WGeographic coordinate system
WDenso mapcode
WDiscrete global grid
WED50
WEuropean Terrestrial Reference System 1989
WGaussian grid
WGeography (Ptolemy)
WGlobal Area Reference System
WGrid reference
WHellenic Geodetic Reference System 1987
WTonal system
WHorizontal position representation
WIrish grid reference system
WIrish Transverse Mercator
WISO 6709
WIsraeli Cassini Soldner
WIsraeli Transverse Mercator
WLocal tangent plane coordinates
WMilitary Grid Reference System
WOrdnance Survey National Grid
WPalestine grid
WPROJ
WSOTA Mapping Project
WSpatial reference system
WUnited States National Grid
WUniversal polar stereographic coordinate system
WUniversal Transverse Mercator coordinate system
WWeb Mercator projection