Methods to drawtree view fromtree-shaped data structure in Wikidata.

By putting the code{{Tree|property=184|items=Q7251|recursion=10}} using the template{{Tree}}, the following tree graph automatically appears. The code means "Tracking items throughdoctoral advisor(P184), starting fromAlan Turing(Q7251), until 10 items depth." The black dots "•" appears in the tree means the end of branch. The template{{Tree}} internally using Lua moduleModule:Tree which is the program written inLua language.

By customizing Lua code, you can draw the tree with additional features. For example, by putting code{{ #invoke:Haplogroup | main | firstItemId = Q351265 | maxdepth = 7}} (using the customized Lua codeModule:Haplogroup), the following tree appears. The tree automatically shows links to Wikipedia, Commons, and external website, by retrieving data stored in each Wikidata item pages.

Lua error in Module:Haplogroup at line 122: bad argument #1 to 'pairs' (table expected, got nil).

{{Wikidata/FamilyTree}} generates family trees of various styles by trackingfather(P22),mother(P25), andchild(P40). As an example, by putting the code{{Wikidata/FamilyTree|title={{Q|Q9682}}|entityId=Q9682}}, following tree appears.

Mediawiki extension "Graph" can draw tree-like structures. For demos, seemw:Extension:Graph/Demo#Trees. As of September, 2019,Graph extension is not stable compared with Lua functions. But the extension can draw beautiful interactive graphs. There are templates which uses Graph extension functionalities to draw graphs, like{{Force-directed graph}},{{Forward graph}}, or{{Reverse graph}}. For example, the code{{Forward graph|Q7251|P184|width=200|height=200|depth=2}} generate the following graph automatically.

Graphs are temporarily unavailable due to technical issues.

• Wikidata:SPARQL_query_service/queries/examples#Tree
• b:en:SPARQL/Views#Tree
• Landlocked countries bordering coastal countries

1. Gohttps://query.wikidata.org ->
2. Create query and run ->
3. Click "</> code" button at middle-right ->
4. Copy URL ->
5. Paste URL somewhere (for example Notepad) ->
6. Adding at the last of the URL&format=json
7. Example

List view[1]

Radial view[2]

Wikidata generic tree screenshot

Tool to generate trees from Wikidata structures, such as subclasses, administrative divisions, and taxons. Examples:1234

Tool to visualize Wikidata items in a graph form usingD3.js. Examples:1234

• Help:Basic membership properties

• Pages with script errors
• Pages with graphs
• Pages with disabled graphs