This element filters by radius. There is no interactive facility with this element; it is specified solely through the Attributes sheet. balls with radii in the interval (rl, ru). (If ru is not specified, then the interval is set equal to (rl - t, rl + t); if t is also not specified, t is set equal to rl × 10-6. Note that a tolerance should only be specified if ru is not specified.)


Not: Invert the filter element’s selection.

Extent: If checked, only include the item if its entire extent fits within this filter element’s definition. If not checked, the item’s centroid is used to determine the location of the item and whether it is within the filter element’s definition.