What are map projections?Projection basics for GIS professionalsThe geoid, ellipsoid, spheroid, and datum, and how they are relatedIdentifying an unknown coordinate systemConverting degrees-minutes-seconds values to decimal Ddegree valuesWhat are geographic coordinate systems?Spheroids and spheresDatumsNorth American datumsWhat happens to features at +/-180 (dateline)?GCS_Assumed_Geographic_1What are projected coordinate systems?About map projectionsProjection typesConic projectionsCylindrical projectionsPlanar projectionsOther projectionsProjection parametersChoosing an appropriate transformationGeographic transformation methodsEquation-based methodsGrid-based methodsWhat are vertical coordinate systems?Vertical datumsGeoidList of supported map projectionsAitoffAlaska gridAlaska series EAlbers Equal Area ConicAzimuthal EquidistantBehrmann Equal Area CylindricalBerghaus StarBipolar oblique conformal conicBonneCassini-SoldnerChamberlin trimetricCraster ParabolicCubeCylindrical Equal AreaDouble StereographicEckert IEckert IIEckert IIIEckert IVEckert VEckert VIEquidistant ConicEquidistant CylindricalEquirectangularFullerGall's StereographicGauss-KrügerGeocentric Coordinate SystemGeographic Coordinate SystemGnomonicGoodes HomolosineGreat Britain National GridHammer-AitoffHotine Oblique MercatorKrovakLambert Azimuthal Equal AreaLambert Conformal ConicLocal Cartesian ProjectionLoximuthalMcBryde-Thomas Flat-Polar QuarticMercatorMiller CylindricalMollweideNew Zealand National GridOrthographicPerspectivePlate CarréePolar StereographicPolyconicQuartic AuthalicRectified Skewed OrthomorphicRobinsonSimple ConicSinusoidalSpace oblique MercatorState Plane Coordinate SystemStereographicTimes projectionTransverse MercatorTwo-Point EquidistantUniversal Polar StereographicUniversal Transverse MercatorVan der Grinten IVertical Near-Side PerspectiveWinkel IWinkel IIWinkel Tripel