code: function (alphaCoordinates) {
  			var coordinateLabels = 'abcdefghijklmnopqrst';
  			var intersection = [];
  
  			intersection[0] = coordinateLabels.indexOf(alphaCoordinates.substring(0, 1));
  			intersection[1] = coordinateLabels.indexOf(alphaCoordinates.substring(1, 2));
  
  			return intersection;
  		}
docs: Translate alpha coordinates into an array
  @param string alphaCoordinates
  @return array [x, y]