private void ChangeRenderableSeriesType()
        {
            var rSeriesVm = RenderableSeriesViewModels.FirstOrDefault(s => s.IsSelected);

            if (rSeriesVm != null)
            {
                var index = RenderableSeriesViewModels.IndexOf(rSeriesVm);

                RenderableSeriesViewModels[index]            = ViewModelsFactory.New(SelectedSeriesType.Type, 0, RenderableSeriesViewModels[index].DataSeries);
                RenderableSeriesViewModels[index].IsSelected = true;

                ZoomExtents();
            }
        }