运行 ❯
获取您
自己的
网站
×
更改方向
保存代码
更改主题，深色/浅色
前往 Spaces
<!DOCTYPE html> <html> <body> <canvas id="myCanvas" width="400" height="400" style="border:1px solid grey"></canvas> <script> const canvas = document.getElementById("myCanvas"); const ctx = canvas.getContext("2d"); ctx.fillStyle = "#FF0000"; canvas.height = canvas.width; ctx.transform(1, 0, 0, -1, 0, canvas.height) let xMax = canvas.height; let yMax = canvas.width; let slope = 1.2; let intercept = 70; const xArray = [50,60,70,80,90,100,110,120,130,140,150]; const yArray = [7,8,8,9,9,9,10,11,14,14,15]; // Plot Scatter ctx.fillStyle = "red"; for (let i = 0; i < xArray.length-1; i++) { let x = xArray[i]*xMax/150; let y = yArray[i]*yMax/15; ctx.beginPath(); ctx.ellipse(x, y, 3, 3, 0, 0, Math.PI * 2); ctx.fill(); } // Plot Line ctx.moveTo(0, intercept); ctx.lineTo(xMax, f(xMax)); ctx.strokeStyle = "black"; ctx.stroke(); // Line Function<br> function f(x) { return x * slope + intercept; } </script> </body> </html>
