Area reports show trends over time for related attributes.
Spline reports show how one or more values change over time by connecting a series of known data
points with a curve that emphasizes the trend over individual data points.
For example, you can create an area or spline reports for incident counts, to show how the
number of incidents changes over time. The incident count often increases during the first few
months after a product upgrade is deployed. Over time, the number of reported incidents decreases
as users become more accustomed to the changes in the product.
When the sections of an area report with multiple datasets overlap, it is not possible to
drill down into the various sections. To drill down, click items in the legend to clear them
from the report.