gephi生成图（java版）

 
 
  
  
  
  

   
   
   
   
  
  
 
  
 
  
  
  
  
不说啥了，直接代码  ，对于图的生成，推荐使用组合算法，yifan hu 算法点生成图是百万级的

 
 
 
 

 

 
 
  
  
  
  
/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <[email protected]>
Website : http://www.gephi.org

This file is part of Gephi.

Gephi is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

Gephi is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with Gephi.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.gephi.toolkit.demos;

import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;

import org.gephi.graph.api.DirectedGraph;
import org.gephi.graph.api.GraphController;
import org.gephi.graph.api.GraphModel;
import org.gephi.io.exporter.api.ExportController;
import org.gephi.io.importer.api.Container;
import org.gephi.io.importer.api.EdgeDefault;
import org.gephi.io.importer.api.ImportController;
import org.gephi.io.processor.plugin.DefaultProcessor;
import org.gephi.layout.plugin.AutoLayout;
import org.gephi.layout.plugin.force.StepDisplacement;
import org.gephi.layout.plugin.force.yifanHu.YifanHuLayout;
import org.gephi.layout.plugin.forceAtlas.ForceAtlasLayout;
import org.gephi.project.api.ProjectController;
import org.gephi.project.api.Workspace;
import org.openide.util.Lookup;

/**
 * This demo shows how to use the <code>AutoLayout</code> class to run layout
 * programmatically.
 * <p>
 * You can set a layout duration, and an execution ratio for several layout. For
 * instance you set 0.8 for a Yifan Hu algorithm and 0.2 for Label Adjust. If
 * execution time is 100 seconds, the first algorithm run for 80 seconds and the
 * second for 20 seconds. It also allows to change property values dynamically
 * (at a certain ratio or interpolated if values are numerical).
 *
 * @author Mathieu Bastian
 */
public class WithAutoLayout {

    public void script() {
        //Init a project - and therefore a workspace
    	//��ʼ��һ����Ŀ - ��һ��������
        ProjectController pc = Lookup.getDefault().lookup(ProjectController.class);
        pc.newProject();
        Workspace workspace = pc.getCurrentWorkspace();

        //Append container to graph structure
        //��������ͼ�νṹ
        ImportController importController = Lookup.getDefault().lookup(ImportController.class);
        //Import file
        //�����ļ�
        Container container;
        try {
            File file = new File(getClass().getResource("/org/gephi/toolkit/demos/resources/lesmiserables3582908092477373.gml").toURI());
            container = importController.importFile(file);
            container.getLoader().setEdgeDefault(EdgeDefault.DIRECTED);   //Force DIRECTED
            container.setAllowAutoNode(false);  //Don't create missing nodes
        } catch (Exception ex) {
            ex.printStackTrace();
            return;
        }
        importController.process(container, new DefaultProcessor(), workspace);

        //See if graph is well imported
        //���ͼ���
        GraphModel graphModel = Lookup.getDefault().lookup(GraphController.class).getModel();
        DirectedGraph graph = graphModel.getDirectedGraph();
        for (int i = 1;i <= graph.getNodeCount();i++) {
//			System.out.println("Nodes: " + graph.getNode(i).getNodeData());
		}
        System.out.println("Edges: " + graph.getEdgeCount());
        
        //Layout for 1 minute
        //����1����
        
        
        //^^
        long time = 0;
		if (graph.getEdgeCount() > 20000) {
			time = (long) (((double) graph.getEdgeCount() / 80));
//			System.out.println("log:huangzheng:"+DateUtil.time2str((int)System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss")+"当前生成图像所花费的时间："+time);
		}else
		if (graph.getEdgeCount() > 12000) {
			time = (long) (((double) graph.getEdgeCount() / 85));
//			System.out.println("log:huangzheng:"+DateUtil.time2str((int)System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss")+"当前生成图像所花费的时间："+time);
		} else if (graph.getEdgeCount() > 8000) {
			time = (long) (((double) graph.getEdgeCount() / 90));
//			System.out.println("log:huangzheng:"+DateUtil.time2str((int)System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss")+"当前生成图像所花费的时间："+time);
		} else if (graph.getEdgeCount() > 5000) {
			time = (long) (((double) graph.getEdgeCount() / 95));
//			System.out.println("log:huangzheng:"+DateUtil.time2str((int)System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss")+"当前生成图像所花费的时间："+time);
		} else if (graph.getEdgeCount() > 100) {
			time = (long) (((double) graph.getEdgeCount() / 100));
//			System.out.println("log:huangzheng:"+DateUtil.time2str((int)System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss")+"当前生成图像所花费的时间："+time);
		} else {
			time = 1;
		}
        AutoLayout autoLayout = new AutoLayout(time, TimeUnit.SECONDS);
        autoLayout.setGraphModel(graphModel);
        YifanHuLayout secondLayout  = new YifanHuLayout(null, new StepDisplacement(1f));
        ForceAtlasLayout firstLayout = new ForceAtlasLayout(null);
        AutoLayout.DynamicProperty adjustBySizeProperty = AutoLayout.createDynamicProperty("forceAtlas.adjustSizes.name", Boolean.TRUE, 0.1f);//True after 10% of layout time
        AutoLayout.DynamicProperty repulsionProperty = AutoLayout.createDynamicProperty("forceAtlas.repulsionStrength.name", new Double(500.), 0f);//500 for the complete period
        autoLayout.addLayout(firstLayout , 0.5f, new AutoLayout.DynamicProperty[]{adjustBySizeProperty, repulsionProperty});
        autoLayout.addLayout(secondLayout, 0.5f);

       
		
        
        autoLayout.execute();
         //^^
        
        
        
        //Export
        ExportController ec = Lookup.getDefault().lookup(ExportController.class);
        try {
            ec.exportFile(new File("WebRoot/WEB-INF/weiboGexf/io_gexf2.gexf"));
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
    
    public static void main(String[] args) {
    	WithAutoLayout autoLayout = new WithAutoLayout();
        autoLayout.script();
//    	System.out.println();
	}
}