The collection tree
CAFE holds — collections nested up to
— levels deep. Both diagrams below are drawn from the
same roll-up, computed in analysis/R/05-collections.R, and both scale
every subcollection by its holdings.
Dendrogram
The hierarchy as it is: every collection under CAFE, positioned by its parent, with the node scaled to its holdings and shaded by how deep it sits. Node area is proportional to the measure, so a collection with four times the datasets has four times the area. Click a node to collapse or expand its branch; drag to pan.
CAFE subtree
Treemap
The same tree with area doing all the work. A dendrogram makes the structure legible but gives a collection of four datasets nearly as much room as one of five hundred; a treemap gives every collection exactly its share of the rectangle, at the cost of showing the nesting only through containment. Neither is the better diagram, which is why both are here.