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

node.copy() Return a deep copy of the subtree starting at this node. (The returned deep copy shares the same data

d3.packEnclose(circles) Computes the smallest

pack(root) Lays out the specified root

d3.hierarchy(data[, children]) Constructs a root node from the specified hierarchical data. The specified data

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

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