JFreeChart的放大和缩小功能的异常行为？ [英] Abnormal Behaviour of the Zoom In and Zoom Out Functionality of the JFreeChart?
本文介绍了JFreeChart的放大和缩小功能的异常行为？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我观察到放大和缩小的功能实现与预期完全不同。例如，当我执行一步缩小时，然后再一步后退放大。我再也看不到原始图表了。
我没有看到JFreechart的放大和缩小功能处于同步状态。
public class ChartPanelDemo {
private static final String title =Historical Data Graph;
private ChartPanel chartPanel = createChart（）;
私人JButton ZoomX;
私人JButton ZoomY;
私人JButton Zoom;
私人JButton ZoomXOut;
私人JButton ZoomYOut;
私人JButton ZoomOut;
私人JButton originalGraph;
private JButton xscaleInc;
private JButton xscaleDec;
private NumberAxis domainAxis;
private NumberAxis rangeAxis;
private int UNITS = 1;
private static final int COUNT = 100;
私人JPanel面板;
private double [] [] sizeFr = {{TableLayout.FILL}，{TableLayout.FILL}};
public ChartPanelDemo（）{
JFrame f = new JFrame（title）;
panel = new JPanel（）;
f.setTitle（title）;
f.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
f.setLayout（new BorderLayout（0,5））;
f.add（chartPanel，BorderLayout.CENTER）;
chartPanel.setMouseWheelEnabled（true）;
// chartPanel.setHorizontalAxisTrace（true）;
// chartPanel.setVerticalAxisTrace（true）;
chartPanel.setZoomInFactor（0.9）;
chartPanel.setZoomOutFactor（0.9）;
JPanel panel = new JPanel（new FlowLayout（FlowLayout.RIGHT））;
panel.add（createTrace（））;
panel.add（createDate（））;
panel.add（createZoom（））;
panel.add（createZoomOutX（））;
panel.add（createZoomOutY（））;
panel.add（createZoomOut（））;
panel.add（toOriginalGraph（））;
panel.add（AutoScaleDecXaxis（））;
//panel.add（AutoScaleDecXaxis（））;
f.add（panel，BorderLayout.SOUTH）;
f.pack（）;
f.setLocationRelativeTo（null）;
f.setVisible（true）;
}
私人JSpinner AutoScaleDecXaxis（）{
final JSpinner spinner = new JSpinner（
new SpinnerNumberModel（UNITS，1，COUNT） ，1））;
spinner.addChangeListener（new ChangeListener（）{
@Override
public void stateChanged（ChangeEvent e）{
JSpinner s =（JSpinner）e.getSource（） ;
数字n =（数字）s.getValue（）;
domainAxis.setTickUnit（new NumberTickUnit（n.intValue（）））;
}
}）;
返回微调器;
}
private JButton toOriginalGraph（）{
originalGraph = new JButton（new AbstractAction（RestoreGraph）{
@Override
public void actionPerformed（ActionEvent e）{
chartPanel.restoreAutoBounds（）;
}
}）;
返回originalGraph;
}
私人JButton createZoomOut（）{
ZoomOut = new JButton（new AbstractAction（ZoomOut）{
@Override
public void actionPerformed（ActionEvent e）{
ZoomOut.setActionCommand（chartPanel.ZOOM_OUT_BOTH_COMMAND）;
ZoomOut.addActionListener（chartPanel）;
}
} ）;
返回ZoomOut;
}
私人JButton createZoomOutY（）{
ZoomYOut = new JButton（new AbstractAction（ZoomOutY）{
@Override
public void actionPerformed（ActionEvent e）{
ZoomYOut.setActionCommand（chartPanel.ZOOM_OUT_RANGE_COMMAND）;
ZoomYOut.addActionListener（chartPanel）;
}
}）;
返回ZoomYOut;
}
private JButton createZoomOutX（）{
ZoomXOut = new JButton（new AbstractAction（ZoomOutX）{
@Override
public void actionPerformed（ ActionEvent e）{
ZoomXOut.setActionCommand（chartPanel.ZOOM_OUT_DOMAIN_COMMAND）;
ZoomXOut.addActionListener（chartPanel）;
}
}）;
返回ZoomXOut;
}
private JButton createTrace（）{
ZoomX = new JButton（new AbstractAction（ZoomInX）{
@Override
public void actionPerformed（ActionEvent e）{
ZoomX.setActionCommand（chartPanel.ZOOM_IN_DOMAIN_COMMAND）;
ZoomX.addActionListener（chartPanel）;
// chartPanel.restoreAutoBounds（）;
}
}）;
返回ZoomX;
}
private JButton createDate（）{
ZoomY = new JButton（new AbstractAction（ZoomInY）{
@Override
public void actionPerformed（ActionEvent e）{
ZoomY.setActionCommand（chartPanel.ZOOM_IN_RANGE_COMMAND）;
ZoomY.addActionListener（chartPanel）;
}
}）;
返回ZoomY;
}
private JButton createZoom（）{
Zoom = new JButton（new AbstractAction（Zoom）{
@Override
public void actionPerformed（ActionEvent e）{
Zoom.setActionCommand（chartPanel.ZOOM_IN_BOTH_COMMAND）;
Zoom.addActionListener（chartPanel）;
}
}）;
返回缩放;
}
private ChartPanel createChart（）{
XYDataset roiData = createDataset（）;
JFreeChart chart = createChart（roiData）;
chart.setBackgroundPaint（new Color（0xBBBBDD））;
XYPlot plot = chart.getXYPlot（）;
XYSplineRenderer r = new XYSplineRenderer（20）;
plot.setRenderer（r）;
r.setBaseShapesVisible（true）;
rangeAxis =（NumberAxis）plot.getRangeAxis（）;
domainAxis =（NumberAxis）plot.getDomainAxis（）;
rangeAxis.setStandardTickUnits（NumberAxis.createIntegerTickUnits（））;
domainAxis.setStandardTickUnits（NumberAxis.createIntegerTickUnits（））;
返回新的ChartPanel（图表）;
}
private JFreeChart createChart（XYDataset dataset）{
JFreeChart chart = ChartFactory.createXYLineChart（Historical Data，// chart
// title
X，// x轴标签
Y，// y轴标签
数据集，//数据
PlotOrientation.VERTICAL，true，//包含图例
true，//工具提示
false // urls
）;
返回图表;
}
private XYDataset createDataset（）{
XYSeries series1 = new XYSeries（First）;
series1.add（1.0,1.0）;
series1.add（2.0,4.0）;
series1.add（3.0,3.0）;
series1.add（4.0,5.0）;
series1.add（5.0,5.0）;
series1.add（6.0,7.0）;
series1.add（7.0,7.0）;
series1.add（8.0,8.0）;
XYSeries series2 =新的XYSeries（秒）;
series2.add（1.0,5.0）;
series2.add（2.0,7.0）;
series2.add（3.0,6.0）;
series2.add（4.0,8.0）;
series2.add（5.0,4.0）;
series2.add（6.0,4.0）;
series2.add（7.0,2.0）;
series2.add（8.0,1.0）;
XYSeriesCollection dataset = new XYSeriesCollection（）;
dataset.addSeries（series1）;
dataset.addSeries（series2）;
返回数据集;
}
public static void main（String [] args）{
EventQueue.invokeLater（new Runnable（）{
@覆盖
public void run（）{
ChartPanelDemo cpd = new ChartPanelDemo（）;
}
}）;
}
}
问题2：两次点击ZoomInX
后
再次点击ZoomOutX（原始图表）两次后，
但是再次点击两次ZoomInX后，我看到图表不同，而不是这个问题中的第一张图片。
解决方案
您的示例似乎是混合了两种方法建议后，.stack.imgur.com / lvR5U.pngalt =
单击缩小X ：
后https://i.stack.imgur.com/ljnFf.pngalt =
这个完整的例子重新考虑因素使用 JToolBar 。
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.text.NumberFormat;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.time.Year;
import org.jfree.data.xy.XYDataset;
import static org.jfree.chart.ChartPanel。*;
/ ** @see https://stackoverflow.com/a/41337259/230513 * /
公共类ZoomDemo {
private static final String TITLE = 投资回报;
private final ChartPanel chartPanel = createChart（）;
public ZoomDemo（）{
JFrame f = new JFrame（TITLE）;
f.setTitle（TITLE）;
f.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
f.setLayout（new BorderLayout（0,5））;
f.add（chartPanel，BorderLayout.CENTER）;
chartPanel.setMouseWheelEnabled（true）;
JPanel panel = new JPanel（）;
JToolBar toolBar = new JToolBar（）;
toolBar.add（createButton（放大，ZOOM_IN_BOTH_COMMAND））;
toolBar.add（createButton（放大X，ZOOM_IN_DOMAIN_COMMAND））;
toolBar.add（createButton（Zoom In Y，ZOOM_IN_RANGE_COMMAND））;
toolBar.add（createButton（缩小，ZOOM_OUT_BOTH_COMMAND））;
toolBar.add（createButton（Zoom Out X，ZOOM_OUT_DOMAIN_COMMAND））;
toolBar.add（createButton（Zoom Out Y，ZOOM_OUT_RANGE_COMMAND））;
toolBar.add（createButton（Reset，ZOOM_RESET_BOTH_COMMAND））;
toolBar.add（createButton（Reset X，ZOOM_RESET_DOMAIN_COMMAND））;
toolBar.add（createButton（Reset Y，ZOOM_RESET_RANGE_COMMAND））;
panel.add（toolBar）;
f.add（panel，BorderLayout.SOUTH）;
f.pack（）;
f.setLocationRelativeTo（null）;
f.setVisible（true）;
}
private JButton createButton（String name，String command）{
final JButton b = new JButton（name）;
b.setActionCommand（command）;
b.addActionListener（chartPanel）;
返回b;
}
private ChartPanel createChart（）{
XYDataset roiData = createDataset（）;
JFreeChart chart = ChartFactory.createTimeSeriesChart（
TITLE，Date，Value，roiData，true，true，false）;
XYPlot plot = chart.getXYPlot（）;
XYLineAndShapeRenderer渲染器=
（XYLineAndShapeRenderer）plot.getRenderer（）;
renderer.setBaseShapesVisible（true）;
NumberFormat currency = NumberFormat.getCurrencyInstance（）;
currency.setMaximumFractionDigits（0）;
NumberAxis rangeAxis =（NumberAxis）plot.getRangeAxis（）;
rangeAxis.setNumberFormatOverride（currency）;
返回新的ChartPanel（图表）;
}
private XYDataset createDataset（）{
TimeSeriesCollection tsc = new TimeSeriesCollection（）;
tsc.addSeries（createSeries（Projected，200））;
tsc.addSeries（createSeries（Actual，100））;
返回tsc;
}
private TimeSeries createSeries（String name，double scale）{
TimeSeries series = new TimeSeries（name）;
for（int i = 0; i< 6; i ++）{
series.add（new year（2016 + i），Math.pow（2，i）* scale）;
}
返回系列;
}
public static void main（String [] args）{
EventQueue.invokeLater（new Runnable（）{
@Override
public void run（）{
ZoomDemo cpd = new ZoomDemo（）;
}
}）;
}
}
I have observed that the functionality of the "Zoom-In" and "Zoom-out" was implemented quite different than expected.Like for example when i do one step "Zoom-out" and then again after one step back of "Zoom-In". I couldn't see the Original graph again.
I don't see "Zoom-In" and "Zoom-out" functionality of JFreechart to be in the sync.
public class ChartPanelDemo {
private static final String title = "Historical Data Graph";
private ChartPanel chartPanel = createChart();
private JButton ZoomX;
private JButton ZoomY;
private JButton Zoom;
private JButton ZoomXOut;
private JButton ZoomYOut;
private JButton ZoomOut;
private JButton originalGraph;
private JButton xscaleInc;
private JButton xscaleDec;
private NumberAxis domainAxis;
private NumberAxis rangeAxis;
private int UNITS = 1;
private static final int COUNT = 100;
private JPanel panel;
private double[][] sizeFr = { { TableLayout.FILL }, { TableLayout.FILL } };
public ChartPanelDemo() {
JFrame f = new JFrame(title);
panel = new JPanel();
f.setTitle(title);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setLayout(new BorderLayout(0, 5));
f.add(chartPanel, BorderLayout.CENTER);
chartPanel.setMouseWheelEnabled(true);
// chartPanel.setHorizontalAxisTrace(true);
// chartPanel.setVerticalAxisTrace(true);
chartPanel.setZoomInFactor(0.9);
chartPanel.setZoomOutFactor(0.9);
JPanel panel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
panel.add(createTrace());
panel.add(createDate());
panel.add(createZoom());
panel.add(createZoomOutX());
panel.add(createZoomOutY());
panel.add(createZoomOut());
panel.add(toOriginalGraph());
panel.add(AutoScaleDecXaxis());
//panel.add(AutoScaleDecXaxis());
f.add(panel, BorderLayout.SOUTH);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
private JSpinner AutoScaleDecXaxis() {
final JSpinner spinner = new JSpinner(
new SpinnerNumberModel(UNITS, 1, COUNT, 1));
spinner.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
JSpinner s = (JSpinner) e.getSource();
Number n = (Number) s.getValue();
domainAxis.setTickUnit(new NumberTickUnit(n.intValue()));
}
});
return spinner;
}
private JButton toOriginalGraph() {
originalGraph = new JButton(new AbstractAction("RestoreGraph") {
@Override
public void actionPerformed(ActionEvent e) {
chartPanel.restoreAutoBounds();
}
});
return originalGraph;
}
private JButton createZoomOut() {
ZoomOut = new JButton(new AbstractAction("ZoomOut") {
@Override
public void actionPerformed(ActionEvent e) {
ZoomOut.setActionCommand(chartPanel.ZOOM_OUT_BOTH_COMMAND);
ZoomOut.addActionListener(chartPanel);
}
});
return ZoomOut;
}
private JButton createZoomOutY() {
ZoomYOut = new JButton(new AbstractAction("ZoomOutY") {
@Override
public void actionPerformed(ActionEvent e) {
ZoomYOut.setActionCommand(chartPanel.ZOOM_OUT_RANGE_COMMAND);
ZoomYOut.addActionListener(chartPanel);
}
});
return ZoomYOut;
}
private JButton createZoomOutX() {
ZoomXOut = new JButton(new AbstractAction("ZoomOutX") {
@Override
public void actionPerformed(ActionEvent e) {
ZoomXOut.setActionCommand(chartPanel.ZOOM_OUT_DOMAIN_COMMAND);
ZoomXOut.addActionListener(chartPanel);
}
});
return ZoomXOut;
}
private JButton createTrace() {
ZoomX = new JButton(new AbstractAction("ZoomInX") {
@Override
public void actionPerformed(ActionEvent e) {
ZoomX.setActionCommand(chartPanel.ZOOM_IN_DOMAIN_COMMAND);
ZoomX.addActionListener(chartPanel);
// chartPanel.restoreAutoBounds();
}
});
return ZoomX;
}
private JButton createDate() {
ZoomY = new JButton(new AbstractAction("ZoomInY") {
@Override
public void actionPerformed(ActionEvent e) {
ZoomY.setActionCommand(chartPanel.ZOOM_IN_RANGE_COMMAND);
ZoomY.addActionListener(chartPanel);
}
});
return ZoomY;
}
private JButton createZoom() {
Zoom = new JButton(new AbstractAction("Zoom") {
@Override
public void actionPerformed(ActionEvent e) {
Zoom.setActionCommand(chartPanel.ZOOM_IN_BOTH_COMMAND);
Zoom.addActionListener(chartPanel);
}
});
return Zoom;
}
private ChartPanel createChart() {
XYDataset roiData = createDataset();
JFreeChart chart = createChart(roiData);
chart.setBackgroundPaint(new Color(0xBBBBDD));
XYPlot plot = chart.getXYPlot();
XYSplineRenderer r = new XYSplineRenderer(20);
plot.setRenderer(r);
r.setBaseShapesVisible(true);
rangeAxis = (NumberAxis) plot.getRangeAxis();
domainAxis = (NumberAxis) plot.getDomainAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
return new ChartPanel(chart);
}
private JFreeChart createChart(XYDataset dataset) {
JFreeChart chart = ChartFactory.createXYLineChart("Historical Data", // chart
// title
"X", // x axis label
"Y", // y axis label
dataset, // data
PlotOrientation.VERTICAL, true, // include legend
true, // tooltips
false // urls
);
return chart;
}
private XYDataset createDataset() {
XYSeries series1 = new XYSeries("First");
series1.add(1.0, 1.0);
series1.add(2.0, 4.0);
series1.add(3.0, 3.0);
series1.add(4.0, 5.0);
series1.add(5.0, 5.0);
series1.add(6.0, 7.0);
series1.add(7.0, 7.0);
series1.add(8.0, 8.0);
XYSeries series2 = new XYSeries("Second");
series2.add(1.0, 5.0);
series2.add(2.0, 7.0);
series2.add(3.0, 6.0);
series2.add(4.0, 8.0);
series2.add(5.0, 4.0);
series2.add(6.0, 4.0);
series2.add(7.0, 2.0);
series2.add(8.0, 1.0);
XYSeriesCollection dataset = new XYSeriesCollection();
dataset.addSeries(series1);
dataset.addSeries(series2);
return dataset;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
ChartPanelDemo cpd = new ChartPanelDemo();
}
});
}
}
Problem2: After two clicks on ZoomInX
And again after two clicks on ZoomOutX(Which is the original graph)
But Again after two clicks on ZoomInX I see the graph a different one, not as the first image in this question which should be.
解决方案
Your example appears to be mixing the two approaches suggested here, invoking the chart panel's handler from within your own actionPerformed() implementation. While the chart panel handlers are reusable, they are not re-entrant. Instead, use the chart panel's implementation directly. The example below focuses on two buttons to zoom the domain in and out:
toolBar.add(createButton("Zoom In X", ZOOM_IN_DOMAIN_COMMAND));
toolBar.add(createButton("Zoom Out X", ZOOM_OUT_DOMAIN_COMMAND));
…
private JButton createButton(String name, String command) {
final JButton b = new JButton(name);
b.setActionCommand(command);
b.addActionListener(chartPanel);
return b;
}
After clicking Zoom In X:
After clicking Zoom Out X:
This complete example re-factors the createButton() method to exercise the available zoom handlers and illustrates using a JToolBar.
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.text.NumberFormat;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.time.Year;
import org.jfree.data.xy.XYDataset;
import static org.jfree.chart.ChartPanel.*;
/** @see https://stackoverflow.com/a/41337259/230513 */
public class ZoomDemo {
private static final String TITLE = "Return On Investment";
private final ChartPanel chartPanel = createChart();
public ZoomDemo() {
JFrame f = new JFrame(TITLE);
f.setTitle(TITLE);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setLayout(new BorderLayout(0, 5));
f.add(chartPanel, BorderLayout.CENTER);
chartPanel.setMouseWheelEnabled(true);
JPanel panel = new JPanel();
JToolBar toolBar = new JToolBar();
toolBar.add(createButton("Zoom In", ZOOM_IN_BOTH_COMMAND));
toolBar.add(createButton("Zoom In X", ZOOM_IN_DOMAIN_COMMAND));
toolBar.add(createButton("Zoom In Y", ZOOM_IN_RANGE_COMMAND));
toolBar.add(createButton("Zoom Out", ZOOM_OUT_BOTH_COMMAND));
toolBar.add(createButton("Zoom Out X", ZOOM_OUT_DOMAIN_COMMAND));
toolBar.add(createButton("Zoom Out Y", ZOOM_OUT_RANGE_COMMAND));
toolBar.add(createButton("Reset", ZOOM_RESET_BOTH_COMMAND));
toolBar.add(createButton("Reset X", ZOOM_RESET_DOMAIN_COMMAND));
toolBar.add(createButton("Reset Y", ZOOM_RESET_RANGE_COMMAND));
panel.add(toolBar);
f.add(panel, BorderLayout.SOUTH);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
private JButton createButton(String name, String command) {
final JButton b = new JButton(name);
b.setActionCommand(command);
b.addActionListener(chartPanel);
return b;
}
private ChartPanel createChart() {
XYDataset roiData = createDataset();
JFreeChart chart = ChartFactory.createTimeSeriesChart(
TITLE, "Date", "Value", roiData, true, true, false);
XYPlot plot = chart.getXYPlot();
XYLineAndShapeRenderer renderer =
(XYLineAndShapeRenderer) plot.getRenderer();
renderer.setBaseShapesVisible(true);
NumberFormat currency = NumberFormat.getCurrencyInstance();
currency.setMaximumFractionDigits(0);
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setNumberFormatOverride(currency);
return new ChartPanel(chart);
}
private XYDataset createDataset() {
TimeSeriesCollection tsc = new TimeSeriesCollection();
tsc.addSeries(createSeries("Projected", 200));
tsc.addSeries(createSeries("Actual", 100));
return tsc;
}
private TimeSeries createSeries(String name, double scale) {
TimeSeries series = new TimeSeries(name);
for (int i = 0; i < 6; i++) {
series.add(new Year(2016 + i), Math.pow(2, i) * scale);
}
return series;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
ZoomDemo cpd = new ZoomDemo();
}
});
}
}
这篇关于JFreeChart的放大和缩小功能的异常行为？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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