[GitHub] TonyChanNJU opened a new issue #8282: When rendering as SVG, throw Error: attribute transform: Expected number, "rotate(NaN,111.68400 000…".

[GitBox <gi...@apache.org>]

TonyChanNJU opened a new issue #8282: When rendering as SVG, throw Error: <text> attribute transform: Expected number, "rotate(NaN,111.68400 000…".
URL: https://github.com/apache/incubator-echarts/issues/8282
 
 
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   ### One-line summary [问题简述]
   When rendering as SVG, and using gradient color in bar,  Error  " <text> attribute transform: Expected number, 'rotate(NaN,111.68400 000…'" will be thrown. Then copy the html in  a frame and print the iframe, the label in bar will disappear.
   Without using gradient,  the error  will also be thrown, but the label will show in print dialog.
   
   
   
   ### Version & Environment [版本及环境]
   + ECharts version [ECharts 版本]: 4.0.4, if using 4.1.0, a more serious error will be thrown and nothing can be rendered
   + Browser version [浏览器类型和版本]: The latest Chrome
   + OS Version [操作系统类型和版本]: OSX 10.13.4
   
   
   
   
   
   ### Expected behaviour [期望结果]
   
   When rendering as SVG and using gradient color, no error will be thrown and the label can show in print dialog.
   
   
   
   
   
   ### ECharts option [ECharts配置项]
   <!-- Copy and paste your 'echarts option' here. -->
   <!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 option。如何得到能运行的 option 参见上方的 guidelines for contributing] -->
   ```javascript
   config = {
             color: [ ],
             legend:{
                 bottom:'1',
                 selectedMode:false
             },
             xAxis: [
                 {
                     type: 'category',
                     data: ['本月', '上月'],
                 }
             ],
             yAxis: [
                 {
                     type: 'value'
                 }
             ],
             series: [
                 {
                     name: '我的错题数量',
                     type: 'bar',
                     barGap: '50%',
                     barMaxWidth:'18%',
                     silent:true,
                     itemStyle:{
                         barBorderRadius: [5, 5, 0, 0],
                         color:new echarts.graphic.LinearGradient(0, 1, 0, 0,[
                             {offset: 0, color: '#436CE1'},
                             {offset: 1, color: '#9587E9'}
                         ])
                     },
                     label:{
                         show:true,
                         color:'#333333',
                         position:'top',
                         formatter:'{c}题',
                     },
                     data: [38, 42],
                 },
                 {
                     name: '本市平均值',
                     type: 'bar',
                     barMaxWidth:'18%',
                     silent:true,
                     itemStyle:{
                         barBorderRadius: [5, 5, 0, 0],
                         color:new echarts.graphic.LinearGradient(0, 1, 0, 0,[
                             {offset: 0, color: '#2DDEB1'},
                             {offset: 1, color: '#33C6E7'}                  
                         ])
                     },
                     label:{
                         show:true,
                         color:'#333333',
                         position:'top',
                         formatter:'{c}题',
   
                     },
                     data: [24, 40]
                 }
             ]
         }
   
   ```
   
   
   
   
   ### Other comments [其他信息]
   <!-- For example: Screenshot or Online demo -->
   <!-- [例如，截图或线上实例 (JSFiddle/JSBin/Codepen)] -->
   
   

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