datavjs/example/treemap/hierarchy.csv

1	ID	name	size	parentID
2	0	flare
3	1	analytics		0
4	2	cluster		1
5	3	AgglomerativeCluster	3938	2
6	4	CommunityStructure	3812	2
7	5	HierarchicalCluster	6714	2
8	6	MergeEdge	743	2
9	7	graph		0
10	8	BetweennessCentrality	3534	7
11	9	LinkDistance	5731	7
12	10	MaxFlowMinCut	7840	7
13	11	shortestPaths	5914	7
14	12	SpanningTree	3416	7
15	13	optimization		1
16	14	AspectRatioBanker	7074	13