indexLabelLineDashType: String

Sets the Dash Type for indexLabel’s line. It is applicable only for pie and doughnut charts when indexLabelPlacement is set to “outside”. For other chart-types, indexLabelLineThickness should be set greater than zero.

Other Supported Dash Types:

• “solid”
• “shortDash”
• “shortDot”
• “shortDashDot”
• “shortDashDotDot”
• “dot”
• “dash”
• “dashDot”
• “longDash”
• “longDashDot”
• “longDashDotDot”

• By default supported only by Pie / Doughnut Chart types.
• For other chart-types, indexLabelLineThickness should be set grater then zero.

var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
data:[{
     type: "pie",
     indexLabelLineDashType: "dot",

}]
});
chart.render();