Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package Data; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; /** * * @author frascog */ public class PoliticalGraph { private JFreeChart barChart; public PoliticalGraph() { this.barChart = this.makeGraph(); } public ChartPanel getGraph() { this.barChart = makeGraph(); ChartPanel chartPanel = new ChartPanel(this.barChart); return chartPanel; } private JFreeChart makeGraph() { return ChartFactory.createBarChart("Tweets", "Partisan", "Percent", createDataset(), PlotOrientation.VERTICAL, false, false, false); } private CategoryDataset createDataset() { final String pos = "Democrat"; final String neg = "Republicain"; final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); int republicain = 0; int democrat = 0; Classifier classifier = Classifier.getInstance(); Politicians politicians = classifier.getPoliticains(); for (Politicain politicain : politicians.getPoliticains()) { democrat += politicain.getNegitiveDemocrat().size(); republicain += politicain.getNegitiveRepublicain().size(); democrat += politicain.getPositiveDemocrat().size(); republicain += politicain.getPositiveRepublicain().size(); } double total = republicain + democrat; dataset.addValue(republicain / total, "0", neg); dataset.addValue(democrat / total, "0", pos); return dataset; } }