// 

// An illustration of 2-dimensional perlin noise in square format.

​

function setup() {

  createCanvas(400, 400);

  background(220);

​

  let xSample = 0;

  let ySample = 0;

  let inc = 0.02;

  for (let y = 0; y < height; y = y + 1) {

    for (let x = 0; x < width; x = x + 1) {

      let greyAmt = noise(xSample, ySample) * 255;

      stroke(greyAmt);

      point(x, y);

​

      // Move x sample point

      xSample = xSample + inc;

    }

    // Reset x sample point

    xSample = 0;

    // Move y sample point

    ySample = ySample + inc;

  }

}