code: function (point) {
  		// Find the polar plotX and plotY
  		var chart = this.chart,
  			xy = this.xAxis.postTranslate(point.rectPlotX, this.yAxis.len - point.plotHigh);
  		point.plotHighX = xy.x - chart.plotLeft;
  		point.plotHigh = xy.y - chart.plotTop;
  	}
docs: Translate a point's plotHigh from the internal angle and radius measures to
  true plotHigh coordinates. This is an addition of the toXY method found in
  Polar.js, because it runs too early for arearanges to be considered (#3419).