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Use Different Chart Elements to Achieve Different Effects
Vary the chart elements to achieve different effects.
In[1]:=

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GraphicsGrid@

 Partition[

  Table[PieChart[Range[5], ChartElementFunction -> f, 

    ChartStyle -> 46], {f, {"Sector", "PlateauSector", "GlassSector", 

     "GradientSector", "NoiseSector", "OscillatingSector", 

     "SquareWaveSector", "TriangleWaveSector"}}], 3, 3, 1, ""]
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