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

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0
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1answer
68 views

Cannot find a way to display an adjacency matrix [on hold]

I have a question about face adjacency graphs. Suppose that I have an adjacency matrix How can I plot something like this?? I tried and it looks too messy. What may be the resulting graphic? Thank ...
1
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1answer
39 views

Graph Edit Distance with Mathematica?

Is there any way to calculate similarity of graphs or the graph edit distance in Mathematica ?
2
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0answers
28 views

Custom graph distribution

I am working with random graphs a lot. It's quite easy to describe random graph using, adjacency matrix or just a list of edges. However I am thinking that I might benefit from describing random ...
1
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1answer
46 views

Finding adjacency matrix of a Mathematica's in-built graph? [closed]

I want to get the adjacency matrix of an in-built graph, say the dodecahedral graph. Naively using AdjacencyMatrix[Dodecahedral] doesn't give it to me. Any ...
5
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0answers
118 views

How to generate a random flow graph?

A flow graph is a rooted directed graph that the root reaches all other vertices. I need to generate a random flow graph in Mathematica. My idea is to use ...
1
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0answers
28 views

ConnectedComponents problem of syntactic structure

In Mathematica 10, ConnectedComponent computes the list of vertices belonging to strongly connected components. In the following simple example with a graph with no edges, the result is as follows: ...
1
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0answers
51 views

Twilight Zelda Guardian Puzzle : Shortest Path Proof [closed]

I'm playing a video game right now and in it is a puzzle (see here). There are solutions to solving it (see here) on the Internet, but I'd like to know if this path is the shortest path (least amount ...
2
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1answer
34 views

Logic behind Graph[edges, VertexLabels -> “Name”]?

I find VertexLabels -> "Name" a strange setting to achieve graph nodes labeled by their index: ...
0
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0answers
58 views
1
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0answers
25 views

DataRange not working in GraphPlot

I am trying to create a a GUI that uses the GraphPlot function to automatically generate graph vertices. I am using the VertexCoordinateRules option to designate that I want some of the vertices to be ...
1
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0answers
70 views
+50

How can I scrape the social network for a subset of users in Twitter?

Clearly one cannot scrawl the entire network... but I'd like to extract a statistically representative sample from the network. More specifically, I'd like to access the graph induced by scraping the ...
1
vote
1answer
128 views

Getting coordinates of a embedded graph [closed]

I have to show how spring embedding works by displaying step-by-step images of a GridGraph[10x10] being embedded from a initial circular form to the final form, which should look somewhat like this: ...
0
votes
1answer
54 views

Import mixed graph from Excel

I am new to Mathematica. I want to use the software as it allows analysis of mixed graphs (directed and undirected edges). I have my network as an Excel spreadsheet of three columns: source, target ...
2
votes
1answer
75 views

Plot a tripartite Graph with its groups separated

I would like to create a Graph like the following: but without edges between vertices in the same group. so I have a graph and I want to plot it such that its ...
0
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2answers
54 views

Question RE DiscreteMarkovProcess Graph Labels

I'm trying to label the arc's of my Markov chain with symbols like $\alpha$, $\beta$, etc., to show how the Markov chain looks abstractly. So, I did this... ...
-3
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1answer
62 views
2
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2answers
107 views

How to create a recursive TreeGraph

How could I create a recursive tree graph, such as one defined by the following: A family of trees $T_n$ are defined recursively as follows, for all integers $n \ge 1$. The tree $T_1$ consists of a ...
2
votes
3answers
137 views

How can I get from a list of characters representing a permutation to graphics showing the cycles?

I am trying to graphically represent cycles in various permutations of the alphabet, and have a question in two parts. I have ...
1
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0answers
57 views

Better layout for large a directed graph?

This shows a directed graph for an iterated n-bit pseudo-random function parameterized by s. ...
7
votes
1answer
139 views

Relaxation of Mass-Spring System with Pinned Masses

Problem Assume that four masses are connected to each other by springs while two of them are pinned down at their initial positions. Find the position of masses when system is at its minimum ...
0
votes
1answer
40 views

How to input an adjacency list?

I am a beginner user of Mathematica, and I have an assignment to construct a graph given n (number of vertices) and an adjacency list. My idea was to make a For cycle that repeats n times, and for ...
1
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0answers
37 views

Better control of vertex positions in GraphPlot?

I am trying to graphically visualize a sort of a transformation network. My program generates a list of vertices and edges and I want to turn that into a visually clear graph fulfilling a few ...
2
votes
0answers
37 views

Replicate CommunityGraphPlot as a Graph

Is it possible to format a Graph object in a similar way to CommunityGraphPlot, but retain it as a Graph? I've been playing with FindGraphCommunities but I'm obviously missing some of the ...
0
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0answers
21 views

How to make the vertices move with the VertexRenderingFunction graphics when clicking and dragging vertices of a layered graph [duplicate]

I have read the suggested similar question here: VertexRenderingFunction (or EdgeRenderingFunction) with movable nodes? and Mr. Wizard's solution. Please could someone help me to apply his method to ...
3
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0answers
41 views

Undocumented options for “BalloonEmbedding” in GraphLayout

From an error message, I see some options of the BalloonEmbedding method for GraphLayout: ...
0
votes
1answer
53 views

Import GEXF graphs into Mathematica?

Is there any smart way to import gephi graphs (*.gexf) into mathematica ? I mean other than converting to *.gml.
7
votes
1answer
199 views

How to set the Y coordinates for a Graph with defined X coordinates to prevent overlap of nodes?

I would like to draw a Graph with defined $x$ coordinates and variable node sizes. If I simply replace the $x$ coordinates of a graph, then nodes can overlap and ...
1
vote
1answer
66 views

Find all perfect matchings of a Graph

I'm trying to find all perfect matchings for some bipartite graphs. For example ...
0
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0answers
35 views

Is it possible to visually edit a graph?

Given a graph, obtained by something like CompleteGraph[5], can I somehow add/remove edges/vertices visually? Or is the only alternative to transform it via ...
1
vote
2answers
65 views

Graph: ordered vertices

I have tried things like ...
1
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2answers
47 views

How can I construct a random graph, which is created by adding orientation to a complete graph?

Given a complete graph on N vertices, how can I randomly orient all of its edges? I thought about starting out with CompleteGraph[n], and then somehow transforming ...
2
votes
2answers
194 views

Can I solve this graph theory problem with Mathematica?

Internet browsing I came across this problem, as can be solved using Mathematica. Edit: The image says: Place the following numbers 1,2,3,4,5,6,7 in the following diagram (all), without repeating any ...
1
vote
1answer
53 views

VertexLabels, EdgeLabels and the direction of the arrows on a directed graph

I want to have three network types. My plan is to put them together in a figure file via marking them with (a) (b) and (c). The figures that I want to have, have some problems. Here is my code ...
1
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0answers
71 views

Draw mesh edge / map a graph to a mesh

I am doing a "force density" method to generate a mesh under certain load. The original mesh is like this: Then, I generate a IncidenceMatrix from the graph for further matrix transformation and ...
4
votes
1answer
425 views

Something interesting about Pi, but something seems amiss

I saw something interesting about text-analysis - bigrams - in Basic Text Analysis in Mathematica I wondered how the bigrams of Pi's digits might appear. As expected, take enough terms and every ...
1
vote
0answers
33 views

Successive addition or deletion of vertices (or edges) in graph

I am trying to perform a kind of dynamic graph simulation where vertices and edges of graph are added and deleted according to the current state of the graph at each time step. I know that there are ...
0
votes
2answers
110 views

Random geometrical graph generation

I would like to generate a random graph on $[0,1]^2$. Each node is connected to one other if the distance between two nodes is say 1/4 or less. Here is an example with 50 nodes and 200 edges I would ...
0
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0answers
42 views

Trying to write a program to find an approximate harmonic function on a given graph using relation method

So given an undirected graph with two vertices that have fixed values assigned to them, a harmonic function is a function that assigns values to all other vertices such that the value assigned to each ...
4
votes
1answer
160 views

VertexRenderingFunction (or EdgeRenderingFunction) with movable nodes?

In GraphPlot, I'd like to use VertexRenderingFunction (VRF) and have the resulting object behave the same way under dragging verticies as it does when I do not use VRF. The same issue occurs for ...
1
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0answers
48 views

What do the default shapes/colors in DiscreteMarkovProcess Graph mean?

In making markov chains, I know how to do that, but I am curious as to what the different colors, and shapes of the vertexes in the graph output mean. as example; ...
0
votes
1answer
47 views

EdgeRenderingFunction For 2 Vertices in a Loop

Assume there is a set of rules: set = {"A" -> "B", "B" -> "A", "B" -> "C", "C" -> "D", "D" -> "A", "C" -> "C"}; which we want to graph using ...
2
votes
2answers
49 views

Efficiently or Elegantly construct linear graph list from vertex pairs

I am processing MRP data, with BOM relations as pairs of part number strings. I want to construct lists that represent the linear graphs defined by these pairs. Here is some code to generate random ...
1
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0answers
20 views

FindIndependentEdgeSet behaves differently in v9 and v10

The following code gets different output in v9 and v10. ...
5
votes
2answers
169 views

Drawing a path which realises the diameter of the graph

So I enter a (0,1) adjacency matrix and I get the following graph: The diameter of this graph is 4. How can I ask that two vertices which realise this diameter be drawn with different filling ...
7
votes
2answers
285 views

Is there a bug in FindClique?

If h is a graph, FindClique[g, {n}] should return a clique on exactly $n$ vertices if one exists in ...
1
vote
1answer
43 views

Adding a title to TreePlot

This is a basic question I am sure, but cannot seem to find the answer in the documentation. Does anyone know how to add a title to a TreePlot?
2
votes
2answers
54 views

Color edges of a multigraph when there are parallel edges using Graph[] and EdgeStyle

This a related question to : How can I display a multigraph with different colored edges? However I'm not using GraphPlot. Instead I'm using Graph and EdgeStyle attribute. Take this graph : How can ...