How do I use visual filtering on iOS?
Visual filter means that you interactively select a subset of a chart and it re-draws to show just that section.
Tap and hold to activate the chart menu.
Keep holding and slide to the Visual Filtering menu item to activate drag-select filtering mode.
Drag-select to drill down to lower levels of detail, based on what columns you select.
Tip: To exit drag-select mode before selecting, click the X.
The chart redraws to show the selected subset of data.
Related FAQ: What are filters?