tree.nodeSize([size]) If size is specified, sets this tree layout’s node size to the specified two-element

node.leaves() Returns the array of leaf nodes in traversal order; leaves are nodes with no children.

node.sum(value) Evaluates the specified value function for this node and each descendant in

tree.separation([separation]) If separation is specified, sets the separation accessor to the specified function

treemap.tile([tile]) If tile is specified, sets the

d3.treemapSlice(node, x0, y0, x1, y1) Divides the rectangular area specified by x0, y0

cluster(root) Lays out the specified root

stratify.id([id]) If id is specified, sets the id accessor to the given function and returns this stratify

d3.partition() Creates a new partition layout with the default settings.

d3.treemapSquarify(node, x0, y0, x1, y1) Implements the