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PDL::Transform::Proj4 - PDL::Transform interface to the Proj4 projection library
Contents
Description
Works like PDL::Transform::Cartography, but using the proj library in the background.
Please see the proj library docs at <http://www.remotesensing.org/proj> for more information on proj, and
how to use the library.
Functions
t_proj
This is the main entry point for the generalized interface. See above on its usage.
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
Autogenerated transformation function for Proj4 projection code eqearth.
The full name for this projection is Equal Earth.
t_proj_etmerc
Autogenerated transformation function for Proj4 projection code etmerc.
The full name for this projection is Extended Transverse Mercator.
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.
t_proj_fouc
Autogenerated transformation function for Proj4 projection code fouc.
The full name for this projection is Foucaut.
t_proj_fouc_s
Autogenerated transformation function for Proj4 projection code fouc_s.
The full name for this projection is Foucaut Sinusoidal.
t_proj_gall
Autogenerated transformation function for Proj4 projection code gall.
The full name for this projection is Gall (Gall Stereographic).
t_proj_geoc
Autogenerated transformation function for Proj4 projection code geoc.
The full name for this projection is Geocentric Latitude.
t_proj_geocent
Autogenerated transformation function for Proj4 projection code geocent.
The full name for this projection is Geocentric.
t_proj_geogoffset
Autogenerated transformation function for Proj4 projection code geogoffset.
The full name for this projection is Geographic Offset.
t_proj_geos
Autogenerated transformation function for Proj4 projection code geos.
The full name for this projection is Geostationary Satellite View.
Projection Parameters
h
t_proj_gins8
Autogenerated transformation function for Proj4 projection code gins8.
The full name for this projection is Ginsburg VIII (TsNIIGAiK).
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
m
n
t_proj_gnom
Autogenerated transformation function for Proj4 projection code gnom.
The full name for this projection is Gnomonic.
t_proj_goode
Autogenerated transformation function for Proj4 projection code goode.
The full name for this projection is Goode Homolosine.
t_proj_gs48
Autogenerated transformation function for Proj4 projection code gs48.
The full name for this projection is Modified Stereographic of 48 U.S..
t_proj_gs50
Autogenerated transformation function for Proj4 projection code gs50.
The full name for this projection is Modified Stereographic of 50 U.S..
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.
t_proj_hammer
Autogenerated transformation function for Proj4 projection code hammer.
The full name for this projection is Hammer & Eckert-Greifendorff.
Projection Parameters
M
W
t_proj_hatano
Autogenerated transformation function for Proj4 projection code hatano.
The full name for this projection is Hatano Asymmetrical Equal Area.
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.
t_proj_hgridshift
Autogenerated transformation function for Proj4 projection code hgridshift.
The full name for this projection is Horizontal grid shift.
t_proj_horner
Autogenerated transformation function for Proj4 projection code horner.
The full name for this projection is Horner polynomial evaluation.
t_proj_igh
Autogenerated transformation function for Proj4 projection code igh.
The full name for this projection is Interrupted Goode Homolosine.
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.
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.
t_proj_kav5
Autogenerated transformation function for Proj4 projection code kav5.
The full name for this projection is Kavraisky V.
t_proj_kav7
Autogenerated transformation function for Proj4 projection code kav7.
The full name for this projection is Kavraisky VII.
t_proj_krovak
Autogenerated transformation function for Proj4 projection code krovak.
The full name for this projection is Krovak.
t_proj_labrd
Autogenerated transformation function for Proj4 projection code labrd.
The full name for this projection is Laborde.
t_proj_laea
Autogenerated transformation function for Proj4 projection code laea.
The full name for this projection is Lambert Azimuthal Equal Area.
t_proj_lagrng
Autogenerated transformation function for Proj4 projection code lagrng.
The full name for this projection is Lagrange.
Projection Parameters
W
t_proj_larr
Autogenerated transformation function for Proj4 projection code larr.
The full name for this projection is Larrivee.
t_proj_lask
Autogenerated transformation function for Proj4 projection code lask.
The full name for this projection is Laskowski.
t_proj_latlon
Autogenerated transformation function for Proj4 projection code latlon.
The full name for this projection is Lat/long (Geodetic alias).
t_proj_latlong
Autogenerated transformation function for Proj4 projection code latlong.
The full name for this projection is Lat/long (Geodetic alias).
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.
t_proj_longlat
Autogenerated transformation function for Proj4 projection code longlat.
The full name for this projection is Lat/long (Geodetic alias).
t_proj_lonlat
Autogenerated transformation function for Proj4 projection code lonlat.
The full name for this projection is Lat/long (Geodetic).
t_proj_loxim
Autogenerated transformation function for Proj4 projection code loxim.
The full name for this projection is Loximuthal.
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).
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).
t_proj_mbtfpp
Autogenerated transformation function for Proj4 projection code mbtfpp.
The full name for this projection is McBride-Thomas Flat-Polar Parabolic.
t_proj_mbtfpq
Autogenerated transformation function for Proj4 projection code mbtfpq.
The full name for this projection is McBryde-Thomas Flat-Polar Quartic.
t_proj_mbtfps
Autogenerated transformation function for Proj4 projection code mbtfps.
The full name for this projection is McBryde-Thomas Flat-Polar Sinusoidal.
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.
t_proj_mill
Autogenerated transformation function for Proj4 projection code mill.
The full name for this projection is Miller Cylindrical.
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_moll
Autogenerated transformation function for Proj4 projection code moll.
The full name for this projection is Mollweide.
t_proj_molobadekas
Autogenerated transformation function for Proj4 projection code molobadekas.
The full name for this projection is Molodensky-Badekas transformation.
t_proj_molodensky
Autogenerated transformation function for Proj4 projection code molodensky.
The full name for this projection is Molodensky transform.
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.
t_proj_nsper
Autogenerated transformation function for Proj4 projection code nsper.
The full name for this projection is Near-sided perspective.
Projection Parameters
h
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.
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.
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_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
n
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_vgridshift
Autogenerated transformation function for Proj4 projection code vgridshift.
The full name for this projection is Vertical grid shift.
t_proj_vitk1
Autogenerated transformation function for Proj4 projection code vitk1.
The full name for this projection is Vitkovsky I.
Projection Parameters
lat_1
lat_2
t_proj_wag1
Autogenerated transformation function for Proj4 projection code wag1.
The full name for this projection is Wagner I (Kavraisky VI).
t_proj_wag2
Autogenerated transformation function for Proj4 projection code wag2.
The full name for this projection is Wagner II.
t_proj_wag3
Autogenerated transformation function for Proj4 projection code wag3.
The full name for this projection 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.
The full name for this projection is 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.
The full name for this projection is Wagner VII.
t_proj_webmerc
Autogenerated transformation function for Proj4 projection code webmerc.
The full name for this projection is Web Mercator / Pseudo Mercator.
t_proj_weren
Autogenerated transformation function for Proj4 projection code weren.
The full name for this projection is 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.
The full name for this projection is 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.
The full name for this projection is Geocentric grid shift.
Generalized Interface
The main object here is the PDL::Transform::Proj4 object, aliased to the t_proj() function.
This object accepts all of the standard options described below, but mainly is there to be called with
just the proj_params option defined.
When options are used, they must be used with a '+' before them when placed in the proj_params string,
but that is not required otherwise. See the SYNOPSIS above.
ALIASEDINTERFACE
Other than t_proj(), all of the other transforms below have been autogenerated, and may not work
properly. The main problem is determining the parameters a projection requires from the proj library
itself.
Due to the difficulties in doing this, there may be times when the proj docs specify a parameter for a
projection that won't work using the anon-hash type specification. In that case, just throw that
parameter in the proj_params string, and everything should work fine.
Name
PDL::Transform::Proj4 - PDL::Transform interface to the Proj4 projection library
Parameters Available In All Projections
GeneralParametersproj_params
This is a string containing the proj "plus style" parameters. This would be similar to what you would put
on the command line for the 'proj' tool. Like "+proj=ortho +ellps=WGS84 +lon_0=-90 +lat_0=40".
This parameter overrides the others below when 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 the projection
selected, read the proj docs!
lon_0
Central longitude for the projection. NOTE: 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.
EarthFigureParametersellps
Ellipsoid datum to use. Ex: WGS72, WGS74. See the proj docs and command line tool for 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
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());
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