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Posted to commits@echarts.apache.org by "zshtxwd (via GitHub)" <gi...@apache.org> on 2023/12/14 02:20:13 UTC

[I] [Feature] Specify Node Relationships in Graph using "id" Attribute [echarts]

zshtxwd opened a new issue, #19401:
URL: https://github.com/apache/echarts/issues/19401

   ### What problem does this feature solve?
   
   In the graph component, it is necessary to add an "id" attribute to each element in the data, and then use this "id" to establish connections in the "links" through the "target" and "source" attributes.
   
   When working with the graph, a unique identifier is needed to handle cases where nodes have the same name. While the ECharts documentation mentions that the "links" support using "name" and the index of data, using "name" may lead to situations with identical names, and using the index is not convenient when dealing with dynamic data.
   
   I propose using an "id" to specify nodes and establish connections through the "links." In fact, ECharts already supports using "id," but this is not explicitly documented. It's important to note that the "id" cannot be a number; it must be a string. If it's a number, ECharts recognizes it as a data index.
   
   You can then use these "id" values in the "links," where the "target" and "source" values should be the same as the "id" set in the data.
   
   I will provide an example below. If this is not a bug, I suggest documenting this feature. If it is a bug, I hope this functionality can be made available in the next release.
   
   ### What does the proposed API look like?
   
   ### example
   ```JavaScript
    data: [
           { name: '李白', category: '亲人', id: '1' },
           { name: '杜甫', category: '亲人', id: '2' },
           { name: '李白', category: '租户', id: '3' },
           { name: '王之涣', category: '租户', id: '4' },
           { name: '王之涣', category: '亲人', id: '5' },
           { name: '杜甫', category: '亲人', id: '6' }
         ],
   links: [
           { source: '4', target: '5', value: '夫妻' },
           { source: '2', target: '3', value: '租赁' },
           { source: '3', target: '4', value: '亲人' },
           { source: '1', target: '5', value: '亲人' },
           { source: '1', target: '2', value: '亲人' },
           { source: '4', target: '6', value: '亲人' },
         ]
   ```
   ![image](https://github.com/apache/echarts/assets/113961416/e05d2c5c-0b33-445a-9257-e260ae63f09c)
   


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Re: [I] [Feature] Specify Node Relationships in Graph using "id" Attribute [echarts]

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.

github-actions[bot] commented on issue #19401:
URL: https://github.com/apache/echarts/issues/19401#issuecomment-6089347201

   This issue has been automatically marked as stale because it did not have recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this issue.


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Re: [I] [Feature] Specify Node Relationships in Graph using "id" Attribute [echarts]

Posted by "Nicooow (via GitHub)" <gi...@apache.org>.

Nicooow commented on issue #19401:
URL: https://github.com/apache/echarts/issues/19401#issuecomment-2401784089

   I'm reopening this issue as I encountered the same problem with a Sankey diagram.
   **However, for Sankey diagrams, the id is prioritized over the name, making this technique ineffective!**
   
   The solution is to use a formatter: as shown [here](https://echarts.apache.org/examples/en/editor.html?c=line-simple&code=CYQwLiAEC8kNoChKQN6QHYgLYFMBckA5IHLmgvm6EA0kAxuDgOYD2ATgJ4GGBNcoF1ylkAlsA4BGQpAC-FJKgzZ8RQDrmgalc-tMAxbsiPPoI4AmMZOlpMuDmVV0mbDoH3PQOxGuoUQDMRqclNyOgaOdA0nKAxbZW6jZahI7OHAAsHiay5kQBwVRqGrbavFR6RACscV4J8oTKIenhOtkuhABsRggAugDcCAA2_OgA1gDOMPDx3YwArszUxbFUEMz0OGAc-VQAbiCtQ8UADAUygyNjBnxTM3NufMurxcKbEp7bw6PF7pMg07MxpytrBlfGhTv3Igdnkd5u9zjFvjc0H89kRRE8XsdCIYlh9xhCBncYYQJpBDq8iHUUWC8t9Gi1Wl1erB2pSAHRYEAABwAFMyAB4UfgAShgAD5UNJulTIKAILSAGYdYAASXQwBwbOZjD5kEYtMEMGgsDZtOhOC50jAYD6opAEqlsvliuV0H5ao1Wu1tLxYANyGYsxG6FQeoIQvhwNxYCJn0gOrOa3ECHEBoQjEZYH4jG9sBQ0gARiBqJ16MxhnKAMKMVosAgAIjAzBA6G6jOeOHQYDLNzAjGLicZBDTyGQlf49BmzHL_HUWGb0l7zH7g4A8uhy1hht0cIvFjhx8gfpBl1OcN0uxPcaxGcVutXOjhWHxD6aCKaqIeaT0CBSejdkK0QOmcK0Dz2e-KLAMkaOBDkQKDpuIhCHlGm7Rk0QA)


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Re: [I] [Feature] Specify Node Relationships in Graph using "id" Attribute [echarts]

Posted by "helgasoft (via GitHub)" <gi...@apache.org>.

helgasoft commented on issue #19401:
URL: https://github.com/apache/echarts/issues/19401#issuecomment-1857243187

   wow, you are right, links work directly with node IDs! 
   So that's another documentation omission (Easter egg) 🐣
   Someday, someone, will fix them all... ⌛


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