Sanitation_Districts

View metadata for key information about this dataset. Sanitation Collection areas are subdivisions of Sanitation Districts. Districts are aggregated up to Sanitation Areas. This polygon layer has an accompanying arc layer. Certain arcs in the arc layer contain data signifying information relating it to the polygon layer. It can tell you if both sides of the arc belong to one of the bounding polygons. All the arcs, including those with no boundary info, have naming attributes for labeling the polygon borders. Contact the Streets GIS unit for public consumption of the corresponding arc layer. For questions about this dataset, contact [e-mail]. For technical assistance, email [e-mail].请查看元数据（metadata）以获取本数据集的关键信息。卫生收集区（Sanitation Collection areas）是卫生区（Sanitation Districts）的细分单元，卫生区可聚合为卫生区域（Sanitation Areas）。本多边形图层（polygon layer）配套有弧段图层（arc layer）。弧段图层中的部分弧段携带有用于关联多边形图层的相关数据。该数据可用于判断该弧段的两侧是否同属于某一边界多边形。所有弧段（包括无边界信息的弧段）均带有命名属性，可用于标注多边形边界。若需公开使用对应弧段图层，请联系街道GIS工作组。若对本数据集有疑问，请发送邮件至[e-mail]；如需技术支持，请发送邮件至[e-mail]。