Geodetic Control Points 2019

Geodetic Control. The dataset contains points representing planimetric geodetic control, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO). These features were originally captured in 2015 and updated in 2017 and 2019. The following planimetric layers were updated: - Airport Runway and Taxiway - Barrier Lines - Building Polygons - Bridge and Tunnel Polygons - Curb Lines - Grate Points - Horizontal and Vertical Control Points - Hydrography Lines - Obscured Area Polygons - Railroad Lines - Recreational Areas - Road, Parking, and Driveway Polygons - Sidewalk and Stair Polygons - Swimming Pools - Water Polygons大地测量控制。本数据集包含表征平面大地测量控制的点位数据，其作为华盛顿特区地理信息系统（DC Geographic Information System, DC GIS）的组成部分，由华盛顿特区首席技术官办公室（Office of the Chief Technology Officer, OCTO）开发构建。该数据集的原始要素采集于2015年，并分别于2017年和2019年完成更新。本次更新涉及以下平面制图图层： - 机场跑道与滑行道 - 隔离带边线 - 建筑物面要素 - 桥梁与隧道面要素 - 路缘边线 - 排水篦子点位 - 平面与高程控制点 - 水文边线 - 遮蔽区域面要素 - 铁路边线 - 休闲活动区域 - 道路、停车场与车道面要素 - 人行道与楼梯面要素 - 游泳池要素 - 水体面要素