无法找出我的代码出了什么问题？ 使用numpy进行2D矩阵卷积

问题描述

我刚刚从Andrew Ng的deeplearning.ai Coursera课程中学到了矩阵卷积，我想尝试使用numpy进行自己的2D矩阵卷积，但是我一直遇到以下错误。 （代码底部）

我不知道我做错了什么，因为第一次迭代f = 100且w = 0，所以我不明白为什么dcast(setDT(df),g1 ~ g2,value.var = "val",fill = 0) 是一个100 x 99的矩阵。我尝试对“ horiEnd”执行+1，但改为101变为100。我也尝试过aSlice = dataColor[vertStart:vertEnd,vertStart:vertEnd]，但这似乎也不是问题。我认为问题是在for循环之后开始的。任何帮助将不胜感激。

assert(dataColor.shape == (1200,1200))

解决方法

在循环的第一步中，

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class WallpaperCalculator implements ActionListener {
    private static JTextField lengthText2;
    private static JTextField heightText;
    private static JButton button2;
    private static JLabel total;

    public static void Wallpaper() {

        JPanel panel = new JPanel();
        panel.setLayout(null);

        JFrame frame = new JFrame();
        frame.setSize(350,300);
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.setLocation(555,318);
        frame.add(panel);

        //sets the title
        JLabel title = new JLabel();
        title.setBounds(10,20,300,25);
        title.setText("Wallpaper Calculator");
        title.setForeground(Color.BLUE);
        panel.add(title);

        //sets the lengths title
        JLabel length = new JLabel();
        length.setBounds(10,55,25);
        length.setText("Length Input");
        panel.add(length);

        //creates a field for the length text input
        lengthText2 = new JTextField();
        lengthText2.setBounds(120,90,25);
        panel.add(lengthText2);

        //creates a width text label
        JLabel height = new JLabel();
        height.setBounds(10,80,25);
        height.setText("height Input");
        panel.add(height);

        //created a field for the width text input
        heightText = new JTextField();
        heightText.setBounds(120,25);
        panel.add(heightText);


        //makes a field to set a text box so people can see where the total will be
        JLabel totalAmount = new JLabel();
        totalAmount.setBounds(10,150,25);
        totalAmount.setText("Total Amount:");
        panel.add(totalAmount);

        //makes a field to present the answer
        total = new JLabel();
        total.setBounds(125,25);
        panel.add(total);


        //makes a button to get the two lengths and start the multiplication process
        button2 = new JButton();
        button2.setBounds(10,130,25);
        button2.setText("Find");
        button2.setForeground(Color.blue);
        button2.addActionListener(new TrimCalculator());
        panel.add(button2);

        frame.setVisible(true);

    }

    //gets the button and changes it from a string into a int so it can be calculated
    @Override
    public void actionPerformed(ActionEvent c) {
        String lengthAm = lengthText2.getText();
        String heightAm = heightText.getText();

        //changes the strings into a double
        double length = Double.parseDouble(lengthAm);
        double height = Double.parseDouble(heightAm);

        // multiplies the two sides
        double sidesTotal = length * height;

        //divides the sidesTotal to get Total
        double Total = sidesTotal / 40;
        System.out.println(Total);

        //changes the double variable newTotal into a string
        String f = String.valueOf(Total);

        //makes the button actually print the amount of trim needed
        if (c.getSource() == button2){
            total.setText(f+" ft");
        }

    }

}

这一切都很好，并且按预期运行。
但是进入第1,100步（11,101）

pip3 --install --upgrade pip
pip3 install numpy pytest
python -m pytest test.py

现在，您可以使用h = 0,vertEnd = 100 w = 0,horiEnd = 100 aSlice.shape = (100,100) 将形状设置为超出数据范围：

h = 1100,vertEnd = 1200 # Note the index is 1200,which requires length of 1201
w = 0,horiEnd = 100

在这里

vertEnd = 1200