projection.scale([scale]) If scale is specified, sets the projection’s scale factor to the specified value

rotation(point) Returns a new array [longitude, latitude] in degrees representing the rotated point of the

path.projection([projection]) If a projection is specified, sets the current projection to the specified projection

d3.geoInterpolate(a, b) Returns an interpolator function given two points a and b. Each point must

projection.clipExtent([extent]) If extent is specified, sets the projection’s viewport clip extent to the specified

d3.geoTransform(methods) Defines an arbitrary transform using the methods defined on the specified methods object.

graticule.outline() Returns a GeoJSON Polygon geometry object representing the outline of this graticule, i.e. along the meridians

d3.geoAlbersUsa()

identity.reflectX([reflect]) If reflect is specified, sets whether or not the x-dimension is reflected

stream.polygonEnd() Indicates the end of a polygon.