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更快的精确迭代方式 #1

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Artoria2e5 opened this issue Feb 9, 2017 · 2 comments
Open

更快的精确迭代方式 #1

Artoria2e5 opened this issue Feb 9, 2017 · 2 comments

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@Artoria2e5
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Artoria2e5 commented Feb 9, 2017 •
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Caijun 2014 有一个比以前使用的方法收敛更快的精确转换，并且可以泛化到 BD-09LL 上。其描述可见于这个知乎答案，参考公有领域 js 实现在此。可以用这个瞎拼的 jsbin 页面测试来回转换精度（ΔRoundtrip）。

说起来百度墨卡托那个要是能把泰勒出来的东西包回去变成正常的三角函数大概就好读了。要能做个从正常百度地图里面取坐标的小工具就更好了……
@ChaosBee
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多谢大神。回头研究下~~

@Artoria2e5
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（还是没搞懂为什么 LL2MC 各个区域的第一项不会全是 0……）

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@ChaosBee @Artoria2e5