d3.easeQuad(t) d3.easeQuadInOut(t) Symmetric quadratic easing; scales

d3.easeCircle(t) d3.easeCircleInOut(t) Symmetric circular easing; scales

elastic.amplitude(a) Returns a new elastic easing with the specified amplitude a.

d3.easeCircleOut(t) Reverse circular easing; equivalent to 1 -

d3.easeSinOut(t) Reverse sinusoidal easing; equivalent to 1 -

d3.easeElastic(t) d3.easeElasticOut(t) Reverse elastic easing; equivalent to 1 -

d3.easeExp(t) d3.easeExpInOut(t) Symmetric exponential easing; scales

d3.easePolyOut(t) Reverse polynomial easing; equivalent to 1 -

d3.easeExpIn(t) Exponential easing; raises 2 to the exponent 10 * (t - 1).

d3.easeLinear(t) Linear easing; the identity function; linear(t) returns t.