用Java制作实时StreamGraph(图形数据可视化)
我正在寻找Java中的实时图形数据可视化器示例,但我只找到了这一个,它不是动态实时可视化器:用Java制作实时StreamGraph(图形数据可视化),java,graph,data-visualization,stream-graph,Java,Graph,Data Visualization,Stream Graph,我正在寻找Java中的实时图形数据可视化器示例,但我只找到了这一个,它不是动态实时可视化器: import java.awt.BasicStroke; import java.awt.Color; import java.awt.Dimension; import java.awt.FontMetrics; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.Re
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.Stroke;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class GraphPanel extends JPanel {
private int width = 800;
private int heigth = 400;
private int padding = 25;
private int labelPadding = 25;
private Color lineColor = new Color(44, 102, 230, 180);
private Color pointColor = new Color(100, 100, 100, 180);
private Color gridColor = new Color(200, 200, 200, 200);
private static final Stroke GRAPH_STROKE = new BasicStroke(2f);
private int pointWidth = 4;
private int numberYDivisions = 10;
private List<Double> scores;
public GraphPanel(List<Double> scores) {
this.scores = scores;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
double xScale = ((double) getWidth() - (2 * padding) - labelPadding) / (scores.size() - 1);
double yScale = ((double) getHeight() - 2 * padding - labelPadding) / (getMaxScore() - getMinScore());
List<Point> graphPoints = new ArrayList<>();
for (int i = 0; i < scores.size(); i++) {
int x1 = (int) (i * xScale + padding + labelPadding);
int y1 = (int) ((getMaxScore() - scores.get(i)) * yScale + padding);
graphPoints.add(new Point(x1, y1));
}
// draw white background
g2.setColor(Color.WHITE);
g2.fillRect(padding + labelPadding, padding, getWidth() - (2 * padding) - labelPadding, getHeight() - 2 * padding - labelPadding);
g2.setColor(Color.BLACK);
// create hatch marks and grid lines for y axis.
for (int i = 0; i < numberYDivisions + 1; i++) {
int x0 = padding + labelPadding;
int x1 = pointWidth + padding + labelPadding;
int y0 = getHeight() - ((i * (getHeight() - padding * 2 - labelPadding)) / numberYDivisions + padding + labelPadding);
int y1 = y0;
if (scores.size() > 0) {
g2.setColor(gridColor);
g2.drawLine(padding + labelPadding + 1 + pointWidth, y0, getWidth() - padding, y1);
g2.setColor(Color.BLACK);
String yLabel = ((int) ((getMinScore() + (getMaxScore() - getMinScore()) * ((i * 1.0) / numberYDivisions)) * 100)) / 100.0 + "";
FontMetrics metrics = g2.getFontMetrics();
int labelWidth = metrics.stringWidth(yLabel);
g2.drawString(yLabel, x0 - labelWidth - 5, y0 + (metrics.getHeight() / 2) - 3);
}
g2.drawLine(x0, y0, x1, y1);
}
// and for x axis
for (int i = 0; i < scores.size(); i++) {
if (scores.size() > 1) {
int x0 = i * (getWidth() - padding * 2 - labelPadding) / (scores.size() - 1) + padding + labelPadding;
int x1 = x0;
int y0 = getHeight() - padding - labelPadding;
int y1 = y0 - pointWidth;
if ((i % ((int) ((scores.size() / 20.0)) + 1)) == 0) {
g2.setColor(gridColor);
g2.drawLine(x0, getHeight() - padding - labelPadding - 1 - pointWidth, x1, padding);
g2.setColor(Color.BLACK);
String xLabel = i + "";
FontMetrics metrics = g2.getFontMetrics();
int labelWidth = metrics.stringWidth(xLabel);
g2.drawString(xLabel, x0 - labelWidth / 2, y0 + metrics.getHeight() + 3);
}
g2.drawLine(x0, y0, x1, y1);
}
}
// create x and y axes
g2.drawLine(padding + labelPadding, getHeight() - padding - labelPadding, padding + labelPadding, padding);
g2.drawLine(padding + labelPadding, getHeight() - padding - labelPadding, getWidth() - padding, getHeight() - padding - labelPadding);
Stroke oldStroke = g2.getStroke();
g2.setColor(lineColor);
g2.setStroke(GRAPH_STROKE);
for (int i = 0; i < graphPoints.size() - 1; i++) {
int x1 = graphPoints.get(i).x;
int y1 = graphPoints.get(i).y;
int x2 = graphPoints.get(i + 1).x;
int y2 = graphPoints.get(i + 1).y;
g2.drawLine(x1, y1, x2, y2);
}
g2.setStroke(oldStroke);
g2.setColor(pointColor);
for (int i = 0; i < graphPoints.size(); i++) {
int x = graphPoints.get(i).x - pointWidth / 2;
int y = graphPoints.get(i).y - pointWidth / 2;
int ovalW = pointWidth;
int ovalH = pointWidth;
g2.fillOval(x, y, ovalW, ovalH);
}
}
// @Override
// public Dimension getPreferredSize() {
// return new Dimension(width, heigth);
// }
private double getMinScore() {
double minScore = Double.MAX_VALUE;
for (Double score : scores) {
minScore = Math.min(minScore, score);
}
return minScore;
}
private double getMaxScore() {
double maxScore = Double.MIN_VALUE;
for (Double score : scores) {
maxScore = Math.max(maxScore, score);
}
return maxScore;
}
public void setScores(List<Double> scores) {
this.scores = scores;
invalidate();
this.repaint();
}
public List<Double> getScores() {
return scores;
}
private static void createAndShowGui() {
List<Double> scores = new ArrayList<>();
Random random = new Random();
int maxDataPoints = 40;
int maxScore = 10;
for (int i = 0; i < maxDataPoints; i++) {
scores.add((double) random.nextDouble() * maxScore);
// scores.add((double) i);
}
GraphPanel mainPanel = new GraphPanel(scores);
mainPanel.setPreferredSize(new Dimension(800, 600));
JFrame frame = new JFrame("DrawGraph");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
import java.awt.BasicStroke;
导入java.awt.Color;
导入java.awt.Dimension;
导入java.awt.FontMetrics;
导入java.awt.Graphics;
导入java.awt.Graphics2D;
导入java.awt.Point;
导入java.awt.RenderingHints;
导入java.awt.Stroke;
导入java.util.ArrayList;
导入java.util.List;
导入java.util.Random;
导入javax.swing.JFrame;
导入javax.swing.JPanel;
导入javax.swing.SwingUtilities;
公共类GraphPanel扩展了JPanel{
私有整数宽度=800;
私有内部高度=400;
私有整数填充=25;
私有int-labelPadding=25;
专用颜色lineColor=新颜色(44、102、230、180);
私有颜色pointColor=新颜色(100100100180);
私有颜色gridColor=新颜色(200200200200200);
专用静态最终行程图_行程=新基本行程(2f);
私有int pointWidth=4;
私有整数分割=10;
私人名单分数;
公共图形面板(列出分数){
这个分数=分数;
}
@凌驾
受保护组件(图形g){
超级组件(g);
图形2d g2=(图形2d)g;
g2.setRenderingHint(renderingHits.KEY\u ANTIALIASING,renderingHits.VALUE\u ANTIALIAS\u ON);
double-xScale=((double)getWidth()-(2*填充)-labelPadding)/(scores.size()-1);
双yScale=((双)getHeight()-2*padding-labelPadding)/(getMaxScore()-getMinScore());
List graphPoints=new ArrayList();
对于(int i=0;i0){
g2.设置颜色(网格颜色);
g2.绘制线(padding+labelPadding+1+pointWidth,y0,getWidth()-padding,y1);
g2.设置颜色(颜色为黑色);
字符串yLabel=((int)((getMinScore()+(getMaxScore()-getMinScore())*((i*1.0)/numberYDivisions))*100))/100.0+“”;
FontMetrics=g2.getFontMetrics();
int labelWidth=metrics.stringWidth(yLabel);
g2.拉丝(yLabel,x0-labelWidth-5,y0+(metrics.getHeight()/2)-3);
}
g2.抽绳(x0,y0,x1,y1);
}
//对于x轴
对于(int i=0;i1){
int x0=i*(getWidth()-padding*2-labelPadding)/(scores.size()-1)+padding+labelPadding;
int-x1=x0;
int y0=getHeight()-padding-labelPadding;
int y1=y0-点宽度;
如果((i%((int)((scores.size()/20.0))+1))==0){
g2.设置颜色(网格颜色);
g2.绘图线(x0,getHeight()-padding-labelPadding-1-pointWidth,x1,padding);
g2.设置颜色(颜色为黑色);
字符串xLabel=i+“”;
FontMetrics=g2.getFontMetrics();
int labelWidth=metrics.stringWidth(xLabel);
g2.拉丝(xLabel,x0-labelWidth/2,y0+metrics.getHeight()+3);
}
g2.抽绳(x0,y0,x1,y1);
}
}
//创建x轴和y轴
g2.抽绳(padding+labelPadding,getHeight()-padding-labelPadding,padding+labelPadding,padding);
g2.抽绳(padding+labelPadding,getHeight()-padding-labelPadding,getWidth()-padding,getHeight()-padding-labelPadding);
Stroke-oldstrope=g2.getStroke();
g2.设置颜色(lineColor);
g2.设定行程(图形_行程);
对于(int i=0;i