[GitHub] [incubator-echarts] pissang commented on issue #12240: 官方webgl地球案例中为什么Z坐标要只取正的而且要取平方根？

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pissang commented on issue #12240: 官方webgl地球案例中为什么Z坐标要只取正的而且要取平方根？
URL: https://github.com/apache/incubator-echarts/issues/12240#issuecomment-596198987
 
 
   @hugetiny 这里的 x，y 对应了经纬度，z 值是任意的数据（比如人口数量等等），echarts 会把 z 值线性映射到半径值（映射范围参考 https://www.echartsjs.com/zh/option-gl.html#globe.globeOuterRadius），用来表示数的大小。例子里去平方根只是对这个数据做了下特殊处理，不会让数据的对比太过夸张（类似 log 轴）。可以不需要考虑这个

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