d3.geoLength(feature) Returns the great-arc length of the specified GeoJSON feature in

d3.geoConicConformal() d3.geoConicConformalRaw(phi0, phi1)

stream.sphere() Indicates the sphere (the globe; the unit sphere centered at ⟨0,0,0⟩).

d3.geoRotation(angles) Returns a rotation function

graticule.lines() Returns an array of GeoJSON LineString geometry objects, one for each meridian or parallel for this graticule

d3.geoProjection(project) Constructs a new projection from the specified

stream.polygonStart() Indicates the start of a polygon. The first line of a polygon indicates the exterior ring, and any subsequent

graticule.precision([angle]) If precision is specified, sets the precision for this graticule, in degrees.

project.invert(x, y) The inverse of project

stream.lineStart() Indicates the start of a line or ring. Within a polygon, indicates the start of a ring. The first ring of