Extend xAxis with no point on edges in nvd3

Question

I am developing charts with ng2-nvd3. Initially set xAxis range in lines:

            forceX: [950, 3050],
            brushExtent: [1000, 3000],

Providing these lines I want to filter my chart with brushExtent on xAxis and simultaneously I want to extend that area to unset first and last point of chart on edges of the area.

1.Result of use lines above:

2.Only with set brushExtent:

3.Going to achieve this result(on edges there aren't point of chart):

http://plnkr.co/edit/LP8a0oAhkIsDBYLvpKhT?p=preview