[GitHub] [echarts] KehaoWu opened a new issue #14210: echarts 5.0.1 getDataURL时，报错TypeError: Cannot read property 'dpr' of undefined

Thu, 04 Feb 2021 01:28:54 -0800 


KehaoWu opened a new issue #14210:
URL: https://github.com/apache/echarts/issues/14210


   ### Version
   5.0.1
   
   ### Steps to reproduce
   调用 getDataURL 时会报错
   
   ```
   TypeError: Cannot read property 'dpr' of undefined
   setContextTransform
   node_modules/echarts/node_modules/zrender/lib/canvas/graphic.js:378
     375 | }
     376 | function setContextTransform(ctx, el) {
     377 |     var m = el.transform;
   > 378 |     var dpr = ctx.dpr || 1;
     379 |     if (m) {
     380 |         ctx.setTransform(dpr * m[0], dpr * m[1], dpr * m[2], dpr * 
m[3], dpr * m[4], dpr * m[5]);
     381 |     }
   
   ```
   
   ### What is expected?
   正常运行，导出图片
   
   ### What is actually happening?
   报错
   
   <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
   <!-- This issue is in English. DO NOT REMOVE -->


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