Produces a linear set (array) of numbers that are evenly spaced along the number line.

linspace.js

/**
 * Produces a sequence (array) of numbers that are evenly spaced along the number line.
 * @param {Number} x1 The first number in the sequence
 * @param {Number} x2 The last number
 * @param {Number} n  The number of numbers in the sequence
 * @param {Number} d  What decimal place to round each element of the sequence
 * @return {Array} The linearly spaced sequence
 */

const linspace = (x1, x2, n, d) => {
  n = n || 100
  d = d || 2
  
  const gap = (x2-x1)/(n-1)
  let set = []
  
  // Generate each member of the set.
  for (var i = 0; i < n; i++) {
    set[i] = (x1 + (i * gap))
  }
  
  // Round each member of the set to the desired length
  let roundedSet = set.map(n => (Math.round(n * Math.pow(10, d)) / Math.pow(10,d)))
  
  return roundedSet
}