nd(val + Math.random() * 80)
                    ]);
                    barData.push(echarts.number.round(val, 2));
                }

                function renderItem(params, api) {
                    var xValue = api.value(0);
                    var highPoint = api.coord([xValue, api.value(1)]);
                    var lowPoint = api.coord([xValue, api.value(2)]);
                    var halfWidth = api.size([1, 0])[0] * 0.1;
                    var style = api.style({
                        stroke