shapely.geos.ReadingError：由于读取输入时出现错误，无法创建几何图形

Question

当我尝试在以下输入上使用 shapely.wkt.loads 时，我收到标题中的错误：

POLYGON((-93.577695846689437 40.813390731817726,-93.577674865779628 40.813444137603014,-93.577722549304582 40.8136196133706,-93.577945709640048 40.814004897950532,-93.5781135556297 40.814165115070466,-93.578243255589527 40.814229965262996,-93.578363418973865 40.814268111930119,-93.578405380213241 40.814252853305611,-93.578418731892242 40.814207077283442,-93.578376770009427 40.81411170971851,-93.578311920291867 40.814050674367543,-93.578300476322624 40.814008712491074,-93.578235626128318 40.813978195044577,-93.5779953002333 40.813646316512269,-93.577934265283389 40.813581466662242,-93.577924728143131 40.813535690301279,-93.577777862415886 40.813383102422016,-93.577695846689437 40.81339073181772))

它采用 WKT 格式，省去了您滚动浏览所有内容的麻烦。这是我正在阅读的大约 100 个多边形之一，也是唯一一个抛出此错误的多边形。需要明确的是，当我打电话时：

p = loads('POLYGON((-93.577695846689437 40.813390731817726,-93.577674865779628 40.813444137603014,-93.577722549304582 40.8136196133706,-93.577945709640048 40.814004897950532,-93.5781135556297 40.814165115070466,-93.578243255589527 40.814229965262996,-93.578363418973865 40.814268111930119,-93.578405380213241 40.814252853305611,-93.578418731892242 40.814207077283442,-93.578376770009427 40.81411170971851,-93.578311920291867 40.814050674367543,-93.578300476322624 40.814008712491074,-93.578235626128318 40.813978195044577,-93.5779953002333 40.813646316512269,-93.577934265283389 40.813581466662242,-93.577924728143131 40.813535690301279,-93.577777862415886 40.813383102422016,-93.577695846689437 40.81339073181772))')

我收到错误：shapely.geos.ReadingError: Could not create geometry because of errors while reading input.

我什至费尽心思将其解析为常规的 shapely.geometry.Polygon 格式。然后，它工作正常。但我不想让代码因烦人的字符串解析（以及丑陋的 try/ except）而变得混乱。当然，shapely/wky.py 文件绝对没有告诉我任何信息......如果有人知道发生了什么/如何修复它，我将不胜感激。谢谢！

Answer 1

几何体包含非闭环。查看第一个和最后一个坐标：

• -93.577695846689437 40.813390731817726
• -93.577695846689437 40.81339073181772

在最后一个坐标字符串的末尾添加6将使两者相等，并且外壳是形成多边形所需的闭合线性环。