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问题:

rgeo::geojson不对“甜甜圈”多边形进行解码并将几何图形返回为_text

慕佑运
2023-03-14

有些地理区域是围绕一个主要大都市的区域,其中每个都是一个不同的行政区。瑞士(事实上)和巴西的首都就是这种情况。

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这些区域的GeoJSON数据定义为几何类型多边形或多边形。但在这两种情况下,当命令

decode(json_line) 

启动,以便几何形状可以作为文本返回并存储在postGIS中

geometry.as_text

将生成以下错误:

RGeo::Error::InvalidGeometry: LinearRing failed ring test

我把它解释为多边形没有闭合。是的,但有皱纹。
一个人怎么处理这个有环有环的环?

共有1个答案

越伟泽
2023-03-14

在查看了所有的地理坐标并测试了字符串后,结论是这个问题不是一个空多边形与多边形的问题。

相反,当放大数据时,有一个地区(以舍尔滕的小村庄伯尔尼为例),它是法语汝拉地区的一个讲德语的岛屿--他们似乎选择了非法语州的一部分。但是,包含它的多边形将它定义为大得多的多边形的扩展,从而产生交叉,从而产生linearring错误。

基本上,多边形不能有接触自己边缘的点。
伯尔尼问题可以通过将交叉区域提取到自己的多边形中来解决...

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