Chart > Chart Panels > Charting Types > Area Chart 
Area charts display a sequence of filled areas between the axis (or an origin line) and the value line. Area charts are usually used for comparing two or more values or representing the contribution of each value to a total (stacks), usually over time or other X measurement. Following is a description of the area chart settings:
Sub Type  the following table summarizes the different subtypes of the area chart type:
Subtype 
X Dimension Type 
Z Dimension Type 
Data Requirements 
Description 


First in Chart 
Next in Chart 

Classical  Displayed in both 2D and 3D. The X dimension type is always Categorical. 

Series 
Categorical 
Categorical 
Value 
Value 
Shows series behind each other (best viewed in 3D). 
Stacked 
Categorical 
One 
Value 
Value 
Piles series on top of each other. Supports negative values. 
Stacked Percent 
Categorical 
One 
Value 
Value 
Piles series on top of each other and scales each pile to 100%. 
XY Scatters  Displayed in both 2D and 3D. The X dimension type is always Numeric. 

XY Scatter 
Numeric 
Categorical 
Value 
Value 
Besides the value, each data point has a X coordinate at which it is positioned. 
XY Scatter Stacked 
Numeric 
One 
Value 
Value 
The first in chart defines the stack X position. Next in chart piled on top. Supports negative values. 
XY Scatter Stacked Percent 
Numeric 
One 
Value 
Value 
The first in chart defines the stack X position. Next in chart are piled on top. Each pile is scaled to 100%. 
All subtypes support a Label value for each data point. The Y dimension is always Numeric.
Depth Percent  defines the depth of 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.
The settings in the Palette tab are described in the Value Palette Settings topic.
The automatic positioning of data labels in the case of all types of stacks is the data point center. In all other cases data labels are displayed on top of the data point.
The automatic legend mode in all subtypes evaluates to series (e.g. the series is displayed in the legend).