when drawing start, draw slices and labels in an animation or just show finished product

space between first slice and last slice in degrees

Whether or not to 'invert' the swirl. In an inverted swirl, the labels are on the outside and the slices are lines rather than real surfaces.
Note, that the invert property is only active when labels are visible (labelsVisible=true)

Overriding default value: now FALSE

plotBy - items - this is default, it results in slices that are colored by items and a legend that is organized by labels on the slices
plotBy - series - it results in slices where slices of the same series are the same color, and legend shows labels for each series (not labels on the slices)

Return default style for the specified data element (if any). This is used to restore styles when chart elements are unselected. Subclasses can override this.

Return an array of labels to display within the Legend box.
Default implementation is to return a list of series names.

Given a logical value, return the text to use for an axis label. base is an arbitrary delta but can be used to make labels 0-based or 1-based default is 0-based for backwards compatibility Can be overriden by user through sub-classing

Indicates that this chart has no axes and associated grids

Indicates that this chart supports "show multiples" mode.

Do not show 3-D plot area.

Draw data series for this chart. group is the SVG container for the chart components.

Set the value of a named property.