Per prima cosa si deve creare un progetto come New Java Application e poi si devono linkare le librerie jcommon e jfreechart (le altre librerie comprese nel file zip si possono omettere)
In seguito si deve editare la funzione main come segue
Barre
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package barre;
import java.awt.Color;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
/**
*
* @author l.innocenti
*/
public class Barre {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.setValue(2, "classe1", "1");
dataset.setValue(7, "classe1", "2");
dataset.setValue(4, "classe1", "3");
dataset.setValue(9, "classe1", "4");
dataset.setValue(6, "classe1", "5");
JFreeChart chart;
chart = ChartFactory.createBarChart
("Grafico a barre","Classe", "Valore", dataset,
PlotOrientation.VERTICAL, false,true, false);
//chart.setBackgroundPaint(Color.yellow);
//chart.getTitle().setPaint(Color.blue);
CategoryPlot p = chart.getCategoryPlot();
p.setRangeGridlinePaint(Color.red);
ChartFrame frame1=new ChartFrame("Bar Chart",chart);
frame1.pack();
frame1.setVisible(true);
// frame1.setSize(400,350);
}
}
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Linee
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package javaapplication7;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
/**
*
* @author l.innocenti
*/
public class JavaApplication7 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
XYSeries series = new XYSeries("XYGraph");
series.add(1, 1);
series.add(1, 2);
series.add(2, 1);
series.add(3, 9);
series.add(4, 10);
// Add the series to your data set
XYSeriesCollection dataset = new XYSeriesCollection();
dataset.addSeries(series);
// Generate the graph
JFreeChart chart;
chart = ChartFactory.createXYLineChart(
"Grafico XY", // Title
"asse X", // x-axis Label
"asse Y", // y-axis Label
dataset, // Dataset
PlotOrientation.VERTICAL, // Plot Orientation
false, // Show Legend
false, // Use tooltips
false // Configure chart to generate URLs?
);
ChartFrame frame = new ChartFrame("Esempio", chart);
frame.pack();
frame.setVisible(true);
}
}
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