d3.stackOffsetWiggle(series, order) Shifts the baseline so as to minimize the weighted wiggle of layers. This offset is recommended for streamgraphs in conjunction with the inside-out order. See Stacked Graphs—Geometry & Aesthetics by Bryon & Wattenberg for more information.

d3.forceX([x]) Creates a new positioning force along the x-axis towards the given position x. If x is not specified, it defaults to 0.

simulation.alpha([alpha]) If alpha is specified, sets the current alpha to the specified number in the range [0,1] and returns this simulation. If alpha is not specified, returns the current alpha value, which defaults to 1.

tsv2csv [options…] [file] Equivalent to dsv2dsv, but the input delimiter defaults to the tab character (\t).

d3.scaleIdentity() Constructs a new identity scale with the unit domain [0, 1] and the unit range [0, 1].

d3.utcFormat(specifier) An alias for locale.utcFormat on the default locale.

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.transpose(matrix) Uses the zip operator as a two-dimensional matrix transpose.

d3.cluster() Creates a new cluster layout with default settings.

radialArea.angle([angle]) Equivalent to area.x, except the accessor returns the angle in radians, with 0 at -y (12 o’clock).