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Radial Column Chart
Also known as: Circular Column Graph or Star Graph
This type of graph uses a grid of concentric circles to plot bars on. Each circle on the graph represents a value on a scale, while the radial dividers (lines spanning from centre) are used for each category or interval (if a histogram).
Typically, the lower values on the scale start from the centre and increase with each circle. However, negative values can also be displayed on a Radial Column Chart, by having zero start from any of the outer circles (from the central one) and all circles within it used for negative values.
The bars normally start from the centre and extend outwards, however ranges can be shown with variable starting points, like in a Span Chart. Bars can also be stacked in same way a Stacked Bar Graph is.