Highcharts列长度不成比例

Question

我使用highcharts创建了堆叠柱形图，用于处理我使用自定义对数函数的大量数据变量。工作正常但是图表高度存在问题并不明显。

 function calcLog(val) {
  return (val > 0) ? Math.log(val * Math.E) : null;
}

function calcAntiLog(val) {
return (val > 0) ? Math.round(Math.exp(val) / Math.E) : null;
}


 function calcTotalAntiLog(valMatrix, idx) {
 if (valMatrix) {
    sum = 0;
    for (i = 0; i < valMatrix.length; i++) {
        sum += calcAntiLog(valMatrix[i][idx]);
    }
    return sum;
  }
return "";
}


 function calcTotalAntiLog2(hcObj) {
  if (hcObj) {
    var idx = hcObj.x;
    sum = 0;
    for (i = 0; i < hcObj.axis.chart.series.length; i++) {
        sum += calcAntiLog(hcObj.axis.chart.series[i].yData[idx]);
    }
    return sum;
  }
   return null;
 }


function das(hcObj) {
  if (hcObj) {
    var idx = hcObj.x;
      sum = 0;
    zeroVisits = 0;
    for (i = 0; i < hcObj.axis.chart.series.length; i++) {
        sum += calcAntiLog(hcObj.axis.chart.series[i].yData[idx]);
        if (i == 0) zeroVisits = sum;
    }
    return (100 * (sum - zeroVisits)) / sum;
}
return null;
}

请参阅http://jsfiddle.net/rutup/6hxPU/26/