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

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

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

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

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

treemap.paddingBottom([padding]) If padding is specified, sets the bottom padding to the specified number or

node.descendants() Returns the array of descendant nodes, starting with this node, then followed by each child in topological

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

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

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