The following macro adjusts the size of the secondary plot to 50% of the size of the main
pie:
Sub ChangeSize()
Dim chtg As ChartGroup
Set chtg = ActiveChart.ChartGroups(1)
chtg.SecondPlotSize = 50
End Sub
Setting the Bubble Size
The bubble chart type includes an incredibly misleading setting that you should always
avoid. A bubble chart places circles at particular x and y coordinates. The sizes of the circles
are determined by the values specified in the third column of the data series.
By default, Excel scales the size of the circle so that the area of the circle is proportionate to
the data. This is an appropriate choice. However, you can override this ...
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