我有这个矩阵7x16,里面有规范化的双,我想用它做一个图形表示。
0.00 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.00 0.00 0.00 0.00
0.01 0.02 0.04 0.07 0.07 0.06 0.03 0.02 0.03 0.06 0.07 0.05 0.02 0.02 0.01 0.01
0.01 0.06 0.09 0.16 0.23 0.17 0.09 0.07 0.33 0.41 0.43 0.13 0.05 0.02 0.04 0.01
0.01 0.05 0.14 0.15 0.21 0.26 0.11 0.11 0.43 1.00 0.44 0.16 0.05 0.02 0.05 0.01
0.01 0.05 0.08 0.15 0.16 0.13 0.09 0.08 0.35 0.33 0.32 0.10 0.04 0.00 0.04 0.00
0.01 0.03 0.05 0.11 0.18 0.17 0.17 0.17 0.17 0.17 0.17 0.11 0.05 0.01 0.03 0.00
0.01 0.01 0.03 0.06 0.06 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
像这样的东西
但我不知道如何做到这一点。如果有人可以帮忙。 Tahnks提前:)
答案 0 :(得分:1)
我建议您阅读有关如何进行渲染的内容,特别是使用JFrame和JPanels(我认为这是最简单的方法来实现您想要做的事情)。我已经编写了一些代码来为您提供与您正在寻找的输出非常相似的输出,但是具有灰阶。 http://prntscr.com/f9pdef是5个示例输出。顶部之一是您提供的原始数据,底部4是原始数据但模糊,每个使用不同的乘数来增加亮度。一旦您了解了如何使用JFrame和JPanels,您就可以轻松修改我所写的内容以获得您想要的内容。我编写的示例代码如下:
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Rectangle2D;
/**
* Created by ----- on 5/19/2017.
*/
public class Window extends JFrame{
private final double[][] gradientOriginal = new double[][]{
{0.00, 0.00, 0.00, 0.01, 0.01, 0.01, 0.01, 0.01, 0.01, 0.01, 0.01, 0.01, 0.00, 0.00, 0.00, 0.00},
{0.01, 0.02, 0.04, 0.07, 0.07, 0.06, 0.03, 0.02, 0.03, 0.06, 0.07, 0.05, 0.02, 0.02, 0.01, 0.01},
{0.01, 0.06, 0.09, 0.16 , 0.23 , 0.17 , 0.09 , 0.07 , 0.33 , 0.41 , 0.43 , 0.13 , 0.05 , 0.02 , 0.04 , 0.01},
{0.01 , 0.05 , 0.14 , 0.15 , 0.21 , 0.26 , 0.11 , 0.11 , 0.43 , 1.00 , 0.44 , 0.16 , 0.05 , 0.02 , 0.05 , 0.01},
{0.01 , 0.05 , 0.08 , 0.15 , 0.16 , 0.13 , 0.09 , 0.08 , 0.35 , 0.33 , 0.32 , 0.10 , 0.04 , 0.00 , 0.04 , 0.00},
{0.01 ,0.03 , 0.05 , 0.11 ,0.18 , 0.17 , 0.17 , 0.17 , 0.17 , 0.17 , 0.17 , 0.11 , 0.05 , 0.01 ,0.03 , 0.00},
{0.01 , 0.01 , 0.03 , 0.06 , 0.06 , 0.04 , 0.00 , 0.00 , 0.00 , 0.00 , 0.00 , 0.00 , 0.00 , 0.00 , 0.00 , 0.00},
};
private final int width = gradientOriginal[0].length; //width of our array
private final int height = gradientOriginal.length; //height of our array
private final int multiplier = 3; //multiplier to make the output a little brighter
private final double[][] gradient = new double[height][width]; //our averaged vector
private final int size = 32; //the size of one of our squares
private JPanel panel;
public Window(){
init();
}
private void init(){
for(int y = 0; y < height; y++){ //loop through every position in the old array, average the surrounding squares, and put it in the new array
for(int x = 0; x < width; x++){
int surrounding = 0;
double total = 0;
for(int yy = -1; yy <= 1; yy++){
for(int xx = -1; xx <= 1; xx++){
if(y + yy >= 0 && y + yy < height && x + xx >= 0 && x + xx < width){
surrounding++;
total += gradientOriginal[y + yy][x + xx];
}
}
}
gradient[y][x] += total / surrounding;
System.out.println(surrounding);
}
}
panel = new JPanel(){
@Override
protected void paintComponent(Graphics g){ //this gets called when we call repaint() later
super.paintComponent(g);
Graphics2D g2d = (Graphics2D)g;
for(int y = 0; y < height; y++){
for(int x = 0; x < width; x++){
Rectangle2D rect = new Rectangle2D.Double(x * size, y * size, size, size); //create a rectangle to render
int shade = Math.min((int)(gradient[y][x] * 255 * multiplier), 255); //set the color of the rectangle
g2d.setColor(new Color(shade, shade, shade)); //also set color of rectangle
g2d.fill(rect); //fill in the rectangle
}
}
}
};
panel.setPreferredSize(new Dimension(width * size, height * size)); //some initialization associated with the JPanel and JFrame
add(panel);
setResizable(false);
pack();
setTitle("Gradient");
setLocationRelativeTo(null);
}
public static void main(String[] args){
Window myWindow = new Window(); //create a window and set it to be visible
myWindow.setVisible(true);
}
}
我建议在Frames和Swing上使用Java教程 - https://docs.oracle.com/javase/tutorial/uiswing/components/frame.html,结合Graphics和Graphics2D上的Javadocs。如果您有任何其他问题,请随时给我发消息。