ExcludedPointValues excludes certain values from being selectable. The values come from the InputSelection.Point element's PointValueColumn attribute. For example, a bar chart with RelevanceFilter may include a bar indicating “Other” which should not be clickable.
Multiple values may be entered in a comma-delimited list.
When the chart's DataLayer has a RelevanceFilter, area represented by the IrrelevanceLabel, the "Other" area, is the default for ExcludedPointValues.