Java tutorial
/* * This file is part of Biblioteca-Digital de Univalle. * * Biblioteca-Digital de Univalle 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 3 of the License, or * (at your option) any later version. * * Biblioteca-Digital de Univalle 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 General Public License for more details. * You should have received a copy of the GNU General Public License * along with Biblioteca-Digital de Univalle. If not, see <http://www.gnu.org/licenses/>. * */ package biblioteca.reportes; import java.util.ArrayList; import org.jfree.chart.ChartFactory; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.data.general.DefaultPieDataset; /** * Esta clase provee una interfaz entre los resultados de las consultas de la base * de datos para los reportes y estadisticas, y el modulo de creacin de graficos, * JFreeChart, para el manejo de graficos en los reportes * * @author Alejandro Valds Villada * @author Mara Cristina Bustos Rodrguez */ public class ChartCreator { public static DefaultPieDataset asignarPieDataset(ArrayList<String> Valores) { DefaultPieDataset dataSet = new DefaultPieDataset(); int size = Valores.size(); size = (size <= 32) ? size : 32; for (int i = 2; i < size; i += 2) { dataSet.setValue(Valores.get(i), Double.parseDouble(Valores.get(i + 1))); } return dataSet; } public static DefaultCategoryDataset asignarBarDataset(ArrayList<String> Valores) { DefaultCategoryDataset dataSet = new DefaultCategoryDataset(); int size = Valores.size(); size = (size <= 32) ? size : 32; for (int i = 2; i < size; i += 2) { dataSet.setValue(Double.parseDouble(Valores.get(i + 1)), "Grafica", Valores.get(i)); } return dataSet; } /*public static DefaultPieDataset DataPieSetConIndices(ArrayList<String> Valores){ DefaultPieDataset dataSet = new DefaultPieDataset(); int size=(Valores.size()<=32)? Valores.size() : 32; for(int i=2;i<size;i+=2){ System.out.println(Valores.get(i)+" "+Valores.get(i+1)); dataSet.setValue((i+1)+"", Double.parseDouble(Valores.get(i+1))); } return dataSet; } public static DefaultCategoryDataset DataBarSetConIndices(ArrayList<String> Valores){ DefaultCategoryDataset dataSet = new DefaultCategoryDataset(); for(int i=2;i<Valores.size();i+=2){ System.out.println(Valores.get(i)+" "+Valores.get(i+1)); dataSet.setValue(Double.parseDouble(Valores.get(i+1)),"Grafica",(i+1)+""); } return dataSet; }*/ public static JFreeChart generatePieChart(DefaultPieDataset dataSet, String titulo) { JFreeChart chart = ChartFactory.createPieChart(titulo, dataSet, true, true, false); /* ChartFrame frame = new ChartFrame("First", chart); frame.pack(); frame.setVisible(true);*/ return chart; } public static JFreeChart generateBarChart(DefaultCategoryDataset dataSet, String Titulo, String tituloX, String tituloY) { JFreeChart chart = ChartFactory.createBarChart(Titulo, tituloX, tituloY, dataSet, PlotOrientation.VERTICAL, false, true, false); return chart; } }