circle.radius([radius]) If radius is specified, sets the circle radius to the specified angle in degrees, and returns this circle generator. The radius may also be specified as a function; this function will be invoked whenever a circle is generated, being passed any arguments passed to the circle generator. If radius is not specified, returns the current radius accessor, which defaults to: function radius() { return 90; }

d3.scaleOrdinal([range]) Constructs a new ordinal scale with an empty domain and the specified range. If a range is not specified, it defaults to the empty array; an ordinal scale always returns undefined until a non-empty range is defined.

d3.interpolatePuRd(t) d3.schemePuRd Given a number t in the range [0,1], returns the corresponding color from the “PuRd” sequential color scheme represented as an RGB string.

d3.timerFlush() Immediately invoke any eligible timer callbacks. Note that zero-delay timers are normally first executed after one frame (~17ms). This can cause a brief flicker because the browser renders the page twice: once at the end of the first event loop, then again immediately on the first timer callback. By flushing the timer queue at the end of the first event loop, you can run any zero-delay timers immediately and avoid the flicker.

d3.geoMtFlatPolarSinusoidal() d3.geoMtFlatPolarSinusoidalRaw The McBryde–Thomas flat-polar sinusoidal equal-area projection.

radialArea(data) Equivalent to area.

band.step() Returns the distance between the starts of adjacent bands.

cylindricalEqualArea.parallel([parallel]) Defaults to approximately 38.58°, fitting the world in a 960×500 rectangle.

d3.interpolateHcl(a, b) Returns an HCL color space interpolator between the two colors a and b. The colors a and b need not be in HCL; they will be converted to HCL using d3.hcl. If either color’s hue or chroma is NaN, the opposing color’s channel value is used. The shortest path between hues is used. The return value of the interpolator is an RGB string.

craig.parallel([parallel]) Defaults to 0°.