.. _projections: ================================================================================ Projections ================================================================================ Projections are coordinate operations that are technically conversions but since projections are so fundamental to PROJ we differentiate them from conversions. Projections map the spherical 3D space to a flat 2D space. .. toctree:: :maxdepth: 1 adams_hemi adams_ws1 adams_ws2 aea aeqd airy aitoff alsk apian august bacon bertin1953 bipc boggs bonne calcofi cass cc ccon cea chamb collg col_urban comill crast denoy eck1 eck2 eck3 eck4 eck5 eck6 eqc eqdc eqearth euler fahey fouc fouc_s gall geos gins8 gn_sinu gnom goode gs48 gs50 guyou hammer hatano healpix rhealpix igh igh_o imw_p isea kav5 kav7 krovak labrd laea lagrng larr lask lcc lcca leac lee_os loxim lsat mbt_s mbt_fps mbtfpp mbtfpq mbtfps merc mil_os mill misrsom moll murd1 murd2 murd3 natearth natearth2 nell nell_h nicol nsper nzmg ob_tran ocea oea omerc ortel ortho patterson pconic peirce_q poly putp1 putp2 putp3 putp3p putp4p putp5 putp5p putp6 putp6p qua_aut qsc robin rouss rpoly s2 sch sinu somerc stere sterea gstmerc tcc tcea times tissot tmerc tobmerc tpeqd tpers ups urm5 urmfps utm vandg vandg2 vandg3 vandg4 vitk1 wag1 wag2 wag3 wag4 wag5 wag6 wag7 webmerc weren wink1 wink2 wintri