Stroke.transparency property. Gets or sets a value between 0.0 (opaque) and 1.0 (clear) representing the degree Of transparency Of the stroke....8 , 2.6 , 3.9 ], [ 2.7 , 3.2 , 0.8 , 1.7 ]); //...visible = false ; dataPoints . at ( 2 ). marker . format . fill . presetTextured...