I'm a software developer working for a software developing firm and I precicate your product of JFreeChart very much.
However, I happened to a demand from my customers, which seems a big big trouble to me! So, I decided to turn to you for help!
Ok, My problem is as following:
When I draw a StackedBarChart according to the example of StackedBarChartDemo5.java, I found that I could NOT zoom in
along X Axis orientation by moving my mouse on the ploting panel (you call it Category Axis).
My Demand:
I would be pleased if you can give me a solution to solve the problem of zooming in along X Axis by moving the mouse!
You also could provide me a method as zooming in a rectangle area by moving the mouse!
I believe you're so kind to give me a hand as soon as possible, and I'm looking forward to your feedback!
Thank you once again!
Sincerely, yours
Veronica
Sept. 4, 2006
Code: Select all
package demo;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.SubCategoryAxis;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.GroupedStackedBarRenderer;
import org.jfree.data.KeyToGroupMap;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.ui.TextAnchor;
/**
* A simple demonstration application showing how to create a stacked bar chart
* using data from a {@link CategoryDataset}.
*/
public class StackedBarChartDemo5 extends ApplicationFrame {
/**
* Creates a new demo.
*
* @param title the frame title.
*/
public StackedBarChartDemo5(String title) {
super(title);
JPanel chartPanel = createDemoPanel();
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}
/**
* Creates a sample dataset.
*
* @return A sample dataset.
*/
private static CategoryDataset createDataset() {
DefaultCategoryDataset result = new DefaultCategoryDataset();
result.addValue(3396.0, "S1", "C1");
result.addValue(1580.0, "S2", "C1");
result.addValue(76.0, "S3", "C1");
result.addValue(10100.0, "S4", "C1");
result.addValue(3429.0, "S1", "C2");
result.addValue(1562.0, "S2", "C2");
result.addValue(61.0, "S3", "C2");
result.addValue(-10100.0, "S4", "C2");
return result;
}
/**
* Creates a sample chart.
*
* @param dataset the dataset for the chart.
*
* @return A sample chart.
*/
private static JFreeChart createChart(CategoryDataset dataset) {
JFreeChart chart = ChartFactory.createStackedBarChart(
"Stacked Bar Chart Demo 5", // chart title
"Category", // domain axis label
"Value", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // the plot orientation
true, // legend
true, // tooltips
false // urls
);
GroupedStackedBarRenderer renderer = new GroupedStackedBarRenderer();
KeyToGroupMap map = new KeyToGroupMap("G1");
map.mapKeyToGroup("S1", "G1");
map.mapKeyToGroup("S2", "G1");
map.mapKeyToGroup("S3", "G2");
map.mapKeyToGroup("S4", "G3");
renderer.setSeriesToGroupMap(map);
renderer.setItemLabelGenerator(
new StandardCategoryItemLabelGenerator());
renderer.setItemLabelsVisible(true);
renderer.setPositiveItemLabelPositionFallback(new ItemLabelPosition(
ItemLabelAnchor.OUTSIDE12, TextAnchor.BOTTOM_CENTER));
renderer.setItemMargin(0.10);
SubCategoryAxis domainAxis = new SubCategoryAxis("Category / Group");
domainAxis.setCategoryMargin(0.05);
domainAxis.addSubCategory("G1");
domainAxis.addSubCategory("G2");
domainAxis.addSubCategory("G3");
CategoryPlot plot = (CategoryPlot) chart.getPlot();
plot.setDomainAxis(domainAxis);
plot.setRenderer(renderer);
return chart;
}
/**
* Creates a panel for the demo (used by SuperDemo.java).
*
* @return A panel.
*/
public static JPanel createDemoPanel() {
JFreeChart chart = createChart(createDataset());
return new ChartPanel(chart);
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
StackedBarChartDemo5 demo = new StackedBarChartDemo5("Stacked Bar Chart Demo 5");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
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