Java tutorial
/* Copyright 2008-2011 Gephi Authors : Patick J. McSweeney <pjmcswee@syr.edu>, Sebastien Heymann <seb@gephi.org> Website : http://www.gephi.org This file is part of Gephi. DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. Copyright 2011 Gephi Consortium. All rights reserved. The contents of this file are subject to the terms of either the GNU General Public License Version 3 only ("GPL") or the Common Development and Distribution License("CDDL") (collectively, the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the License at http://gephi.org/about/legal/license-notice/ or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the specific language governing permissions and limitations under the License. When distributing the software, include this License Header Notice in each file and include the License files at /cddl-1.0.txt and /gpl-3.0.txt. 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Contributor(s): Portions Copyrighted 2011 Gephi Consortium. */ package org.gephi.statistics.plugin; import java.text.DecimalFormat; import java.text.NumberFormat; import java.util.HashMap; import java.util.Map; import org.gephi.data.attributes.api.AttributeTable; import org.gephi.data.attributes.api.AttributeColumn; import org.gephi.data.attributes.api.AttributeModel; import org.gephi.data.attributes.api.AttributeOrigin; import org.gephi.data.attributes.api.AttributeRow; import org.gephi.data.attributes.api.AttributeType; import org.gephi.graph.api.DirectedGraph; import org.gephi.graph.api.GraphModel; import org.gephi.graph.api.HierarchicalDirectedGraph; import org.gephi.graph.api.HierarchicalGraph; import org.gephi.graph.api.Node; import org.gephi.statistics.spi.Statistics; import org.gephi.utils.longtask.spi.LongTask; import org.gephi.utils.progress.Progress; import org.gephi.utils.progress.ProgressTicket; import org.jfree.chart.ChartFactory; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.openide.util.NbBundle; public class Degree implements Statistics, LongTask { public static final String INDEGREE = "indegree"; public static final String OUTDEGREE = "outdegree"; public static final String DEGREE = "degree"; public static final String AVERAGE_DEGREE = "avgdegree"; private boolean isDirected; // only set inside this class /** Remembers if the Cancel function has been called. */ private boolean isCanceled; /** Keep track of the work done. */ private ProgressTicket progress; /** */ private double avgDegree; private Map<Integer, Integer> inDegreeDist; private Map<Integer, Integer> outDegreeDist; private Map<Integer, Integer> degreeDist; /** * * @return */ public double getAverageDegree() { return avgDegree; } /** * * @param graphModel */ public void execute(GraphModel graphModel, AttributeModel attributeModel) { HierarchicalGraph graph = graphModel.getHierarchicalGraphVisible(); execute(graph, attributeModel); } public void execute(HierarchicalGraph graph, AttributeModel attributeModel) { isDirected = graph instanceof DirectedGraph; isCanceled = false; inDegreeDist = new HashMap<Integer, Integer>(); outDegreeDist = new HashMap<Integer, Integer>(); degreeDist = new HashMap<Integer, Integer>(); //Attributes cols AttributeTable nodeTable = attributeModel.getNodeTable(); AttributeTable graphTable = attributeModel.getGraphTable(); AttributeColumn inCol = nodeTable.getColumn(INDEGREE); AttributeColumn outCol = nodeTable.getColumn(OUTDEGREE); AttributeColumn degCol = nodeTable.getColumn(DEGREE); AttributeColumn avgDegreeCol = graphTable.getColumn(AVERAGE_DEGREE); if (isDirected) { if (inCol == null) { inCol = nodeTable.addColumn(INDEGREE, NbBundle.getMessage(Degree.class, "Degree.nodecolumn.InDegree"), AttributeType.INT, AttributeOrigin.COMPUTED, 0); } if (outCol == null) { outCol = nodeTable.addColumn(OUTDEGREE, NbBundle.getMessage(Degree.class, "Degree.nodecolumn.OutDegree"), AttributeType.INT, AttributeOrigin.COMPUTED, 0); } } if (degCol == null) { degCol = nodeTable.addColumn(DEGREE, NbBundle.getMessage(Degree.class, "Degree.nodecolumn.Degree"), AttributeType.INT, AttributeOrigin.COMPUTED, 0); } if (avgDegreeCol == null) { avgDegreeCol = graphTable.addColumn(AVERAGE_DEGREE, NbBundle.getMessage(Degree.class, "Degree.graphcolumn.AverageDegree"), AttributeType.DOUBLE, AttributeOrigin.COMPUTED, 0.0); } int i = 0; graph.readLock(); Progress.start(progress, graph.getNodeCount()); HierarchicalDirectedGraph directedGraph = null; if (isDirected) { directedGraph = graph.getGraphModel().getHierarchicalDirectedGraphVisible(); } for (Node n : graph.getNodes()) { AttributeRow row = (AttributeRow) n.getNodeData().getAttributes(); if (isDirected) { int inDegree = directedGraph.getTotalInDegree(n); int outDegree = directedGraph.getTotalOutDegree(n); row.setValue(inCol, inDegree); row.setValue(outCol, outDegree); if (!inDegreeDist.containsKey(inDegree)) { inDegreeDist.put(inDegree, 0); } inDegreeDist.put(inDegree, inDegreeDist.get(inDegree) + 1); if (!outDegreeDist.containsKey(outDegree)) { outDegreeDist.put(outDegree, 0); } outDegreeDist.put(outDegree, outDegreeDist.get(outDegree) + 1); } int degree = graph.getTotalDegree(n); row.setValue(degCol, degree); avgDegree += degree; if (!degreeDist.containsKey(degree)) { degreeDist.put(degree, 0); } degreeDist.put(degree, degreeDist.get(degree) + 1); if (isCanceled) { break; } i++; Progress.progress(progress, i); } avgDegree /= graph.getNodeCount(); graph.getAttributes().setValue(avgDegreeCol.getIndex(), avgDegree); graph.readUnlockAll(); } /** * * @return */ public String getReport() { String report = ""; if (isDirected) { report = getDirectedReport(); } else { //Distribution series XYSeries dSeries = ChartUtils.createXYSeries(degreeDist, "Degree Distribution"); XYSeriesCollection dataset1 = new XYSeriesCollection(); dataset1.addSeries(dSeries); JFreeChart chart1 = ChartFactory.createXYLineChart("Degree Distribution", "Value", "Count", dataset1, PlotOrientation.VERTICAL, true, false, false); chart1.removeLegend(); ChartUtils.decorateChart(chart1); ChartUtils.scaleChart(chart1, dSeries, false); String degreeImageFile = ChartUtils.renderChart(chart1, "degree-distribution.png"); NumberFormat f = new DecimalFormat("#0.000"); report = "<HTML> <BODY> <h1>Degree Report </h1> " + "<hr>" + "<br> <h2> Results: </h2>" + "Average Degree: " + f.format(avgDegree) + "<br /><br />" + degreeImageFile + "</BODY></HTML>"; } return report; } public String getDirectedReport() { //Distribution series XYSeries dSeries = ChartUtils.createXYSeries(degreeDist, "Degree Distribution"); XYSeries idSeries = ChartUtils.createXYSeries(inDegreeDist, "In-Degree Distribution"); XYSeries odSeries = ChartUtils.createXYSeries(outDegreeDist, "Out-Degree Distribution"); XYSeriesCollection dataset1 = new XYSeriesCollection(); dataset1.addSeries(dSeries); XYSeriesCollection dataset2 = new XYSeriesCollection(); dataset2.addSeries(idSeries); XYSeriesCollection dataset3 = new XYSeriesCollection(); dataset3.addSeries(odSeries); JFreeChart chart1 = ChartFactory.createXYLineChart("Degree Distribution", "Value", "Count", dataset1, PlotOrientation.VERTICAL, true, false, false); chart1.removeLegend(); ChartUtils.decorateChart(chart1); ChartUtils.scaleChart(chart1, dSeries, false); String degreeImageFile = ChartUtils.renderChart(chart1, "degree-distribution.png"); JFreeChart chart2 = ChartFactory.createXYLineChart("In-Degree Distribution", "Value", "Count", dataset2, PlotOrientation.VERTICAL, true, false, false); chart2.removeLegend(); ChartUtils.decorateChart(chart2); ChartUtils.scaleChart(chart2, dSeries, false); String indegreeImageFile = ChartUtils.renderChart(chart2, "indegree-distribution.png"); JFreeChart chart3 = ChartFactory.createXYLineChart("Out-Degree Distribution", "Value", "Count", dataset3, PlotOrientation.VERTICAL, true, false, false); chart3.removeLegend(); ChartUtils.decorateChart(chart3); ChartUtils.scaleChart(chart3, dSeries, false); String outdegreeImageFile = ChartUtils.renderChart(chart3, "outdegree-distribution.png"); NumberFormat f = new DecimalFormat("#0.000"); String report = "<HTML> <BODY> <h1>Degree Report </h1> " + "<hr>" + "<br> <h2> Results: </h2>" + "Average Degree: " + f.format(avgDegree) + "<br /><br />" + degreeImageFile + "<br /><br />" + indegreeImageFile + "<br /><br />" + outdegreeImageFile + "</BODY></HTML>"; return report; } /** * * @return */ public boolean cancel() { this.isCanceled = true; return true; } /** * * @param progressTicket */ public void setProgressTicket(ProgressTicket progressTicket) { this.progress = progressTicket; } }