JFreeChart缩放Boxplots与几个类别 [英] JFreeChart scaling of Boxplots with several Categories
问题描述
我目前正在使用JFreeChart来显示盒图。基于java的项目。
i am currently working on a java-based project using JFreeChart to display boxplots.
我的问题是如何显示包含盒图的CategoryDataset约20 Category和5+ Series。
My Problem is how to display a chart containing boxplots for a CategoryDataset with about 20 Categories and 5+ Series.
目前，如果未设置ChartPanel的首选大小，图例，标签和注释是可读的，但Boxplots太小。或者ChartPanel的大小设置为Boxplots有一个可接受的大小，但图例，标签和注释水平拉伸。
Currently if the preferred size of the ChartPanel is not set, the Legend, Labels and Annotations are readable but the Boxplots are too small. Or the size of the ChartPanel is set so that the Boxplots have an acceptable size but then the legend, labels and annotations are horizontally stretched.
我的问题是，如何正确缩放箱线图而不缩放图例，轴标签和图表的注释？是否可以缩放绘图而不缩放图表的所有元素？
My question is, how to correctly scale the boxplots without scaling the legend, axis Labels and annotations of the Chart? Is it possible to scale the Plot without scaling all the elements of the Chart?
代码示例
import java.awt.Color;
import java.awt.Dimension;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.BoxAndWhiskerRenderer;
import org.jfree.data.statistics.DefaultBoxAndWhiskerCategoryDataset;
public class StretchedBoxAndWhiskerExample{
DefaultBoxAndWhiskerCategoryDataset dataset;
JFreeChart chart;
ChartPanel chartPanel;
JFrame frame;
JScrollPane scrollPane;
public StretchedBoxAndWhiskerExample() {
createCategoryBoxplot();
frame = new JFrame();
scrollPane = new JScrollPane(chartPanel);
scrollPane.setPreferredSize(new Dimension(800,700));
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
frame.add(scrollPane);
frame.pack();
frame.setVisible(true);
}
private void createCategoryBoxplot(){
dataset = createCategoryDataset();
CategoryAxis xAxis = new CategoryAxis("");
NumberAxis yAxis = new NumberAxis("Score");
BoxAndWhiskerRenderer renderer = new BoxAndWhiskerRenderer();
CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
createJFreeChart(plot,"Test");
// Design
renderer.setFillBox(false);
renderer.setMeanVisible(false);
chart.setBackgroundPaint(Color.white);
plot.setBackgroundPaint(Color.lightGray);
plot.setDomainGridlinePaint(Color.white);
plot.setDomainGridlinesVisible(true);
plot.setRangeGridlinePaint(Color.white);
plot.getRangeAxis().setRange(-10.5, 10.5);
chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new Dimension(3250,600));
}
private DefaultBoxAndWhiskerCategoryDataset createCategoryDataset() {
dataset = new DefaultBoxAndWhiskerCategoryDataset();
ArrayList<Double> values = createSampleData();
ArrayList<String> categories = createSampleCategories();
for (int i=0;i<=5;i++){
for (String category : categories){
dataset.add(values,i,category);
}
}
return dataset;
}
private ArrayList<String> createSampleCategories() {
ArrayList<String> tmp = new ArrayList<String>();
for (int i=0;i<=20;i++){
tmp.add("Category"+i);
}
return tmp;
}
private ArrayList<Double> createSampleData() {
ArrayList<Double> tmp = new ArrayList<Double>();
for (int i=0;i<10;i++){
tmp.add(5.0);
tmp.add(7.0);
tmp.add(2.0);
tmp.add(4.0);
}
return tmp;
}
private void createJFreeChart(CategoryPlot plot, String title){
chart = new JFreeChart(title, plot);
}
public static void main(String[] args) throws IOException {
StretchedBoxAndWhiskerExample demo = new StretchedBoxAndWhiskerExample();
}
}
推荐答案
设置包含 ChartPanel （而不是图表）的首选大小，如下所示此处和此处 。
Set the preferred size of the containing ChartPanel, not the chart, as shown here and here.
附录：我不认为你可以有用地添加图表到滚动窗格。而应创建类似于 SlidingCategoryDataset 实现 BoxAndWhiskerCategoryDataset 。在控制第一个显示的索引的框架中添加一个滚动条。
Addendum: I don't think you can usefully add a chart to a scroll pane. Instead, create a class similar to SlidingCategoryDataset that implements BoxAndWhiskerCategoryDataset. Add a scroll bar to the frame that controls the first displayed index.
附录：一个不那么雄心勃勃的方法是简单地使用一些合适的控件，如下面的示例所示。
Addendum: A somewhat less ambitious approach is simply to page a portion of the data set using some suitable control, as shown in the example below.
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.BoxAndWhiskerRenderer;
import org.jfree.data.statistics.DefaultBoxAndWhiskerCategoryDataset;
/** @see http://stackoverflow.com/questions/6844759 */
public class BoxAndWhiskerDemo {
private static final int COLS = 20;
private static final int VISIBLE = 4;
private static final int ROWS = 5;
private static final int VALUES = 10;
private static final Random rnd = new Random();
private List<String> columns;
private List<List<List<Double>>> data;
private DefaultBoxAndWhiskerCategoryDataset dataset;
private CategoryPlot plot;
private ChartPanel chartPanel;
private JPanel controlPanel;
private int start = 0;
public BoxAndWhiskerDemo() {
createData();
createDataset(start);
createChartPanel();
createControlPanel();
}
private void createData() {
columns = new ArrayList<String>(COLS);
data = new ArrayList<List<List<Double>>>();
for (int i = 0; i < COLS; i++) {
String name = "Category" + String.valueOf(i + 1);
columns.add(name);
List<List<Double>> list = new ArrayList<List<Double>>();
for (int j = 0; j < ROWS; j++) {
list.add(createValues());
}
data.add(list);
}
}
private List<Double> createValues() {
List<Double> list = new ArrayList<Double>();
for (int i = 0; i < VALUES; i++) {
list.add(rnd.nextGaussian());
}
return list;
}
private void createDataset(int start) {
dataset = new DefaultBoxAndWhiskerCategoryDataset();
for (int i = start; i < start + VISIBLE; i++) {
List<List<Double>> list = data.get(i);
int row = 0;
for (List<Double> values : list) {
String category = columns.get(i);
dataset.add(values, "s" + row++, category);
}
}
}
private void createChartPanel() {
CategoryAxis xAxis = new CategoryAxis("Category");
NumberAxis yAxis = new NumberAxis("Value");
BoxAndWhiskerRenderer renderer = new BoxAndWhiskerRenderer();
plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
JFreeChart chart = new JFreeChart("BoxAndWhiskerDemo", plot);
chartPanel = new ChartPanel(chart);
}
private void createControlPanel() {
controlPanel = new JPanel();
controlPanel.add(new JButton(new AbstractAction("\u22b2Prev") {
@Override
public void actionPerformed(ActionEvent e) {
start -= VISIBLE;
if (start < 0) {
start = 0;
return;
}
createDataset(start);
plot.setDataset(dataset);
}
}));
controlPanel.add(new JButton(new AbstractAction("Next\u22b3") {
@Override
public void actionPerformed(ActionEvent e) {
start += VISIBLE;
if (start > COLS - VISIBLE) {
start = COLS - VISIBLE;
return;
}
createDataset(start);
plot.setDataset(dataset);
}
}));
}
public ChartPanel getChartPanel() {
return chartPanel;
}
public JPanel getControlPanel() {
return controlPanel;
}
public static void main(String[] args) throws IOException {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BoxAndWhiskerDemo demo = new BoxAndWhiskerDemo();
frame.add(demo.getChartPanel(), BorderLayout.CENTER);
frame.add(demo.getControlPanel(), BorderLayout.SOUTH);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
这篇关于JFreeChart缩放Boxplots与几个类别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！
