# \#edge-vector

**URL:** https://discourse.julialang.org/tag/edge-vector/817.md

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## [How to retrieve the edge list from a Dict reprepresenting a tree data structure](https://discourse.julialang.org/t/how-to-retrieve-the-edge-list-from-a-dict-reprepresenting-a-tree-data-structure/68802)

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**Author:** [@empet](https://discourse.julialang.org/u/empet)\
**Replies:** 6\
**Last updated:** [September 27, 2021, 5:56pm UTC](https://discourse.julialang.org/t/how-to-retrieve-the-edge-list-from-a-dict-reprepresenting-a-tree-data-structure/68802 "2021-09-27T17:56:29Z")

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I’m reading a tree data structure fron a json file, and I need to retrieve the vector of edge tuples, (parent, child), to define a LightGraphs.SimpleDiGraph and get the node positions via NetworkLayout.Buchheim layou…