JGraphT

Use equal vertex in a JGraphT SimpleGraph

由 跟風遠走 提交于 2019-12-25 12:09:52
问题 In Java, want to create a simple graph (a unweighted, undirected graph containing no graph loops or multiple edges) containing vertexes/edges that are equal. I have two Java Classes, one for the vertexes: class Vertex { private int field; public Vertex(int field) { this.field = field; } @Override public boolean equals(Object obj) { if (obj.getClass().getPackage() .equals(this.getClass().getPackage()) && obj.getClass().getName() .equals(this.getClass().getName())) { Vertex vertex = (Vertex)

How can I find the shortest cycle in a Directed, Weighted Graph?

由 戏子无情 提交于 2019-12-23 06:23:50
问题 I am looking for the easiest way to find the shortest cycle in a graph. 回答1: "By the power of Google!" - Heman You can find it here http://en.wikipedia.org/wiki/Floyd%E2%80%93Warshall_algorithm 来源： https://stackoverflow.com/questions/5700148/how-can-i-find-the-shortest-cycle-in-a-directed-weighted-graph

Java JGrapht Bipartite graph

由 戏子无情 提交于 2019-12-23 03:11:45
问题 I seen examples of jgraph and jgrapht and there easy to follow but now sure how I would go about using the CompleteBipartiteGraph? How is the syntax to be used to instantiate the graph? http://jgrapht.org/javadoc/ http://jgrapht.org/javadoc/org/jgrapht/generate/CompleteBipartiteGraphGenerator.html 回答1: In response to the question "Could I still use this generator?" from the comment: You could still use it to create a complete bipartite graph, and then randomly remove some edges. But a more

Drawing a SimpleWeightedGraph on a JPanel

由 a 夏天 提交于 2019-12-21 12:03:50
问题 I have a SimpleWeightedGraph and I want to draw it on a JPanel in a JFrame. Unfortunately nothing is drawn. I read this article. They are using a ListenableDirectedGraph so I tried a ListenableUndirectedGraph with no success. public class DisplayGraphForm extends javax.swing.JFrame { public DisplayGraphForm(SimpleWeightedGraph g) { initComponents(); // graphPanel added to JFrame with BorderLayout (Center) JGraphModelAdapter adapter = new JGraphModelAdapter(g); JGraph jgraph = new JGraph

JGraphT - apply BFS to WeightedGraph

由 二次信任 提交于 2019-12-11 08:28:54
问题 I have written the code finding the optimal path for a Weighted Graph: SimpleDirectedWeightedGraph<String, DefaultWeightedEdge> graph = new SimpleDirectedWeightedGraph<String, DefaultWeightedEdge>(DefaultWeightedEdge.class); graph.addVertex("1"); graph.addVertex("2"); graph.addVertex("3"); graph.addVertex("4"); graph.addVertex("5"); DefaultWeightedEdge e1 = graph.addEdge("1", "2"); graph.setEdgeWeight(e1, 5); DefaultWeightedEdge e2 = graph.addEdge("2", "3"); graph.setEdgeWeight(e2, 10);

Jgraph: General Traversal & Forest Traversal

由 我的未来我决定 提交于 2019-12-11 06:02:23
问题 Good morning/afternoon/evening. So our data structures course gave us an assignment to segment a grayscale image in java using the following algorithm: Input: A gray-scale image with P pixels and number R Output: An image segmented into R regions 1. Map the image onto a primal weighted graph. 2. Find an MST of the graph. 3. Cut the MST at the R – 1 most costly edges. 4. Assign the average tree vertex weight to each vertex in each tree in the forest 5. Map the partition onto a segmentation

com.android.jack.ir.ast.JReturnStatement at “Unknown source info”

由 北城以北 提交于 2019-12-11 05:34:36
问题 I'm trying to import a Jgrapht library in my app, but every time i try to build APK, android studio shows me: Error:Execution failed for task ':app:transformClassesWithPreJackPackagedLibrariesForDebug'. com.android.sched.scheduler.RunnerProcessException: Error during 'TypeLegalizer' runner on 'private final synthetic int org.jgrapht.alg.vertexcover.-$Lambda$25.$m$0(java.lang.Object arg0)': Unexpected error during visit: com.android.jack.ir.ast.JReturnStatement at "Unknown source info" What is

Equivalent to JGraph for JavaFX8?

由 独自空忆成欢 提交于 2019-12-07 20:41:48
问题 I want to port an old swing tool which uses an also old version of JGraph to JavaFX8. However, since JGraph is a Swing-Based library, is thought about replacing it, too. So, is there something equivalent to JGraph, but working with JavaFX8? 回答1: So, is there something equivalent to JGraph, but working with JavaFX8? Following Jonathan Giles Blog, I can't remember having read anything about a JavaFX based graph library yet -> so, most likely, no But you should be able to use Swing controls in

Equivalent to JGraph for JavaFX8?

由 时光毁灭记忆、已成空白 提交于 2019-12-06 10:19:10
I want to port an old swing tool which uses an also old version of JGraph to JavaFX8. However, since JGraph is a Swing-Based library, is thought about replacing it, too. So, is there something equivalent to JGraph, but working with JavaFX8? So, is there something equivalent to JGraph, but working with JavaFX8? Following Jonathan Giles Blog , I can't remember having read anything about a JavaFX based graph library yet -> so, most likely, no But you should be able to use Swing controls in JavaFX: https://docs.oracle.com/javase/8/javafx/api/javafx/embed/swing/SwingNode.html 来源： https:/

JGraph in a JFrame

由 空扰寡人 提交于 2019-12-06 04:48:37
I want to draw some graphs including vertices and edges in my application. I found that JGraph is a good library for plotting graphs. I went through some online sources about it but couldn't find any relevant articles about how to embed a JGraph in a Swing application. (Showing a JGraph in a JFrame etc). Can Any one help me with that? This code worked for me: // Insert the cells via the cache, so they get selected graph.getGraphLayoutCache().insert(cells); // Show in Frame JFrame frame = new JFrame(); frame.getContentPane().add(new JScrollPane(graph)); frame.setDefaultCloseOperation(JFrame
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