d3.geoAzimuthalEquidistant() d3.geoAzimuthalEquidistantRaw The azimuthal equidistant projection; see d3-geo.

d3.geoAzimuthalEquidistant() d3.geoAzimuthalEquidistantRaw The azimuthal equidistant projection.

d3.geoAzimuthalEqualArea() d3.geoAzimuthalEqualAreaRaw The Lambert azimuthal equal-area projection; see d3-geo.

d3.geoAzimuthalEqualArea() d3.geoAzimuthalEqualAreaRaw The azimuthal equal-area projection.

d3.geoAugust() d3.geoAugustRaw August’s epicycloidal conformal projection.

d3.geoArmadillo() d3.geoArmadilloRaw(phi0) The armadillo projection. The default center assumes the default parallel of 20° and should be changed if a different parallel is used. Note: requires clipping to the sphere.

d3.geoArea(feature) Returns the spherical area of the specified GeoJSON feature in steradians. See also path.area, which computes the projected planar area.

d3.geoAlbersUsa() This is a U.S.-centric composite projection of three d3.geoConicEqualArea projections: d3.geoAlbers is used for the lower forty-eight states, and separate conic equal-area projections are used for Alaska and Hawaii. Note that the scale for Alaska is diminished: it is projected at 0.35× its true relative area. This diagram by Philippe Rivière illustrates how this projection uses two rectangular insets for Alaska and Hawaii: See d3-composite-projections for more examples.

d3.geoAlbers() Alber’s equal-area conic projection; see d3-geo.

d3.geoAlbers() The Albers’ equal area-conic projection. This is a U.S.-centric configuration of d3.geoConicEqualArea.