private void drawScale() {
PVLinearScale scale = PV.Scale.linear(0, maxChartItemValue).range(0,
Math.min(height, width) - MARGIN_SIZE);
getChart().add(PV.Dot).data(scale.ticks()).left(width / 2)
.bottom(height / 2).fillStyle("").strokeStyle(Colors.GRAY_1)
.lineWidth(scaleLineWidth).radius(scaleRadius);
}
private void drawWedge() {