CCT 5m Contours

Contour lines connect a series of points of equal elevation and are used to illustrate topography, or relief, on a map and can be drawn at various desired intervals. This dataset displays contours drawn at every 5m height interval. Numerous contours that are close together indicate hilly or mountainous terrain; and when far apart, they represent a gentler slope. The contours were derived from LiDAR (Light Detection and Ranging) data that was captured in 2 blocks in the years 2021 and 2023. The southern half of the City was flown in Jan 2023 and the northern half was flown in Dec 2021. The point cloud has a density of 10 points per square metre and a vertical accuracy of 0.1m (95%). The contours are derived through bipolar interpolation from the 5m DEM (raster) model. The height reference used is the SA Land Levelling Datum. All spatial layers are served live from internal systems, an item's "Last Updated" or "Publish Date" refers to the Metadata only. REST Endpoint access: https://citymaps.capetown.gov.za/agsext/rest/services/Theme_Based/ODP_SPLIT_2/FeatureServer/0等高线连接一系列海拔高度相等的点位，用于在地图上呈现地形地貌，可根据需求设置不同的绘制间隔。本数据集展示的是以5米为高程间隔绘制的等高线。密集分布的等高线代表丘陵或山地地形，而间距稀疏的等高线则表示坡度较为平缓的区域。本次数据集的等高线数据源自2021年与2023年分两个区块采集的激光雷达（Light Detection and Ranging）数据：该城市南区于2023年1月完成航测，北区则于2021年12月完成航测。该点云数据的密度为每平方米10个点，垂直精度达0.1米（置信水平95%）。本次等高线通过双极插值法由5米栅格数字高程模型（Digital Elevation Model，DEM）生成。本次使用的高程基准为南非土地平差基准面（SA Land Levelling Datum）。所有空间图层均由内部系统实时提供服务，要素的"最后更新时间"或"发布日期"仅指代元数据的对应时间。REST接口访问地址：https://citymaps.capetown.gov.za/agsext/rest/services/Theme_Based/ODP_SPLIT_2/FeatureServer/0