SetDrawPieBorders — Enable or disable drawing of pie chart segment borders
$plot->SetDrawPieBorders($draw
)
SetDrawPieBorders
enables or disables drawing of the
the segment borders on pie charts. These are the lines that outline each
pie segment.
By default, the pie chart segment borders are drawn for unshaded pie charts, and not drawn for shaded pie charts. (By default, pie charts are shaded. See SetShading.)
Use SetPieBorderColor or SetGridColor to set the border color.