我有一个数据集，显示了X国甲方和乙方的宗教信仰，以及每个国家宗教信徒的百分比。
df <- data.frame(
PartyA = c("Christian","Muslim","Muslim","Jewish","Sikh"),
PartyB = c("Jewish","Muslim","Christian","Muslim","Buddhist"),
ChristianPop = c(12,1,74,14,17),
MuslimPop = c(71,93,5,86,13),
JewishPop = c(9,2,12,0,4),
SikhPop = c(0,0,1,0,10),
BuddhistPop = c(1,0,2,0,45)
)
# PartyA PartyB ChristianPop MuslimPop JewishPop SikhPop BuddhistPop
# 1 Christian Jewish 12 71 9 0 1
# 2 Muslim Muslim 1 93 2 0 0
# 3 Muslim Christian 74 5 12 1 2
# 4 Jewish Muslim 14 86 0 0 0
# 5 Sikh Buddhist 17 13 4 10 45
借此，我想将“参与”的宗教信徒的总数加在一起。因此，第一行将得到一个等于 …
如果这是一个新手问题，我很抱歉，但我真的需要帮助。如何导入图像并将其绘制在屏幕上？我想我需要使用 BufferedImage，但是如何呢？
包 com.jonas.game；
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
public class Game extends JFrame implements Runnable{
private static final long serialVersionUID = 1L;
int WIDTH = 1024;
int HEIGHT = 576;
int SCALE = 1;
int heroX,heroY;
int x,y;
public static void main(String[] args) {
new Game();
}
public Game(){
setSize(WIDTH * SCALE, HEIGHT * SCALE);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setResizable(false);
setTitle("BasicJava2DGame");
setVisible(true);
addKeyListener(new Input());
heroX=getWidth()/2-16;
heroY=getHeight()/2-16;
try {
while(true){
update();
Thread.sleep(20);
}
} catch …假设我有一个网页,一只猫盯着我看.然后图像将开始放大猫眼.更深入,更深入......如何在HTML/CSS/JavaScript中实现这一目标？
我一直收到错误,说我的函数"key"没有定义.这是HTML代码:
<html>
<head>
<link rel="stylesheet" type="text/css" href="interface.css" />
<script language="text/javascript" src="main.js"></script>
</head>
<body onkeypress="key()">
<p>Money: <p id="money">0</p></p>
</body>
</html>
和JavaScript:
int money = 0;
function key()
{
money += 1;
document.getElementById("money").innerHTML = money;
}