jiayuu commented on issue #9511: 关于force图表相关问题 URL: https://github.com/apache/incubator-echarts/issues/9511#issuecomment-444339792 - 目前拖拽是这样解决的 但是节点少的时候有点问题。 ```c myChart.on('mouseup', function (params) { if (params.dataType === 'node') { let option = myChart.getOption(); if (option.series[0].data.length > 1) { option.series[0].data[params.dataIndex].x = params.event.offsetX; option.series[0].data[params.dataIndex].y = params.event.offsetY; option.series[0].data[params.dataIndex].fixed = true; myChart.setOption(option); } } }); ``` > 我还有一个扩展的需求，就是在某点扩展出来跟他有关系的，目前的实现方案是setOption追加data，感觉这个不是最佳方案，因为setOption会重新绘图，节点的位置又都变了，我已经不知道在什么地方扩展的了。希望作者或者各位大佬帮忙解决下我的问题
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