Ruby on rails 使用gem-postgis_适配器

添加多边形

local=local.new（：geom=>**多边形（'-71.1776585052917 42.3902909739571，-71.1776820268866 42.3903701743239，-71.1776063012595 42.3903825660754'）**）

错误：语法错误，意外的tFLOAT，应为“>”
构造多边形：

Polygon.from_coordinates([[[-71.1776585052917,42.3902909739571],[-71.1776820268866,42.3903701743239],[-71.1776063012595,42.3903825660754],[-71.1776585052917,42.3902909739571]]], 4326)

确保外部线性环是闭合的（即三角形有四个点）。我还设置了一个SRID=4326，这是一个猜测，您正在使用WGS 84