[GitHub] zhjb7 commented on issue #8867: 对数坐标的指数为10，怎样不显示10，100，1000，而是显示20，200，2000？

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zhjb7 commented on issue #8867: 对数坐标的指数为10，怎样不显示10，100，1000，而是显示20，200，2000？
URL: https://github.com/apache/incubator-echarts/issues/8867#issuecomment-413131543
 
 
   谢谢 Ovilia，我刚刚实现了这个chart。我一共加入了2个X轴，第1个原来的对数轴给隐藏了，第2个X轴设置为数值轴，但只显示X轴标签最小值20和最大值20000。之后加入了4个bar的series，每个bar宽度设置为1，data设置为[200,y轴最小值],[200,y轴最大值],[2000,y轴最小值],[2000,y轴最大值]，其中y轴最小值的2个bar设置label为显示为x轴的值。
   代码如下：
   
   option = {
               title: {
                   text: '对数轴示例',
                   left: 'center'
               },
               yAxis: {
                   type: 'value',
                   min:-20,max:20,interval:4
               },
   
               xAxis: [
                   {
                       show:false,
                       name:"real_x_axis",
                       position:"top",
                       type:"log",
                       logBase:10,
                       nameGap:30,
                       axisTick:{show:false},
                       axisLine:{
                           lineStyle:{
                               width:1.5,
                               color:"#F0F0F0"
                           }
                       },
                       axisLabel:{
                           show:true,
                           color:"#000000"
                       },
                       min:20,
                       max:20000
                   },
                   {
                       type:"value",
                       position:"bottom",
                       axisLine:{
                           lineStyle:{
                               width:1.5,
                               color:"#000000"
                           }
                       },
                       axisTick:{show:false},
                       axisLabel:{
                           show:true,
                           showMinLabel:true,
                           showMaxLabel:true,
                           color:"#000000"
                       },
                       interval:20000,
                       min:20,
                       max:20000
                   }
               ],
               series: [
                   {
                       type: 'line',
                       smooth:true,
                       data: [[1000, 3],[2000,9],[3000,3]]
                   },
                   {
                       type: 'bar',
                       barWidth:1,
                       itemStyle:
                       {
                           color:"#000000"
                       },
                       data: [[200,20],
                       {
                           value: [200,-20],
                           label:
                           {
                               show:true,
                               color:"#000000",
                               position:"insideBottom",
                               distance:-20,
                               formatter: '{@[0]}'
                           }
                       },
                       [2000,20],
                       {
                           value: [2000,-20],
                           label:
                           {
                               show:true,
                               color:"#000000",
                               position:"insideBottom",
                               distance:-20,
                               formatter: '{@[0]}'
                           }
                       }]
                   }
               ]
           };
   
   ![q -20180815163500](https://user-images.githubusercontent.com/7479250/44139306-44ad1c54-a0a9-11e8-8efa-138e3ef53a3e.png)
   

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