if (spotRadius && options.get('maxSpotColor')) {
            x = xvalues[$.inArray(this.maxyorg, yvalues)];
            target.drawCircle(canvasLeft + Math.round((x - this.minx) * (canvasWidth / rangex)),
              canvasTop + Math.round(canvasHeight - (canvasHeight * ((this.maxyorg - this.miny) / rangey))),
              spotRadius, undefined,