Questions about handling graphs in Mathematica, graph theory, graph visualization, GraphPlot, the built-in Graph type and the Combinatorica` package.

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1
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0answers
51 views

GraphPlot not working properly

The code ...
3
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1answer
145 views

find cycle in directed graph

Given a digraph G in the form of a list of edges, is there implemented some command that returns a directed cycle in G of ...
13
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2answers
556 views

Animating transition between all graph representations obtained from curated data

Pappus graph is one of many graphs whose various data is contained within Mathematica. Mathematica typically keeps several ways of representing such graphs: ...
0
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1answer
61 views

How do I get a different (random) independent edge set each time I run FindIndependentEdgeSet?

I'd like to use FindIndependentEdgeSet[g] repeatedly to get random maximal matchings of a fixed graph, but each time I call this function it gives me the same answer (i.e. the same list of edges). ...
-1
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1answer
60 views

How to draw a network from a dataset reporting the labels of nodes of every link?

I have a dataset in format .txt of a directed network, containing a matrix A of dimension ...
5
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1answer
70 views
1
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1answer
47 views

VertexSize with GraphPlot [closed]

I'm constructing a graph using GraphPlot and I want some vertices to have a different size than others, like this: ...
1
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1answer
48 views

Get subgraphs: communities of graph g

I have a graph g. I want a set of graphs c which holds the community subgraphs of g. I ...
4
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0answers
102 views

How to draw hypercube graphs

I'd like to draw hypercube projections like those on the Wikipedia page: I tried with HypercubeGraph[6] but the graph does not look right; it is not ...
2
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1answer
72 views

Arranging “ranked” nodes of a graph symmetrically

I have Markov chains with a pair of absorbing states taken from the $n$-length strings formed from {"H","T"} for n at least 3 ...
1
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2answers
155 views
1
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1answer
137 views

Creating an animated graph model based on equations

So I have a graph that looks like this ...
1
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2answers
153 views

Plotting bipartite graph from adjacency matrix

I have an $m\times n$ matrix $A$ representing the adjacencies between the nodes of a bipartite graph. Specifically, the nodes are arranged in two partitions, of $m$ and $n$ nodes respectively, such ...
3
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3answers
121 views

EdgeRenderingFunction on a Graph plot

This is my code, I want each line leaving a vertex to be the same colour from that vertex. So there should be 5 different coloured lines one colour for each vertex. ...
14
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2answers
793 views

Drawing pairs (graph, circle packing)

Circle packing theorem states: For every connected simple planar graph G there is a circle packing in the plane whose intersection graph is (isomorphic to) G. How to use Mathematica to draw examples ...
0
votes
2answers
206 views

Plot “number of triples at each v in V(G)” [closed]

For a uni assignment, I need to plot the "number of triples at each v in V(G)". I tried to find relevant information in the Mathematica documentation through Google, but I'm lost. How do I get the set ...
2
votes
1answer
95 views

Want to label vertices of a graph and manually move them around

I would like to plot a graph in such a way that The vertices are labeled using labels that I've given them, rather than just their number, I can manually move the vertices around. In the code ...
2
votes
1answer
174 views

Plotting attributes of vertices in WattsStrogatzGraphDistribution[n, p, k]

I have a graph WS = RandomGraph[WattsStrogatzGraphDistribution[n, p, k]]. I need to plot several characteristics of each v: the ...
2
votes
1answer
101 views

How to compute the `Automorphisms` of graphs with multiple edges?

I try to compute the Automorphisms of graphs with multiple edges from its AdjacencyMatrix but failed. The following code shows ...
0
votes
1answer
52 views

How should my data be formatted for use with BetweennessCentrality?

A few weeks ago I asked this question. I am trying to upload my data which is an adjacency list for an undirected, unweighed graph and find the betweenness centrality. At the time I tried to use the ...
4
votes
1answer
153 views

How do I make the color of arrowheads in a graph different from the colors of the arrows?

I'm graphing a Markov process mp = DiscreteMarkovProcess[{1, 0, 0}, ({ {0.6, 0.1, 0.3}, {0.2, 0.7, 0.1}, {0.3, 0.3, 0.4} })]; and would like ...
1
vote
1answer
104 views

How do I show the transition probabilities in a graph of a Markov process?

How do I get Graph to display the transition probabilities for a Markov process as labels on the graph's edges? The information is clearly present in the graph, but ...
1
vote
1answer
60 views

What does the VertexMoving method for FindGraphCommunities do?

I've been applying the VertexMoving method to some graph data, and it's producing very useful results. However, I've got no clue as to what this method actually is, and the documentation is ...
0
votes
1answer
129 views

Get histogram of number of vertices per component of graph H

I have a huge graph with ~8k vertices and ~1k components. I want a histogram showing the number of vertices for each component. How do I do this? EDIT: I'm trying ubpdqn's approach, but not gettting ...
0
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2answers
191 views

How to find number of connected components of graph G?

Is there a command that can count the number of components of a graph, in the same way that VertexCount[G] counts vertices?
1
vote
1answer
59 views

Importing adjacency matrix from file of 0/1 arrays

Is it possible to import adjacency matrix for graph representation, from simple text file with NxN (rows x columns) of 0s/1s: 0 1 0 0 1 0 1 1 0 1 0 0 0 1 0 0
4
votes
2answers
117 views

TreePlot, VertexRenderingFunction and stretched vertices issue

Recently I found the following TreePlot issue. For simplicity, I took an example from Mathematica Tree Drawing Tutorial and set ...
1
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1answer
86 views

References on functions FindGraphPartition and FindGraphCommunties

Does somebody have some interesting references on the FindGraphPartition and FindGraphCommunties[.., Method -> "Spectral"] ...
0
votes
1answer
108 views

How do I upload a graph as an adjacency list and find the betweenness centrality?

I have an undirected simple graph in a .txt file formatted as an adjacency list like this: 100 200 200 300 300 400 500 600 700 800 900 ... Every number is a node ...
1
vote
2answers
98 views

How to sort the adjecency matrix of bipartite graph so to have two off-diagonal blocks

In a bipartite graphs there are two class of nodes, say A and B. Each node of class A may interact only with nodes of the class B, and viceversa. The corresponding adjecency matrix is thus composed by ...
1
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1answer
57 views

How do I visualize the result of EdgeColoring[g]?

Combinatorica has a heuristic edge-coloring function EdgeColoring. When I execute it on a graph, the result is a list of integers. My guess is that an integer $i$ ...
1
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0answers
52 views

Why does Network`GraphPlot`wrapper appear in my GraphPlot?

I'm making a GraphPlot of data similar to this: ...
7
votes
3answers
211 views

Different colors for nodes in tree plot

I have some list of numbers which I am plotting using TreePlot. This is the code: ...
6
votes
0answers
82 views

HighlightGraph and Hyperlink

In the documentation of Mathematica it is mentioned that you can use Hyperlink and Tooltip as wrapper in a similar manner as ...
1
vote
1answer
71 views

How do I use Subgraph to sample the $n$ vertices of a graph with the greatest connectivity?

Let $G$ be an arbitrary graph with some number of vertices $||V||$ and some number of edges $||E||$. We can use Subgraph to generate, well, a subgraph of ...
0
votes
1answer
76 views

How to efficiently distinguish the rewired edges in WattsStrogatzGraphDistribution?

The WattsStrogatzGraphDistribution function is a way to construct random graphs based on Watts and Strogatz small world model. The ...
2
votes
1answer
117 views

Plotting Network with LayeredGraphPlot with specific order

I have a network and want to plot it. I use LayeredGraphPlot, and the network is described as: ...
2
votes
0answers
53 views

Can BreadthFirstScan be modified?

I would like to obtain a "slick" implementation of A*-search algorithm on Graph objects, using the built-in BreadthFirstScan (if that is possible at all). I noticed that BreadthFirstScan is static in ...
3
votes
2answers
202 views

Horizontal Tree Layout? [duplicate]

I need to display arbitrary Expressions in TreeForm, but the standard vertical layout produces too many horizontally overlapping boxes. Am I doomed to rewriting ...
2
votes
1answer
54 views

Reversibly abstracting a list of strings as a graph object where vertices represent strings and edge connect pairs of strings based on various tests

Imagine I provide you a list of arbitrary strings, say: Map[StringJoin, Tuples[{"0", "1", "2"}, 4]]. I'd like to abstract these strings as a graph object in ...
1
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1answer
34 views

Check Specific Connections within Graph

Say you have the skeleton of a graph: fullSkele = PolyhedronData["GreatRhombicosidodecahedron", "SkeletonRules"] and you've an arbitrary list of some fraction of ...
2
votes
2answers
113 views

How to make a recursive code from this iterative code? (drawing tree graph)

I have a question about drawing tree graph. I use my iterative code to build a tree graph. Here it is. ...
0
votes
0answers
46 views

Get correlation matrix when using FindGraphCommunities

Does somebody know how to get the correlation matrix when using FindGraphCommunities (Social Network analysis) using the "Spectra" option? Can somebody tell me as ...
1
vote
1answer
74 views

Social Network Analysis - Get the List of InBoundEdges for Directed Graph

I wish to get the list of inwards edges for a node. IncidenceList provides both inwards and outwards list. I can of course filter with ...
3
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1answer
150 views

Social Network Analysis - Get the End Points of an Edge

I want to get the end points of an Edge of a Graph. For example see the following source, ...
6
votes
2answers
291 views
0
votes
1answer
84 views
4
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1answer
129 views

Katz Centrality [closed]

I want to calculate the Katz Centrality of large graphs. The Mathematica command to do that is KatzCentrality[g, $\alpha$] and it is also fast. However I realized that there is a mismatch between ...
5
votes
3answers
354 views

Fast code to generate large random graph with fixed degree sequence

I'm trying to create a function so to generate large random graph with a fixed degree sequence $\{v_1,v_2,\dots,v_N\}$, where $N$ is the number of vertices in the graph. The Mathematica function that ...
0
votes
1answer
159 views

Display a labeled multigraph

Despite the integration of graphs and networks, multigraphs are not supported in Mathematica 8+. In Mathematica 9+, GraphPlot misbehaves for multigraphs having ...