How do I use visual filtering on Android?
Visual filtering means that you drag-select a subset of a chart and it re-draws to show just that section.
Tap on a chart and hold to activate the chart menu of popup bubbles.
Keep holding and slide to the menu item to activate drag-select mode.
Drag-select to drill down to lower levels of detail, based on what columns you select.
The chart redraws to show the subset of data.