symbol.size([size]) If size is specified, sets the size to the specified function or number and returns this symbol generator. If size is not specified, returns the current size accessor, which defaults to: function size() { return 64; } Specifying the size as a function is useful for constructing a scatterplot with a size encoding. If you wish to scale the symbol to fit a given bounding box, rather than by area, try SVG’s getBBox.

d3.bisect(array, x[, lo[, hi]]) d3.bisectRight(array, x[, lo[, hi]]) Similar to bisectLeft, but returns an insertion point which comes after (to the right of) any existing entries of x in array. The returned insertion point i partitions the array into two halves so that all v <= x for v in array.slice(lo, i) for the left side and all v > x for v in array.slice(i, hi) for the right side.

d3.timeWednesdays(start, stop[, step]) d3.utcWednesdays(start, stop[, step]) Aliases for timeWednesday.range and utcWednesday.range.

d3.interval(callback[, delay[, time]]) Like timer, except the callback is invoked only every delay milliseconds; if delay is not specified, this is equivalent to timer. A suitable replacement for setInterval that is guaranteed to not run in the background. The callback is passed the elapsed time.

path.arcTo(x1, y1, x2, y2, radius) Draws a circular arc segment with the specified radius that starts tangent to the line between the current point and the specified point ⟨x1, y1⟩ and ends tangent to the line between the specified points ⟨x1, y1⟩ and ⟨x2, y2⟩. If the first tangent point is not equal to the current point, a straight line is drawn between the current point and the first tangent point. Equivalent to context.arcTo and uses SVG’s elliptical arc curve commands.

selection.property(name[, value]) Some HTML elements have special properties that are not addressable using attributes or styles, such as a form field’s text value and a checkbox’s checked boolean. Use this method to get or set these properties. If a value is specified, sets the property with the specified name to the specified value on selected elements. If the value is a constant, then all elements are given the same property value; otherwise, if the value is a function, then the function

d3.treemapBinary(node, x0, y0, x1, y1) Recursively partitions the specified nodes into an approximately-balanced binary tree, choosing horizontal partitioning for wide rectangles and vertical partitioning for tall rectangles.

projection.clipAngle([angle]) If angle is specified, sets the projection’s clipping circle radius to the specified angle in degrees and returns the projection. If angle is null, switches to antimeridian cutting rather than small-circle clipping. If angle is not specified, returns the current clip angle which defaults to null. Small-circle clipping is independent of viewport clipping via projection.clipExtent.

tile.scale([scale]) If scale is specified, sets this tile layout’s scale to the specified number scale and returns this tile layout. If scale is not specified, returns the current layout scale.

d3.schemeSet3 An array of twelve categorical colors represented as RGB hexadecimal strings.