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Questions tagged [lightgraphs]

22 questions
5
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1 answer

MetaGraphs load and save

How can I save and load a MetaGraph object from LightGraphs, and MetaGraphs, so that if I load the metagraph I still have the metadata? Right now I have a metagraph mg that I save using: LightGraphs.savegraph("net.lg", mg) But trying to reload it…
A.Yazdiha
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4
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3 answers

Generating a weighted and directed network form adjacency matrix in Julia

I want to generate a weighted and directed network from an adjacency matrix in Julia (v0.7). So far I've tried: using LightGraphs using SimpleWeightedGraphs A = rand(100, 100) G = Graph(A) but I get error: ERROR: ArgumentError: Adjacency /…
RM-
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3
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2 answers

Adding custom names for vertices

I want to create a graph with custom vertex names. Is this possible with MetaGraphs.jl ? using MetaGraphs using LightGraphs using GraphPlot # Create empty graph gm = MetaGraph() # Add vertices with properties add_vertex!(gm, :A,…
imantha
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3 answers

How to remove self-loops in Lightgraphs

I am new to Julia and LightGraphs and I have been trying to find the most efficient way of detecting and removing self-loops. So far, the only way I have found is to iterate over all nodes in the Simplegraph, check whether it has a self-loop, and…
pegah
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1 answer

Getting the Vertices numbers from an Edge

I am using the shortest path algorithm from LightGraphs.jl. In the end I want to collect some information about the nodes along the path. In order to do that I need to be able to extract the vertices from the edges that the function gives…
fermion4
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2 answers

Import a graph (network) in Julia

Does anybody now if there is any module that could let me import a graph (network) in Julia? Working with Python, I used the graph-tool package, which served me very well! I have my graphs in .gt file format. Can I use any module in Julia, so that I…
Leonidas Souliotis
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random_configuration_model(N,E) takes to long on LightGraphs.jl

I'm facing problems with the generation of configurational graphs on LightGraphs. Hereafter, the vector E contains the sequence of edges. I have to generate this kind of graph iteratively inside a loop and the example below reproduces the…
Leonardo Ferreira
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2 answers

Is there any faster method to solve differential equations with multidimensional array

I want a solve a complex network system involving higher-order interaction terms acting through a multidimensional array. I have written the corresponding code but it takes too much time to get my results. Is there any possible way to solve the…
MSA
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How to add free edge to graph in LightGraphs (Julia)?

I am adding edges to a simple weighted directed graph (from SimpleWeightedDiGraph() that is part of LightGraphs package) in Julia. Some of the arcs are "free" (null weight). However, when specifying the weight of 0 it is not added as a new edge and…
Berni
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1 answer

Exclude unconnected nodes in LightGraphs

I have generated a network via random draws. Now when I plot the network via LightGraphs.jl I also get the unconnected nodes: However, I wish to exclude those nodes from the graph. Is this possible?
Daniël
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0 answers

Using OpenStreetMapX to create a powergrid graph network

I want to find out a few things about OpenStreetMapX which from what I understand works well with transportation-based networks. I am wondering if it's also possible to use this package along with lightgraphs.jl to create a power grid network. In my…
imantha
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1 answer

Subgraph in LightGraphs - Julia

Say that I have a big network with 10^4 nodes. And then I want to analyse the neighbourhood associated with a random node, say node 10. I can see which are the nodes connected to that node by looking at the 10th row entries of the adjacency matrix,…
dapias
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1 answer

Error while using LightGraphs to load a graph (xml.gz) in Julia

I am trying to load a network in the format xml.gz in Julia by using GraphIO. The code is the following: using LightGraphs using GraphIO D = loadgraphs("test.xml.gz", GraphMLFormat()) and I get the following error: ┌ Warning:…
RiegelGestr
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1 answer

Create Static Directed Graph in Julia

How can I create a Static Directed Graph from an array of tuples in Julia without having to create a Simple Directed Graph first. An example edge list I have is [(1,2),(2,3),(3,4)]. The documentation of StaticGraphs.jl is limited.
decardinb
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Julia module for subgraphing a graph (nodes / vertices and edges) without changing or relabeling node indices?

Terminology note: "vertices"="nodes", "vertex/node labels" = "indices" LightGraphs in Julia changes node indices when producing induced subgraphs. For instance, if a graph has nodes [1, 2, 3, 4], its LightGraphs.induced_subgraph induced by nodes…
JoseOrtiz3
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