Range brush
Choose and refine an interval on an overview without resampling.
ChartBrushbrush
Set brush on a time or numeric Chart, then add ChartBrush after ChartPlot. Drag across the overview to choose an interval, drag either handle to refine it, or use the handles with the keyboard. Focus snaps to real observations; Show all restores the full extent. Brushing does not aggregate or resample data.