code deformation.

The full name for this projection is Kinematic grid shift.

💫 t_proj_denoy 💫

Autogenerated transformation function for Proj4 projection code denoy.

The full name for this projection is Denoyer Semi-Elliptical.

💫 t_proj_eck1 💫

Autogenerated transformation function for Proj4 projection code eck1.

The full name for this projection is Eckert I.

💫 t_proj_eck2 💫

Autogenerated transformation function for Proj4 projection code eck2.

The full name for this projection is Eckert II.

💫 t_proj_eck3 💫

Autogenerated transformation function for Proj4 projection code eck3.

The full name for this projection is Eckert III.

💫 t_proj_eck4 💫

Autogenerated transformation function for Proj4 projection code eck4.

The full name for this projection is Eckert IV.

💫 t_proj_eck5 💫

Autogenerated transformation function for Proj4 projection code eck5.

The full name for this projection is Eckert V.

💫 t_proj_eck6 💫

Autogenerated transformation function for Proj4 projection code eck6.

The full name for this projection is Eckert VI.

💫 t_proj_eqc 💫

Autogenerated transformation function for Proj4 projection code eqc.

The full name for this projection is Equidistant Cylindrical (Plate Carree).

🎯 Projection Parameters

lat_00
lat_ts

💫 t_proj_eqdc 💫

Autogenerated transformation function for Proj4 projection code eqdc.

The full name for this projection is Equidistant Conic.

🎯 Projection Parameters

lat_1
lat_2

✨ `t_proj_eqearth` ✨

okay so this is the autogenerated transformation function for Proj4 projection code eqearth. The full name for this projection is Equal Earth. No Projection Parameters listed here — just pure main character energy. 💖

🦋 `t_proj_etmerc` 🦋

Autogenerated transformation function for Proj4 projection code etmerc. The full name for this projection is Extended Transverse Mercator. No extra params, no stress. ✨

🌸 `t_proj_euler` 🌸

Autogenerated transformation function for Proj4 projection code euler. The full name for this projection is Euler.

Projection Parameters 🎀

lat_1
lat_2

🎀 `t_proj_fahey` 🎀

Autogenerated transformation function for Proj4 projection code fahey. The full name for this projection is Fahey. No Projection Parameters listed. 💅

💖 `t_proj_fouc` 💖

Autogenerated transformation function for Proj4 projection code fouc. The full name for this projection is Foucaut. That's the whole vibe. 🫶

🌈 `t_proj_fouc_s` 🌈

Autogenerated transformation function for Proj4 projection code fouc_s. The full name for this projection is Foucaut Sinusoidal. No Projection Parameters in the house. 🦋

⭐ `t_proj_gall` ⭐

Autogenerated transformation function for Proj4 projection code gall. The full name for this projection is Gall (Gall Stereographic). No extra params listed. 👑

💀 `t_proj_geoc` 💀

Autogenerated transformation function for Proj4 projection code geoc. The full name for this projection is Geocentric Latitude. That's it, bestie. ✨

🍓 `t_proj_geocent` 🍓

Autogenerated transformation function for Proj4 projection code geocent. The full name for this projection is Geocentric. No Projection Parameters listed. 🎀

🧚 `t_proj_geogoffset` 🧚

Autogenerated transformation function for Proj4 projection code geogoffset. The full name for this projection is Geographic Offset. No extra params on the menu. 💜

🛰️ `t_proj_geos` 🛰️

Autogenerated transformation function for Proj4 projection code geos. The full name for this projection is Geostationary Satellite View.

Projection Parameters 🌸

👑 `t_proj_gins8` 👑

Autogenerated transformation function for Proj4 projection code gins8. The full name for this projection is Ginsburg VIII (TsNIIGAiK). No Projection Parameters listed. ⭐

🌊 `t_proj_gn_sinu` 🌊

Autogenerated transformation function for Proj4 projection code gn_sinu. The full name for this projection is General Sinusoidal Series.

Projection Parameters 🎀

🔥 `t_proj_gnom` 🔥

Autogenerated transformation function for Proj4 projection code gnom. The full name for this projection is Gnomonic. No extra params, periodt. 💅

🌍 `t_proj_goode` 🌍

Autogenerated transformation function for Proj4 projection code goode. The full name for this projection is Goode Homolosine. No Projection Parameters listed. 🌈

🧩 `t_proj_gridshift` 🧩

Autogenerated transformation function for Proj4 projection code gridshift. The full name for this projection is Generic grid shift. No extra params here. ✨

🗺️ `t_proj_gs48` 🗺️

Autogenerated transformation function for Proj4 projection code gs48. The full name for this projection is Modified Stereographic of 48 U.S.. No Projection Parameters listed. 💖

🗺️ `t_proj_gs50` 🗺️

Autogenerated transformation function for Proj4 projection code gs50. The full name for this projection is Modified Stereographic of 50 U.S.. No Projection Parameters listed. 💖

🌀 `t_proj_gstmerc` 🌀

Autogenerated transformation function for Proj4 projection code gstmerc. The full name for this projection is Gauss-Schreiber Transverse Mercator (aka Gauss-Laborde Reunion).

Projection Parameters 🎀

k_0
lat_0
lon_0

🐚 `t_proj_guyou` 🐚

Autogenerated transformation function for Proj4 projection code guyou. The full name for this projection is Guyou. No Projection Parameters listed. 🦋

🔨 `t_proj_hammer` 🔨

Autogenerated transformation function for Proj4 projection code hammer. The full name for this projection is Hammer & Eckert-Greifendorff.

Projection Parameters 🌸

🎩 `t_proj_hatano` 🎩

Autogenerated transformation function for Proj4 projection code hatano. The full name for this projection is Hatano Asymmetrical Equal Area. No Projection Parameters listed. ✨

🌌 `t_proj_healpix` 🌌

Autogenerated transformation function for Proj4 projection code healpix. The full name for this projection is HEALPix.

Projection Parameters 🎀

rot_xy

🔄 `t_proj_helmert` 🔄

Autogenerated transformation function for Proj4 projection code helmert. The full name for this projection is 3(6)-, 4(8)- and 7(14)-parameter Helmert shift. No Projection Parameters listed. 💅

↔️ `t_proj_hgridshift` ↔️

Autogenerated transformation function for Proj4 projection code hgridshift. The full name for this projection is Horizontal grid shift. No extra params. 🌈

📈 `t_proj_horner` 📈

Autogenerated transformation function for Proj4 projection code horner. The full name for this projection is Horner polynomial evaluation. No Projection Parameters listed. ⭐

🧵 `t_proj_igh` 🧵

Autogenerated transformation function for Proj4 projection code igh. The full name for this projection is Interrupted Goode Homolosine. No Projection Parameters listed. 💜

🌊 `t_proj_igh_o` 🌊

Autogenerated transformation function for Proj4 projection code igh_o. The full name for this projection is Interrupted Goode Homolosine Oceanic View. No Projection Parameters listed. 🦋

🪡 `t_proj_imoll` 🪡

Autogenerated transformation function for Proj4 projection code imoll. The full name for this projection is Interrupted Mollweide. No Projection Parameters listed. 🎀

🌊 `t_proj_imoll_o` 🌊

Autogenerated transformation function for Proj4 projection code imoll_o. The full name for this projection is Interrupted Mollweide Oceanic View. No Projection Parameters listed. ✨

🗺️ `t_proj_imw_p` 🗺️

Autogenerated transformation function for Proj4 projection code imw_p. The full name for this projection is International Map of the World Polyconic.

Projection Parameters 🎀

lat_1
lat_2
lon_1

⚽ `t_proj_isea` ⚽

Autogenerated transformation function for Proj4 projection code isea. The full name for this projection is Icosahedral Snyder Equal Area. No Projection Parameters listed. 🌈

🧊 `t_proj_kav5` 🧊

Autogenerated transformation function for Proj4 projection code kav5. The full name for this projection is Kavrayskiy V. No Projection Parameters listed. 💙

🧊 `t_proj_kav7` 🧊

Autogenerated transformation function for Proj4 projection code kav7. The full name for this projection is Kavrayskiy VII. No Projection Parameters listed. 💙

🏰 `t_proj_krovak` 🏰

Autogenerated transformation function for Proj4 projection code krovak. The full name for this projection is Krovak. No Projection Parameters listed. 👑

🎀 `t_proj_labrd` 🎀

Autogenerated transformation function for Proj4 projection code labrd. The full name for this projection is Laborde.

Projection Parameters 🌸

lat_0

🌐 `t_proj_laea` 🌐

Autogenerated transformation function for Proj4 projection code laea. The full name for this projection is Lambert Azimuthal Equal Area. No Projection Parameters listed. ✨

🧮 `t_proj_lagrng` 🧮

Autogenerated transformation function for Proj4 projection code lagrng. The full name for this projection is Lagrange.

Projection Parameters 🎀

🍃 `t_proj_larr` 🍃

Autogenerated transformation function for Proj4 projection code larr. The full name for this projection is Larrivee. No Projection Parameters listed. 🌈

🧪 `t_proj_lask` 🧪

Autogenerated transformation function for Proj4 projection code lask. The full name for this projection is Laskowski. No Projection Parameters listed. 💜

🌍 `t_proj_latlon` 🌍

Autogenerated transformation function for Proj4 projection code latlon. The full name for this projection is Lat/long (Geodetic alias). No Projection Parameters listed. 💖

🌍 `t_proj_latlong` 🌍

Autogenerated transformation function for Proj4 projection code latlong. The full name for this projection is Lat/long (Geodetic alias). No Projection Parameters listed. 💖

🗺️ `t_proj_lcc` 🗺️

Autogenerated transformation function for Proj4 projection code lcc. The full name for this projection is Lambert Conformal Conic.

Projection Parameters 🎀

k_0
lat_0
lat_1
lat_2

🗺️ `t_proj_lcca` 🗺️

Autogenerated transformation function for Proj4 projection code lcca. The full name for this projection is Lambert Conformal Conic Alternative.

Projection Parameters 🌸

lat_0

🗺️ `t_proj_leac` 🗺️

Autogenerated transformation function for Proj4 projection code leac. The full name for this projection is Lambert Equal Area Conic.

Projection Parameters 🎀

lat_1
south

🎭 `t_proj_lee_os` 🎭

Autogenerated transformation function for Proj4 projection code lee_os. The full name for this projection is Lee Oblated Stereographic. No Projection Parameters listed. 💅

🌍 `t_proj_longlat` 🌍

Autogenerated transformation function for Proj4 projection code longlat. The full name for this projection is Lat/long (Geodetic alias). No Projection Parameters listed. 💖

🌍 `t_proj_lonlat` 🌍

Autogenerated transformation function for Proj4 projection code lonlat. The full name for this projection is Lat/long (Geodetic). No Projection Parameters listed. 💖

🧭 `t_proj_loxim` 🧭

Autogenerated transformation function for Proj4 projection code loxim. The full name for this projection is Loximuthal. No Projection Parameters listed. ✨

🛰️ `t_proj_lsat` 🛰️

Autogenerated transformation function for Proj4 projection code lsat. The full name for this projection is Space oblique for LANDSAT.

Projection Parameters 🎀

lsat
path

🌸 `t_proj_mbt_fps` 🌸

Autogenerated transformation function for Proj4 projection code mbt_fps. The full name for this projection is McBryde-Thomas Flat-Pole Sine (No. 2). No Projection Parameters listed. 🎀

🌸 `t_proj_mbt_s` 🌸

Autogenerated transformation function for Proj4 projection code mbt_s. The full name for this projection is McBryde-Thomas Flat-Polar Sine (No. 1). No Projection Parameters listed. 🎀

🌸 `t_proj_mbtfpp` 🌸

Autogenerated transformation function for Proj4 projection code mbtfpp. The full name for this projection is McBride-Thomas Flat-Polar Parabolic. No Projection Parameters listed. 🎀

🌸 `t_proj_mbtfpq` 🌸

Autogenerated transformation function for Proj4 projection code mbtfpq. The full name for this projection is McBryde-Thomas Flat-Polar Quartic. No Projection Parameters listed. 🎀

🌸 `t_proj_mbtfps` 🌸

Autogenerated transformation function for Proj4 projection code mbtfps. The full name for this projection is McBryde-Thomas Flat-Polar Sinusoidal. No Projection Parameters listed. 🎀

🌐 `t_proj_merc` 🌐

Autogenerated transformation function for Proj4 projection code merc. The full name for this projection is Mercator.

Projection Parameters 🎀

lat_ts

🎨 `t_proj_mil_os` 🎨

Autogenerated transformation function for Proj4 projection code mil_os. The full name for this projection is Miller Oblated Stereographic. No Projection Parameters listed. 💜

🧊 `t_proj_mill` 🧊

Autogenerated transformation function for Proj4 projection code mill. The full name for this projection is Miller Cylindrical. No Projection Parameters listed. 💙

🛰️ `t_proj_misrsom` 🛰️

Autogenerated transformation function for Proj4 projection code misrsom. The full name for this projection is Space oblique for MISR.

Projection Parameters 🎀

path

🏰 `t_proj_mod_krovak` 🏰

Autogenerated transformation function for Proj4 projection code mod_krovak. The full name for this projection is Modified Krovak. No Projection Parameters listed. 👑

🌍 `t_proj_moll` 🌍

Autogenerated transformation function for Proj4 projection code moll. The full name for this projection is Mollweide. No Projection Parameters listed. 🌈

🔄 `t_proj_molobadekas` 🔄

Autogenerated transformation function for Proj4 projection code molobadekas. The full name for this projection is Molodensky-Badekas transformation. No Projection Parameters listed. 💅

🔄 `t_proj_molodensky` 🔄

Autogenerated transformation function for Proj4 projection code molodensky. The full name for this projection is Molodensky transform. No Projection Parameters listed. 💅

🧑‍🤝‍🧑 `t_proj_murd1` 🧑‍🤝‍🧑

Autogenerated transformation function for Proj4 projection code murd1. The full name for this projection is Murdoch I.

Projection Parameters 🎀

lat_1
lat_2

🧑‍🤝‍🧑 `t_proj_murd2` 🧑‍🤝‍🧑

Autogenerated transformation function for Proj4 projection code murd2. The full name for this projection is Murdoch II.

Projection Parameters 🎀

lat_1
lat_2

🧑‍🤝‍🧑 `t_proj_murd3` 🧑‍🤝‍🧑

Autogenerated transformation function for Proj4 projection code murd3. The full name for this projection is Murdoch III.

Projection Parameters 🎀

lat_1
lat_2

`t_proj_natearth`

Autogenerated transformation function for Proj4 projection code natearth. 🤖

The full name for this projection is Natural Earth.

`t_proj_natearth2`

Autogenerated transformation function for Proj4 projection code natearth2. 🤖

The full name for this projection is Natural Earth 2.

`t_proj_nell`

Autogenerated transformation function for Proj4 projection code nell. 🤖

The full name for this projection is Nell.

`t_proj_nell_h`

Autogenerated transformation function for Proj4 projection code nell_h. 🤖

The full name for this projection is Nell-Hammer.

`t_proj_nicol`

Autogenerated transformation function for Proj4 projection code nicol. 🤖

The full name for this projection is Nicolosi Globular.

`t_proj_noop`

Autogenerated transformation function for Proj4 projection code noop. 🤖

The full name for this projection is No operation. bestie it literally does nothing and that's the whole point, iconic behaviour honestly 💅

`t_proj_nsper`

Autogenerated transformation function for Proj4 projection code nsper. 🤖

The full name for this projection is Near-sided perspective.

Projection Parameters

`t_proj_nzmg`

Autogenerated transformation function for Proj4 projection code nzmg. 🤖

The full name for this projection is New Zealand Map Grid.

`t_proj_ob_tran`

Autogenerated transformation function for Proj4 projection code ob_tran. 🤖

The full name for this projection is General Oblique Transformation.

Projection Parameters

o_alpha
o_lat_1
o_lat_2
o_lat_c
o_lat_p
o_lon_1
o_lon_2
o_lon_c
o_lon_p
o_proj

`t_proj_ocea`

Autogenerated transformation function for Proj4 projection code ocea. 🤖

The full name for this projection is Oblique Cylindrical Equal Area.

Projection Parameters

lat_1
lat_2
lon_1
lon_2

`t_proj_oea`

Autogenerated transformation function for Proj4 projection code oea. 🤖

The full name for this projection is Oblated Equal Area.

Projection Parameters

m
n
theta

`t_proj_omerc`

Autogenerated transformation function for Proj4 projection code omerc. 🤖

The full name for this projection is Oblique Mercator.

Projection Parameters

alpha
gamma
lat_1
lat_2
lon_1
lon_2
lonc
no_off

`t_proj_ortel`

Autogenerated transformation function for Proj4 projection code ortel. 🤖

The full name for this projection is Ortelius Oval.

`t_proj_ortho`

Autogenerated transformation function for Proj4 projection code ortho. 🤖

The full name for this projection is Orthographic.

`t_proj_patterson`

Autogenerated transformation function for Proj4 projection code patterson. 🤖

The full name for this projection is Patterson Cylindrical.

`t_proj_pconic`

Autogenerated transformation function for Proj4 projection code pconic. 🤖

The full name for this projection is Perspective Conic.

Projection Parameters

lat_1
lat_2

`t_proj_peirce_q`

Autogenerated transformation function for Proj4 projection code peirce_q. 🤖

The full name for this projection is Peirce Quincuncial.

`t_proj_pipeline`

Autogenerated transformation function for Proj4 projection code pipeline. 🤖

The full name for this projection is Transformation pipeline manager. the way this one runs a whole little assembly line of transformations?? obsessed 🫶

`t_proj_poly`

Autogenerated transformation function for Proj4 projection code poly. 🤖

The full name for this projection is Polyconic (American).

`t_proj_pop`

Autogenerated transformation function for Proj4 projection code pop. 🤖

The full name for this projection is Retrieve coordinate value from pipeline stack.

`t_proj_push`

Autogenerated transformation function for Proj4 projection code push. 🤖

The full name for this projection is Save coordinate value on pipeline stack.

`t_proj_putp1`

Autogenerated transformation function for Proj4 projection code putp1. 🤖

The full name for this projection is Putnins P1.

`t_proj_putp2`

Autogenerated transformation function for Proj4 projection code putp2. 🤖

The full name for this projection is Putnins P2.

`t_proj_putp3`

Autogenerated transformation function for Proj4 projection code putp3. 🤖

The full name for this projection is Putnins P3.

`t_proj_putp3p`

Autogenerated transformation function for Proj4 projection code putp3p. 🤖

The full name for this projection is Putnins P3'.

`t_proj_putp4p`

Autogenerated transformation function for Proj4 projection code putp4p. 🤖

The full name for this projection is Putnins P4'.

`t_proj_putp5`

Autogenerated transformation function for Proj4 projection code putp5. 🤖

The full name for this projection is Putnins P5.

`t_proj_putp5p`

Autogenerated transformation function for Proj4 projection code putp5p. 🤖

The full name for this projection is Putnins P5'.

`t_proj_putp6`

Autogenerated transformation function for Proj4 projection code putp6. 🤖

The full name for this projection is Putnins P6.

`t_proj_putp6p`

Autogenerated transformation function for Proj4 projection code putp6p. 🤖

The full name for this projection is Putnins P6'.

`t_proj_qsc`

Autogenerated transformation function for Proj4 projection code qsc. 🤖

The full name for this projection is Quadrilateralized Spherical Cube. that's a whole mouthful and I respect it 💜

`t_proj_qua_aut`

Autogenerated transformation function for Proj4 projection code qua_aut. 🤖

The full name for this projection is Quartic Authalic.

`t_proj_rhealpix`

Autogenerated transformation function for Proj4 projection code rhealpix. 🤖

The full name for this projection is rHEALPix.

Projection Parameters

north_square
south_square

`t_proj_robin`

Autogenerated transformation function for Proj4 projection code robin. 🤖

The full name for this projection is Robinson.

`t_proj_rouss`

Autogenerated transformation function for Proj4 projection code rouss. 🤖

The full name for this projection is Roussilhe Stereographic.

`t_proj_rpoly`

Autogenerated transformation function for Proj4 projection code rpoly. 🤖

The full name for this projection is Rectangular Polyconic.

Projection Parameters

lat_ts

`t_proj_s2`

Autogenerated transformation function for Proj4 projection code s2. 🤖

The full name for this projection is S2.

`t_proj_sch`

Autogenerated transformation function for Proj4 projection code sch. 🤖

The full name for this projection is Spherical Cross-track Height.

Projection Parameters

h_0
phdg_0
plat_0
plon_0

`t_proj_set`

Autogenerated transformation function for Proj4 projection code set. 🤖

The full name for this projection is Set coordinate value.

`t_proj_sinu`

Autogenerated transformation function for Proj4 projection code sinu. 🤖

The full name for this projection is Sinusoidal (Sanson-Flamsteed).

`t_proj_som`

Autogenerated transformation function for Proj4 projection code som. 🤖

The full name for this projection is Space Oblique Mercator.

Projection Parameters

asc_lon
inc_angle
ps_rev

`t_proj_somerc`

Autogenerated transformation function for Proj4 projection code somerc. 🤖

The full name for this projection is Swiss. Obl. Mercator.

`t_proj_stere`

Autogenerated transformation function for Proj4 projection code stere. 🤖

The full name for this projection is Stereographic.

Projection Parameters

lat_ts

`t_proj_sterea`

Autogenerated transformation function for Proj4 projection code sterea. 🤖

The full name for this projection is Oblique Stereographic Alternative.

`t_proj_tcc`

Autogenerated transformation function for Proj4 projection code tcc. 🤖

The full name for this projection is Transverse Central Cylindrical.

`t_proj_tcea`

Autogenerated transformation function for Proj4 projection code tcea. 🤖

The full name for this projection is Transverse Cylindrical Equal Area.

`t_proj_times`

Autogenerated transformation function for Proj4 projection code times. 🤖

The full name for this projection is Times.

`t_proj_tinshift`

Autogenerated transformation function for Proj4 projection code tinshift. 🤖

The full name for this projection is Triangulation based transformation.

`t_proj_tissot`

Autogenerated transformation function for Proj4 projection code tissot. 🤖

The full name for this projection is Tissot.

Projection Parameters

lat_1
lat_2

`t_proj_tmerc`

Autogenerated transformation function for Proj4 projection code tmerc. 🤖

The full name for this projection is Transverse Mercator.

Projection Parameters

approx

`t_proj_tobmerc`

Autogenerated transformation function for Proj4 projection code tobmerc. 🤖

The full name for this projection is Tobler-Mercator.

`t_proj_topocentric`

Autogenerated transformation function for Proj4 projection code topocentric. 🤖

The full name for this projection is Geocentric/Topocentric conversion.

`t_proj_tpeqd`

Autogenerated transformation function for Proj4 projection code tpeqd. 🤖

The full name for this projection is Two Point Equidistant.

Projection Parameters

lat_1
lat_2
lon_1
lon_2

`t_proj_tpers`

Autogenerated transformation function for Proj4 projection code tpers. 🤖

The full name for this projection is Tilted perspective.

Projection Parameters

azi
h
tilt

`t_proj_unitconvert`

Autogenerated transformation function for Proj4 projection code unitconvert. 🤖

The full name for this projection is Unit conversion.

`t_proj_ups`

Autogenerated transformation function for Proj4 projection code ups. 🤖

The full name for this projection is Universal Polar Stereographic.

Projection Parameters

south

`t_proj_urm5`

Autogenerated transformation function for Proj4 projection code urm5. 🤖

The full name for this projection is Urmaev V.

Projection Parameters

alpha
n
q

`t_proj_urmfps`

Autogenerated transformation function for Proj4 projection code urmfps. 🤖

The full name for this projection is Urmaev Flat-Polar Sinusoidal.

Projection Parameters

`t_proj_utm`

Autogenerated transformation function for Proj4 projection code utm. 🤖

The full name for this projection is Universal Transverse Mercator (UTM).

Projection Parameters

approx
south
zone

`t_proj_vandg`

Autogenerated transformation function for Proj4 projection code vandg. 🤖

The full name for this projection is van der Grinten (I).

`t_proj_vandg2`

Autogenerated transformation function for Proj4 projection code vandg2. 🤖

The full name for this projection is van der Grinten II.

`t_proj_vandg3`

Autogenerated transformation function for Proj4 projection code vandg3. 🤖

The full name for this projection is van der Grinten III.

`t_proj_vandg4`

Autogenerated transformation function for Proj4 projection code vandg4. 🤖

The full name for this projection is van der Grinten IV.

`t_proj_vertoffset`

Autogenerated transformation function for Proj4 projection code vertoffset. 🤖

The full name for this projection is Vertical Offset and Slope.

Projection Parameters

dh
lat_0
lon_0
slope_lat
slope_lon

`t_proj_vgridshift`

bestie it's an autogenerated transformation function for the Proj4 projection code vgridshift, okay?? ✨

the full name for this projection is Vertical grid shift. 💅

`t_proj_vitk1`

autogenerated transformation function for Proj4 projection code vitk1. 🌸

full name? Vitkovsky I. iconic.

Projection Parameters 🎀

lat_1
lat_2

`t_proj_wag1`

autogenerated transformation function for Proj4 projection code wag1 — no cap, it just shows up and does the thing. 🦋

the full name for this projection is Wagner I (Kavrayskiy VI).

`t_proj_wag2`

autogenerated transformation function for Proj4 projection code wag2. 💜

full name: Wagner II.

`t_proj_wag3`

autogenerated transformation function for Proj4 projection code wag3 ✨

full name is Wagner III.

Projection Parameters 🎀

lat_ts

`t_proj_wag4`

autogenerated transformation function for Proj4 projection code wag4. 🌈

the full name for this projection is Wagner IV.

`t_proj_wag5`

autogenerated transformation function for Proj4 projection code wag5. 💖

full name: Wagner V.

`t_proj_wag6`

autogenerated transformation function for Proj4 projection code wag6. 🧚

the full name for this projection is Wagner VI.

`t_proj_wag7`

autogenerated transformation function for Proj4 projection code wag7 👑

full name: Wagner VII. the whole Wagner family said "we're all coming to the function list" and honestly? respect. 😌

`t_proj_webmerc`

autogenerated transformation function for Proj4 projection code webmerc — yes THE one, the map projection of the entire internet. 🔥

the full name for this projection is Web Mercator / Pseudo Mercator.

`t_proj_weren`

autogenerated transformation function for Proj4 projection code weren. ⭐

full name: Werenskiold I.

`t_proj_wink1`

autogenerated transformation function for Proj4 projection code wink1. 💫

the full name for this projection is Winkel I.

Projection Parameters 🎀

lat_ts

`t_proj_wink2`

autogenerated transformation function for Proj4 projection code wink2. 🌸

full name: Winkel II.

Projection Parameters 🎀

lat_1

`t_proj_wintri`

autogenerated transformation function for Proj4 projection code wintri. 🦋

the full name for this projection is Winkel Tripel.

Projection Parameters 🎀

lat_1

`t_proj_xyzgridshift`

autogenerated transformation function for Proj4 projection code xyzgridshift — that's a whole lotta name but she's worth it. 💅

the full name for this projection is Geocentric grid shift.

💖 AUTHOR & MAINTAINER 💖

the person behind all of this, the main character of the credits:

Judd Taylor, Orbital Systems, Ltd. — judd dot t at orbitalsystems dot com 🫶

and that's a wrap on the whole page, bestie!! 🌈🎀✨ this one came from perl v5.38.2, dated 2024-04-10, filed under Proj4(3pm) — you read all four parts, you're literally a scholar now, periodt. 👑💖

📦 where this page comes from

ubuntu noble: pdl 1:2.085-1ubuntu1 · Artistic-1.0-Perl OR GPL-1.0-or-later
💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash on 2026-10-14: a language model's rewrite of the original, under its terms

Proj4(3pm)

✨ Proj4(3pm) ✨

💖 NAME 💖

🎀 SYNOPSIS 🎀

🦋 DESCRIPTION 🦋

🧚 GENERALIZED INTERFACE 🧚

🌈 ALIASED INTERFACE 🌈

👑 PARAMETERS AVAILABLE IN ALL PROJECTIONS 👑

🌱 General Parameters 🌱

🌍 Earth Figure Parameters 🌍

⭐ FUNCTIONS ⭐

💫 t_proj 💫

💫 t_proj_adams_hemi 💫

💫 t_proj_adams_ws1 💫

💫 t_proj_adams_ws2 💫

💫 t_proj_aea 💫

🎯 Projection Parameters

💫 t_proj_aeqd 💫

🎯 Projection Parameters

💫 t_proj_affine 💫

💫 t_proj_airy 💫

🎯 Projection Parameters

💫 t_proj_aitoff 💫

💫 t_proj_alsk 💫

💫 t_proj_apian 💫

💫 t_proj_august 💫

💫 t_proj_axisswap 💫

💫 t_proj_bacon 💫

💫 t_proj_bertin1953 💫

💫 t_proj_bipc 💫

💫 t_proj_boggs 💫

💫 t_proj_bonne 💫

🎯 Projection Parameters

💫 t_proj_calcofi 💫

💫 t_proj_cart 💫

💫 t_proj_cass 💫

💫 t_proj_cc 💫

💫 t_proj_ccon 💫

🎯 Projection Parameters

💫 t_proj_cea 💫

🎯 Projection Parameters

💫 t_proj_chamb 💫

🎯 Projection Parameters

💫 t_proj_col_urban 💫

🎯 Projection Parameters

💫 t_proj_collg 💫

💫 t_proj_comill 💫

💫 t_proj_crast 💫

💫 t_proj_defmodel 💫

💫 t_proj_deformation 💫

💫 t_proj_denoy 💫

💫 t_proj_eck1 💫

💫 t_proj_eck2 💫

💫 t_proj_eck3 💫

💫 t_proj_eck4 💫

💫 t_proj_eck5 💫

💫 t_proj_eck6 💫

💫 t_proj_eqc 💫

🎯 Projection Parameters

💫 t_proj_eqdc 💫

🎯 Projection Parameters

✨ t_proj_eqearth ✨

🦋 t_proj_etmerc 🦋

🌸 t_proj_euler 🌸

Projection Parameters 🎀

🎀 t_proj_fahey 🎀

💖 t_proj_fouc 💖

🌈 t_proj_fouc_s 🌈

⭐ t_proj_gall ⭐

💀 t_proj_geoc 💀

🍓 t_proj_geocent 🍓

🧚 t_proj_geogoffset 🧚

🛰️ t_proj_geos 🛰️

Projection Parameters 🌸

👑 t_proj_gins8 👑

🌊 t_proj_gn_sinu 🌊

Projection Parameters 🎀

🔥 t_proj_gnom 🔥

🌍 t_proj_goode 🌍

🧩 t_proj_gridshift 🧩

✨ `t_proj_eqearth` ✨

🦋 `t_proj_etmerc` 🦋

🌸 `t_proj_euler` 🌸

🎀 `t_proj_fahey` 🎀

💖 `t_proj_fouc` 💖

🌈 `t_proj_fouc_s` 🌈

⭐ `t_proj_gall` ⭐

💀 `t_proj_geoc` 💀

🍓 `t_proj_geocent` 🍓

🧚 `t_proj_geogoffset` 🧚

🛰️ `t_proj_geos` 🛰️

👑 `t_proj_gins8` 👑

🌊 `t_proj_gn_sinu` 🌊

🔥 `t_proj_gnom` 🔥

🌍 `t_proj_goode` 🌍

🧩 `t_proj_gridshift` 🧩

🗺️ `t_proj_gs48` 🗺️

🗺️ `t_proj_gs50` 🗺️

🌀 `t_proj_gstmerc` 🌀

🐚 `t_proj_guyou` 🐚

🔨 `t_proj_hammer` 🔨

🎩 `t_proj_hatano` 🎩

🌌 `t_proj_healpix` 🌌

🔄 `t_proj_helmert` 🔄

↔️ `t_proj_hgridshift` ↔️

📈 `t_proj_horner` 📈

🧵 `t_proj_igh` 🧵

🌊 `t_proj_igh_o` 🌊

🪡 `t_proj_imoll` 🪡

🌊 `t_proj_imoll_o` 🌊

🗺️ `t_proj_imw_p` 🗺️

⚽ `t_proj_isea` ⚽

🧊 `t_proj_kav5` 🧊

🧊 `t_proj_kav7` 🧊

🏰 `t_proj_krovak` 🏰

🎀 `t_proj_labrd` 🎀

🌐 `t_proj_laea` 🌐

🧮 `t_proj_lagrng` 🧮

🍃 `t_proj_larr` 🍃

🧪 `t_proj_lask` 🧪

🌍 `t_proj_latlon` 🌍

🌍 `t_proj_latlong` 🌍

🗺️ `t_proj_lcc` 🗺️

🗺️ `t_proj_lcca` 🗺️

🗺️ `t_proj_leac` 🗺️

🎭 `t_proj_lee_os` 🎭

🌍 `t_proj_longlat` 🌍

🌍 `t_proj_lonlat` 🌍

🧭 `t_proj_loxim` 🧭

🛰️ `t_proj_lsat` 🛰️

🌸 `t_proj_mbt_fps` 🌸

🌸 `t_proj_mbt_s` 🌸

🌸 `t_proj_mbtfpp` 🌸

🌸 `t_proj_mbtfpq` 🌸

🌸 `t_proj_mbtfps` 🌸

🌐 `t_proj_merc` 🌐

🎨 `t_proj_mil_os` 🎨

🧊 `t_proj_mill` 🧊

🛰️ `t_proj_misrsom` 🛰️

🏰 `t_proj_mod_krovak` 🏰

🌍 `t_proj_moll` 🌍

🔄 `t_proj_molobadekas` 🔄

🔄 `t_proj_molodensky` 🔄

🧑‍🤝‍🧑 `t_proj_murd1` 🧑‍🤝‍🧑

🧑‍🤝‍🧑 `t_proj_murd2` 🧑‍🤝‍🧑

🧑‍🤝‍🧑 `t_proj_murd3` 🧑‍🤝‍🧑

`t_proj_natearth`

`t_proj_natearth2`

`t_proj_nell`

`t_proj_nell_h`

`t_proj_nicol`