Sets the size of the symbol for each data point (for creating bubble charts).
One common usage for this method is to draw circle symbols of different sizes at each data points, creating a bubble chart.
This method supports any valid data symbols. You can create bubble charts with square bubbles, or even custom data symbols.
ChartDirector supports specifying sizes as pixels or in axis scale. The unit is specified by using the following predefined constants.
|PixelScale||0||The unit is measured in pixels.
|RadialAxisScale||2||The unit is measured in the radial axis scale.
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