ubique/lib/matarrs/linspace.js

A mathematical and quantitative library for Javascript and Node.js

/**
 * Array Creation and Concatenation
 */
 module.exports = function($u) {
/**
 * @method linspace
 * @summary Create linearly spaced arrays
 * @description  Create linearly spaced arrays
 *            
 * @param  {number} a lower bound
 * @param  {number} b upper bound
 * @param  {number} n number of points
 * @return {array}
 *
 * @example
 * ubique.linspace(1,10,5);
 * // [ 1, 3.25, 5.5, 7.75, 10 ]
 */
 $u.linspace = function(a,b,n) {
  if (arguments.length < 2) {
    throw new Error('not enough input arguments');
  }
  n = n == null ? 10 : n;
  var v = [];
  var step = (b - a) / (n - 1);
  v[0] = a;
  v[n - 1] = b;
  for (var i = 0;i < n;i++) {
   v[i] = a + step * i;
 }
 return v;
}

}