How to merge nodes in graph plot for R2020b?

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Jessica Jiaying 2021-3-6

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评论： Jessica Jiaying 2021-3-13

How should I merge nodes in graph plot for R2020b?

I have the following current source_nodes, target_nodes and distances. However, I am looking to merge some of the nodes depending on distance (like for example, 0.25 and below). I have tried to search online and came across nodejoin but it doesn't seem to work for graph plots with nodes and edges.

source_nodes = [1, 2, 3, 4]

target_nodes = [5, 6, 7, 8]

distances = [0.25, 1.00, 2.00, 0.25]

If possible, I would like to merge Nodes 1 and 5 and Nodes 4 and 8 respectively with new label names made from combining their original node labels like '15' and '48'. I need to keep the connectivity to the other nodes the same.

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Answer 1

Shiva Kalyan Diwakaruni 2021-3-11

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Hi,

digraph objects represent directed graphs, which have directional edges connecting the nodes. After you create a digraph object, you can try using the object functions to perform queries against the object.

example :-

e = G.Edges

G = addedge(G,2,3)

G = addnode(G,4)

You can follow the below link showing the example of creating a graph with source ,target nodes and edge weights.

You can also modify the label names by giving the names as one of the parameter to digraph function

https://www.mathworks.com/help/matlab/ref/digraph.html#mw_78e844bf-b1c2-4b22-8fe2-7c3e908f31c5

hope it helps,

thanks.