[GitHub] [incubator-echarts] jarben opened a new issue #13444: Generate geo tiles on the fly (ideally v5.x feature!)

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

jarben opened a new issue #13444:
URL: https://github.com/apache/incubator-echarts/issues/13444


   ### What problem does this feature solve?
   Large geo jsons are usually very slow to render in echarts (1000 polygons ), it would be great to do a similar technique that MapBox does here: https://github.com/mapbox/geojson-vt (slicing GeoJSON data into vector tiles on the fly)
   It is possible to use echartsGL to support more polygons but it's not reliable that this would work on all devices   the GL map is more limited than standard. Generating / simplifying polygons on the fly might the ultimate solution for this
   Any thoughts? :) 
   
   ### What does the proposed API look like?
   virtualTiles: {
           enabled: true, // whether to enable this feature
   	maxZoom: 14,  // max zoom to preserve detail on; can't be higher than 24
   	tolerance: 3, // simplification tolerance (higher means simpler)
   	extent: 4096, // tile extent (both width and height)
   	buffer: 64,   // tile buffer on each side
   	debug: 0,     // logging level (0 to disable, 1 or 2)
   	lineMetrics: false, // whether to enable line metrics tracking for LineString/MultiLineString features
   	promoteId: null,    // name of a feature property to promote to feature.id. Cannot be used with `generateId`
   	generateId: false,  // whether to generate feature ids. Cannot be used with `promoteId`
   	indexMaxZoom: 5,       // max zoom in the initial tile index
   	indexMaxPoints: 100000 // max number of points per tile in the index
   }
   
   <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
   <!-- This issue is in English. DO NOT REMOVE -->


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[GitHub] [incubator-echarts] echarts-bot[bot] commented on issue #13444: Generate geo tiles on the fly (ideally v5.x feature!)

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

echarts-bot[bot] commented on issue #13444:
URL: https://github.com/apache/incubator-echarts/issues/13444#issuecomment-710777135


   Hi! We've received your issue and please be patient to get responded. 🎉
   The average response time is expected to be within one day for weekdays.
   
   In the meanwhile, please make sure that **you have posted enough image to demo your request**. You may also check out the [API](http://echarts.apache.org/api.html) and [chart option](http://echarts.apache.org/option.html) to get the answer.
   
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   Have a nice day! 🍵


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