带有突出显示点的JFreeChart [英] JFreeChart with highlighted points
问题描述
我正在使用 JFreeChart 来绘制图表。代码是
I am using JFreeChart to draw a graph. The code is
package com.daya;
import java.awt.Color;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class Two extends ApplicationFrame {
public Two(final String title) {
super(title);
final XYDataset dataset = createDataset();
final JFreeChart chart = createChart(dataset);
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(1200, 1100));
setContentPane(chartPanel);
}
private XYDataset createDataset() {
final XYSeries series1 = new XYSeries("SLMM");
final XYSeries series2 = new XYSeries("FSPM");
XYSeries series = new XYSeries("Power Comparision");
final XYSeriesCollection dataset = new XYSeriesCollection();
try {
FileInputStream fstream = new FileInputStream("d:\\devs\\Result.txt");
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
StringBuffer buffer = new StringBuffer();
while ((strLine = br.readLine()) != null) {
buffer.append(strLine);
}
String message = buffer.toString();
message = message.replaceAll(" ", "");
String[] splitMessage = message.split("&&&");
for (int i = 0; i < splitMessage.length; i++) {
double x = 0.0, y = 0.0;
String algType = "direct";
String[] insideSplit = splitMessage[i].split("\\|\\|");
if (insideSplit[0].equalsIgnoreCase("isStraightAlg:false")) {
algType = "indirect";
}
for (int j = 1; j < insideSplit.length; j++) {
String[] valueSplit = insideSplit[j].split("\\:");
if (valueSplit[0].equalsIgnoreCase("Transactions")) {
x = Double.parseDouble(valueSplit[1]);
} else {
y = Double.parseDouble(valueSplit[1]);
}
//System.out.println(valueSplit[1]);
}
if (!algType.equalsIgnoreCase("direct")) {
System.out.println("X :" + x + " Y:" + y);
series1.add(x, y);
} else {
System.out.println("X :" + x + " Y:" + y);
series2.add(x, y);
}
}
dataset.addSeries(series1);
dataset.addSeries(series2);
} catch (Exception e) {
e.printStackTrace();
}
return dataset;
}
private JFreeChart createChart(final XYDataset dataset) {
final JFreeChart chart = ChartFactory.createXYLineChart(
"Power Comparison",
"Transaction",
"Energy",
dataset,
PlotOrientation.VERTICAL,
true,
true,
false);
chart.setBackgroundPaint(Color.white);
final XYPlot plot1 = chart.getXYPlot();
plot1.setBackgroundPaint(Color.lightGray);
plot1.setDomainGridlinePaint(Color.white);
plot1.setRangeGridlinePaint(Color.white);
final XYPlot plot2 = chart.getXYPlot();
plot2.setBackgroundPaint(Color.lightGray);
plot2.setDomainGridlinePaint(Color.white);
plot2.setRangeGridlinePaint(Color.white);
return chart;
}
public static void main(final String[] args) {
final Two demo = new Two("Multi Line Chart");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
，文本文件为：
isStraightAlg：false ||交易：500 ||能源：74267&&& isStraightAlg：true ||交易：500 ||能源：55984&&& isStraightAlg：false ||交易次数：1000 ||能源：169735&&& isStraightAlg：true ||交易次数：1000 ||能源：162520&&& isStraightAlg：false ||交易：1500 ||能源：333668&&& isStraightAlg：true ||交易：1500 ||能源：313766&&& isStraightAlg：false ||交易：2000 ||能量：494159&&& isStraightAlg：true ||交易：2000 ||能量：481627&&& isStraightAlg：false ||交易次数：2500 ||能源：594839&&& isStraightAlg：true ||交易次数：2500 ||能源：594839&&& isStraightAlg：false ||交易次数：3000 ||能源：847096&&& isStraightAlg：true ||交易次数：3000 ||能源：842402&&&
isStraightAlg : false || Transactions : 500 || Energy : 74267 &&& isStraightAlg : true || Transactions : 500 || Energy : 55984 &&& isStraightAlg : false || Transactions : 1000 || Energy : 169735 &&& isStraightAlg : true || Transactions : 1000 || Energy : 162520 &&& isStraightAlg : false || Transactions : 1500 || Energy : 333668 &&& isStraightAlg : true || Transactions : 1500 || Energy : 313766 &&& isStraightAlg : false || Transactions : 2000 || Energy : 494159 &&& isStraightAlg : true || Transactions : 2000 || Energy : 481627 &&& isStraightAlg : false || Transactions : 2500 || Energy : 594839 &&& isStraightAlg : true || Transactions : 2500 || Energy : 594839 &&& isStraightAlg : false || Transactions : 3000 || Energy : 847096 &&& isStraightAlg : true || Transactions : 3000 || Energy : 842402 &&&
使用上面的代码绘制图表。该图如下所示。如何显示绘制图形的确切点，即选择 xy 点必须以圆形显示？
With the above code the graph is drawn. The graph is shown below. How can I show the exact points for what the graph is drawn, i.e selected xy point has to present with circle?
推荐答案
ChartFactory.createXYAreaChart（）使用 XYAreaRenderer 。父 AbstractRenderer 具有更改形状可见性和外观的方法，如此处所示对于相关的 XYLineAndShapeRenderer 。
ChartFactory.createXYAreaChart() uses an XYAreaRenderer. The parent AbstractRenderer has methods to change the visibility and appearance of shapes, as shown here for the related XYLineAndShapeRenderer.
附录：您的完整示例调用 ChartFactory .createXYLineChart（），在内部使用 XYLineAndShapeRenderer 。下面的图片是将这些行添加到 createChart（）：
Addendum: Your complete example invokes ChartFactory.createXYLineChart(), which uses an XYLineAndShapeRenderer internally. The image below resulted from adding these lines to createChart():
XYLineAndShapeRenderer renderer =
(XYLineAndShapeRenderer) plot1.getRenderer();
renderer.setBaseShapesVisible(true);
这篇关于带有突出显示点的JFreeChart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！
