Function sample

src/core/core.scale.js:23–33

* Returns a new array containing numItems from arr * @param {any[]} arr * @param {number} numItems

(arr, numItems)

 * @param {number} numItems
 */
function sample(arr, numItems) {
  const result = [];
  const increment = arr.length / numItems;
  const len = arr.length;
  let i = 0;

  for (; i < len; i += increment) {
    result.push(arr[Math.floor(i)]);
  }
  return result;
}

/**
 * @param {Scale} scale