能否添加BD09直接转WGS84的方法

[HPDell]

我使用BD09转GCJ02然后再转WGS84好像产生了很大偏差。但是使用python版本的BD09直接转WGS84的方法偏差不是很大。

[wandergis]

收到，这几天会测试看下误差，如果误差不大就加进去。

[HPDell]

确实有一定误差。图中这个应该是一套数据的，但是通过python和js分别转出来，就变成了两套点。

[wandergis]

 const coordtransform = require('coordtransform');
 var bd09towgs84 = function bd09towgs84(lng, lat) {
    var mid = coordtransform.bd09togcj02(lng, lat);
    return coordtransform.gcj02towgs84(mid[0], mid[1]);
  };

  var wgs84tobd09 = function wgs84tobd09(lng, lat) {
    var mid = coordtransform.wgs84togcj02(lng, lat);
    return coordtransform.gcj02tobd09(mid[0], mid[1]);
  };

@HPDell 你试试这两个函数，测试了几个转换结果跟python的一样的，你帮忙根据你这个业务场景再测试下，谢谢啦

[vmvz]

误差这么大, 不好用呀, 哪些地图可以直接获取 wgs84?

[HPDell]

等谷歌地图开放吧

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From: dai3 [email protected] Sent: Tuesday, March 27, 2018 7:56:58 PM To: wandergis/coordtransform Cc: Yigong Hu; Mention Subject: Re: [wandergis/coordtransform] 能否添加BD09直接转WGS84的方法 (#22)

误差这么大, 不好用呀, 哪些地图可以直接获取 wgs84?

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[vmvz]

@HPDell Bing 不知道可以不可以

[HPDell]

现在能找到的地图服务都不行

---

From: dai3 [email protected] Sent: Wednesday, March 28, 2018 5:08:01 PM To: wandergis/coordtransform Cc: Yigong Hu; Mention Subject: Re: [wandergis/coordtransform] 能否添加BD09直接转WGS84的方法 (#22)

@HPDellhttps://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FHPDell&data=02%7C01%7C%7C742947c5caed49cb9b4c08d5948b6918%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636578248830739826&sdata=mHUQZXH%2FRjVD%2BlZcjZal%2B57MIMXExaSVM9NxyuSGnJQ%3D&reserved=0 Bing 不知道可以不可以

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