Examples of org.gephi.graph.api.Graph

org.gephi.graph.api.Graph
Main interface for accessing the graph structure and develop algorithms.
A graph object belongs to a graph model, which really contains the data. Graph objects are therefore only accessors, with all convinient methods to read and modify the structure. Hence, multiple Graph objects can exists.
Get current graph
```
 GraphController graphController = Lookup.getDefault().lookup(GraphController.class); GraphModel model = graphController.getModel(); Graph graph = model.getGraph(); 
```
Note: This shows how to get the complete graph, for getting only the currently visualized graph, call model.getGraphVisible() instead.
Graph Locking
Graph structure possess a locking mechanism that avoids multiple threads to modify the structure concurrently. However, several readers are allowed.
There is two different way to perform read locking:
- Manually by calling readLock() and readUnlock()
- Structure is automatically locked when you read the various NodeIterable and EdgeIterable
Be always sure you don't leave the structure blocked. use readUnlockAll() to release all the locks.
Note: Write locking is automatically done when modifying th graph (add, remove, ...). @author Mathieu Bastian

        return isDirected;
    }


    @Override
    public void execute(GraphModel graphModel, AttributeModel attributeModel) {
        Graph graph;
        if (isDirected) {
            graph = graphModel.getDirectedGraphVisible();
        } else {
            graph = graphModel.getUndirectedGraphVisible();
        }

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    @Override
    public void execute(GraphModel graphModel, AttributeModel attributeModel) {
        isDirected = graphModel.isDirected();
        isCanceled = false;


        Graph graph;
        if (isDirected) {
            graph = graphModel.getDirectedGraphVisible();
        } else {
            graph = graphModel.getUndirectedGraphVisible();
        }

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        return report;
    }


    @Override
    public void loop(GraphView window, Interval interval) {
        Graph graph = null;
        if (isDirected) {
            graph = graphModel.getDirectedGraph(window);
        } else {
            graph = graphModel.getUndirectedGraph(window);
        }


        graph.readLock();


        clusteringCoefficientStat = new ClusteringCoefficient();
        clusteringCoefficientStat.setDirected(isDirected);
        clusteringCoefficientStat.triangles(graph);


        //Columns
        if (!averageOnly) {
            double[] coefficients = clusteringCoefficientStat.getCoefficientReuslts();
            int i = 0;
            for (Node n : graph.getNodes()) {
                double coef = coefficients[i++];
                
                n.setAttribute(dynamicCoefficientColumn, coef, interval.getLow());
                n.setAttribute(dynamicCoefficientColumn, coef, interval.getHigh());
                
                if (cancel) {
                    break;
                }
            }
        }


        graph.readUnlockAll();


        //Average
        double avg = clusteringCoefficientStat.getAverageClusteringCoefficient();
        graph.setAttribute(DYNAMIC_AVG_CLUSTERING_COEFFICIENT, avg, interval.getLow());
        graph.setAttribute(DYNAMIC_AVG_CLUSTERING_COEFFICIENT, avg, interval.getHigh());


        averages.put(interval.getLow(), avg);
        averages.put(interval.getHigh(), avg);
    }

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        return report;
    }


    @Override
    public void loop(GraphView window, Interval interval) {
        Graph graph = graphModel.getGraph(window);


        int count = graph.getNodeCount();


        graph.setAttribute(NB_NODES, count, interval.getLow());
        graph.setAttribute(NB_NODES, count, interval.getHigh());


        counts.put(interval.getLow(), count);
        counts.put(interval.getHigh(), count);
    }

View Full Code Here

        }
    }


    @Override
    public void execute(GraphModel graphModel, AttributeModel attributeModel) {
        Graph hgraph = graphModel.getUndirectedGraphVisible();
        execute(hgraph, attributeModel);
    }

View Full Code Here

        getGraph().addNode(newNode);
        return newNode;
    }


    public Node createNode(String label, String id) {
        Graph graph = getGraph();
        if (graph.getNode(id) == null) {
            Node newNode = buildNode(label, id);
            graph.addNode(newNode);
            return newNode;
        } else {
            return null;
        }
    }

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    public void deleteNode(Node node) {
        removeNode(node, getGraph());
    }


    public void deleteNodes(Node[] nodes) {
        Graph graph = getGraph();
        for (Node node : nodes) {
            removeNode(node, graph);
        }
    }

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    public void deleteEdge(Edge edge) {
        removeEdge(edge, getGraph());
    }


    public void deleteEdges(Edge[] edges) {
        Graph graph = getGraph();
        for (Edge edge : edges) {
            removeEdge(edge, graph);
        }
    }

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    public Edge[] getNodeEdges(Node node) {
        return getGraph().getEdges(node).toArray();
    }


    public int getNodesCount() {
        Graph graph = getGraph();
        graph.readLock();
        int nodesCount = graph.getNodeCount();
        graph.readUnlock();
        return nodesCount;
    }

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        graph.readUnlock();
        return nodesCount;
    }


    public int getEdgesCount() {
        Graph graph = getGraph();
        graph.readLock();
        int edgesCount = graph.getEdgeCount();
        graph.readUnlock();
        return edgesCount;
    }

View Full Code Here

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Examples of org.gephi.graph.api.Graph

Get current graph

Graph Locking

Related Classes of org.gephi.graph.api.Graph