Get node dataIndex from its ID.

[sethwilsonUS]

One-line summary [问题简述]

Since selecting a legend category seems to change a graph node's dataIndex, I would like to be able to access a node's dataIndex by its ID.

Version & Environment [版本及环境]

• ECharts version [ECharts 版本]: eCharts 4.2.0-rc1
• Browser version [浏览器类型和版本]: Google Chrome 69
• OS Version [操作系统类型和版本]: Mac OS X 10.14 Mojave

Expected behaviour [期望结果]

I have found a getNodeById function in the source code, which is the sort of thing I would like to have--find a node's dataIndex based on its ID. But I can't figure out a way to use this functionality in my code.

ECharts option [ECharts配置项]

option = {
    title: {
      text: 'Document Reuse',
      subtext: 'Default layout',
      top: 'bottom',
      left: 'right'
    },
    tooltip: {},
    legend: [{
      data: categories.map(function(category) {
        return category.name;
      })
    }],
    animationDuration: 1500,
    animationEasingUpdate: 'quinticInOut',
    series: [{
      name: 'All Links',
      type: 'graph',
      layout: 'none',
      data: graph.nodes,
      links: graph.links,
      categories: categories,
      roam: true,
      focusNodeAdjacency: true,
      itemStyle: {
        normal: {
          borderColor: '#fff',
          borderWidth: 1,
          shadowBlur: 10,
          shadowColor: 'rgba(0, 0, 0, 0.3)'
        }
      },
      label: {
        position: 'right',
        formatter: '{b}'
      },
      lineStyle: {
        color: 'source',
        curveness: 0.3
      },
      emphasis: {
        lineStyle: {
          width: 10
        }
      }
    }]
};

Other comments [其他信息]

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.