Java tutorial
/* *********************************************************************** * * project: org.matsim.* * DgDeltaScoreIncomeChart * * * *********************************************************************** * * * * copyright : (C) 2009 by the members listed in the COPYING, * * LICENSE and WARRANTY file. * * email : info at matsim dot org * * * * *********************************************************************** * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * See also COPYING, LICENSE and WARRANTY file * * * * *********************************************************************** */ package playground.dgrether.analysis.charts; import org.jfree.chart.ChartColor; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.CategoryLabelPositions; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.renderer.category.BarRenderer; import org.jfree.data.category.DefaultCategoryDataset; import playground.dgrether.analysis.charts.utils.DgColorScheme; import playground.dgrether.analysis.population.DgAnalysisPopulation; import playground.dgrether.analysis.population.DgIncomeClass; import playground.dgrether.analysis.population.DgPersonData; public class DgModalSplitGroupChart { private DgAnalysisPopulation ana; private int numberOfClasses = 10; private int groupThreshold = 0; private DefaultCategoryDataset dataset; private String xLabel = "Income [CHF / Year] up to..."; private String yLabel = "% of Travellers"; private String runId; private DgAxisBuilder axisBuilder = new DgDefaultAxisBuilder(); public DgModalSplitGroupChart(DgAnalysisPopulation ana, String runid, int threshold) { this.ana = ana; this.runId = runid; this.groupThreshold = threshold; this.ana.calculateMinMaxIncome(); this.dataset = new DefaultCategoryDataset(); this.calculateData(); } private void calculateData() { // calculate thresholds for income classes DgIncomeClass[] incomeThresholds = new DgIncomeClass[this.numberOfClasses]; DgAnalysisPopulation[] groups = new DgAnalysisPopulation[this.numberOfClasses]; double deltaY = this.ana.getMaxIncome() / (this.numberOfClasses - 1); for (int i = 0; i < incomeThresholds.length; i++) { incomeThresholds[i] = new DgIncomeClass((i * deltaY), ((i + 1) * deltaY)); groups[i] = new DgAnalysisPopulation(); } for (DgPersonData d : ana.getPersonData().values()) { double y = d.getIncome().getIncome(); int pos = (int) (y / deltaY); DgIncomeClass c = incomeThresholds[pos]; if (!(c.getMin() <= y) && (y <= c.getMax())) { throw new IllegalStateException(); } groups[pos].getPersonData().put(d.getPersonId(), d); } String[] groupDescriptions = new String[groups.length]; double[] xvalues = new double[groups.length]; double[] carvalues = new double[groups.length]; double[] ptvalues = new double[groups.length]; double groupSize = 0.0; double carPlans = 0.0; for (int i = 0; i < groups.length; i++) { // groupDescriptions[i] = incomeThresholds[i].getTitle(); String title = Double.toString(incomeThresholds[i].getMax()); title = title.substring(0, (title.indexOf(".") /*+ 3*/)); groupDescriptions[i] = title; xvalues[i] = i; groupSize = groups[i].getPersonData().size(); if (groupSize < this.groupThreshold) { continue; } carPlans = groups[i].calculateNumberOfCarPlans(runId); carvalues[i] = carPlans / groupSize * 100.0; ptvalues[i] = (groupSize - carPlans) / groupSize * 100.0; this.dataset.addValue(carvalues[i], "car", groupDescriptions[i]); this.dataset.addValue(ptvalues[i], "non-car", groupDescriptions[i]); } } public JFreeChart createChart() { CategoryAxis categoryAxis = this.axisBuilder.createCategoryAxis(xLabel); categoryAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45); ValueAxis valueAxis = this.axisBuilder.createValueAxis(yLabel); valueAxis.setRange(0.0, 100.0); DgColorScheme colorScheme = new DgColorScheme(); CategoryPlot plot = new CategoryPlot(); plot.setDomainAxis(categoryAxis); plot.setRangeAxis(valueAxis); plot.setDataset(0, this.dataset); BarRenderer carRenderer = new BarRenderer(); carRenderer.setSeriesPaint(0, colorScheme.COLOR1A); carRenderer.setSeriesPaint(1, colorScheme.COLOR3A); carRenderer.setItemMargin(0.10); plot.setRenderer(0, carRenderer); JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, true); chart.setBackgroundPaint(ChartColor.WHITE); chart.getLegend().setItemFont(this.axisBuilder.getAxisFont()); return chart; } public int getNumberOfClasses() { return numberOfClasses; } public void setNumberOfClasses(int numberOfClasses) { this.numberOfClasses = numberOfClasses; } }