Treemap node name

[Dominic]

Hi all, i am experimenting with a treemap where different parent nodes
have identical node members, i.e.
["Population",null,0,0],
["Region_A","Population",0,0],
["Region_B","Population",0,0],
["Region_C","Population",0,0],
["Adult","Region_A",1,0],
["Minor","Region_A",1,0],
["Adult","Region_B",1,0],
["Minor","Region_B",1,0],
["Adult","Region_C",1,0],
["Minor","Region_C",1,0]

Currently all nodes are diplayed under parent node "Region_A". If I
change the names (node ID) to distinct names the association to the
parent node works correctly. Is there any other option/workaround then
defining unique node names?

Thanks,
Dominic

[asgallant]

Use the {v: value, f: 'formatted value'} object to create unique nodes with the same display names: 

["Population",null,0,0],
["Region_A","Population",0,0],
["Region_B","Population",0,0],
["Region_C","Population",0,0],

[{v: 'Adult_A', f: "Adult"},"Region_A",1,0],
[{v: 'Minor_A', f: "Minor"},"Region_A",1,0],
[{v: 'Adult_B', f: "Adult"},"Region_B",1,0],
[{v: 'Minor_B', f: "Minor"},"Region_B",1,0],
[{v: 'Adult_C', f: "Adult"},"Region_C",1,0],
[{v: 'Minor_C', f: "Minor"},"Region_C",1,0]