Group Mode - defines the way in which the bar series groups with the previous bar series in the chart. Possible values are:
Series - the area series is displayed in a separate depth space (starts a new series).
Stacked - the area series is stacked on top of the previous Series or Stacked Percent area series.
Stacked Percent - the area series is stacked on top of the previous Series or Stacked area series. The stack is scaled to 100%.
Depth Percent - defines the area in the series in percents of the series size along the depth axis.
Drop Lines - when checked, displays vertical lines at each data point, which connect the data point value with the area base line.
Sampling Mode - controls whether the area uses sampling. When using sampling the area will detect very close individual area segments and display a single area segment that has the minimum and maximum values of the area segments that comprise it. This reduces the number of visual area segments and therefore leads to improved performance. When using sampling the area series will not regard settings for markers and data labels, individual appearance styles and shadow. Possible value are:
Auto - The area series uses sampling only when the number of data points is large.
Enabled - The area series always uses sampling.
Disabled - The area series does not use sampling. This is the default.
Sample Distance - controls the precision of the area series when it aggregates adjacent area segments. The precision is specified in points.