charts.ErrorPorcentajePie.java Source code

Introduction

Here is the source code for charts.ErrorPorcentajePie.java

Source

/*
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package charts;

import java.awt.Dimension;
import java.awt.Font;
import javax.swing.JPanel;
import javax.swing.JTable;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;

/**
 *
 * @author aguilangeles@gmail.com
 */
public class ErrorPorcentajePie extends JPanel {

    public ErrorPorcentajePie() {
    }

    public ChartPanel getChartPanel(String chartTitle, JTable table, int total) {

        PieDataset dataset = creaDataset(table, total);
        JFreeChart chart = createChart(dataset, chartTitle);
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new Dimension(450, 440));
        chartPanel.setMouseWheelEnabled(true);
        return chartPanel;

    }

    private PieDataset creaDataset(JTable table, int total) {
        DefaultPieDataset dataset = new DefaultPieDataset();
        for (int row = 0; row < table.getRowCount(); row++) {
            String name = (String) table.getValueAt(row, 0);
            int quantity = (int) table.getValueAt(row, 1);
            int porcentaje = (quantity * 100) / total;
            dataset.setValue(name, porcentaje);

        }
        return dataset;
    }

    private JFreeChart createChart(PieDataset dataset, String title) {
        JFreeChart chart = ChartFactory.createPieChart(title, dataset, true, true, false);
        PiePlot plot = (PiePlot) chart.getPlot();
        plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12));
        plot.setNoDataMessage("no data");
        plot.setCircular(false);
        plot.setLabelGap(0.02);
        return chart;
    }
}