By default, the Stack property is "", which indicates that the series is not part of any stacking-group. The stacked feature, a fundamental aspect of data visualization, is characterized by bars subdivided into distinct segments, each delineating a cumulative effect. This feature serves as an effective tool for portraying the distribution or production of monetary resources over a temporal continuum. By visually segregating and stacking these segments, the Stacked Bar feature facilitates a comprehensive understanding of how individual values contribute to the overall total, offering valuable insights into proportional relationships within the dataset. The Type property specifies the type of the serie (the way the data is represented).

The following screen shot show the data un-stacked (default):

The following screen shot show the same data stacked :

The Stack property is supported by the following chart-types:

• "area", an area chart or area graph displays graphically quantitative data. It is based on the line chart. The area between axis and line are commonly emphasized with colors, textures and hatchings. Commonly one compares two or more quantities with an area chart. (data requires array of numbers, supports vertical field, scrollable)
• "column", a column chart or column graph is a chart or graph that presents categorical data with rectangular columns with heights proportional to the values that they represent. A horizontal column chart is called a bar chart. (data requires array of numbers, supports vertical field, scrollable)
• "line", a line chart or line graph, also known as curve chart is a type of chart which displays information as a series of data points called 'markers' connected by straight line segments. It is a basic type of chart common in many fields. It is similar to a scatter plot except that the measurement points are ordered (typically by their x-axis value) and joined with straight line segments. A line chart is often used to visualize a trend in data over intervals of time - a time series - thus the line is often drawn chronologically. In these cases they are known as run charts. (data requires array of numbers, supports vertical field, scrollable)
• "radararea", a radar chart is a graphical method of displaying multivariate data in the form of a two-dimensional chart of three or more quantitative variables represented on axes starting from the same point. The relative position and angle of the axes is typically uninformative, but various heuristics, such as algorithms that plot data as the maximal total area, can be applied to sort the variables (axes) into relative positions that reveal distinct correlations, trade-offs, and a multitude of other comparative measures. (data requires array of numbers, non-scrollable)
• "radarcolumn", displays data in radial columns starting from one center point. The circle is divided into equal portions depending on the number of columns and each column group occupies one portion (similar with "radarArea" type, data requires array of numbers, non-scrollable)
• "radarline", similar with radarArea type. (data requires array of numbers, non-scrollable)