The Area graph or series is used to represent a set of two-dimensional data as a filled area. It has two mandatory
series components, Position and Value.
The data in these two components specify the positions and values of the series
pieces of the Area series. It also has an optional series component called LabelMember
whose data may be used as the mark labels for the series pieces.
The UseOrigin property determines whether to use the Origin
property to determine the base position of the filled area. If this property is set to
false, the origin of the vertical axis is used as the base position of
the filled area.
If multiple Area series are drawn in the
same graph, the series that belong to the same group (those have the same value
of the StackGroup property) can be stacked together in a way specified by