PetaJakarta.org Major Open Data Collection – Pumps and Floodgates in Jakarta, Indonesia

The pumps and floodgates layer consists of a point geometry representation of features representing pumps and floodgates in Jakarta, Indonesia. Attributes include names, type, and geometries representing the geographical locations of infrastructure as point features. The dataset is a geo-processed version of the data captured by the PetaJakarta.org project, using field-survey and tracing of aerial imagery. The data contains 67 pumps and 28 floodgates respectively. Geo-processing included updating the dataset with verified featured locations acquired by GPS survey in November 2014. Further, geometries were snapped to be coincident with line features representing rivers, canals and streams from the ‘Waterways in Jakarta’ layer. The snapping tolerance distance was 110m or less. Features outside of this threshold in the source data were removed, and it should be noted that this dataset does not represent an exhaustive list of all pumps and floodgates in Jakarta, Indonesia. The data uses the WGS 84 / UTM zone 48S (EPSG:32748) projected coordinate reference system. The dataset is network-ready for building both directed and undirected graphs representing hydrological infrastructure network for Jakarta, Indonesia.

水泵与防洪闸门图层采用点几何要素形式，表征印度尼西亚雅加达境内的水泵与防洪闸门设施。其属性字段涵盖设施名称、类型，以及作为点要素表征基础设施地理位置的几何信息。本数据集为PetaJakarta.org项目采集数据的地理处理版本，采集工作结合了实地勘测与航空影像矢量化追踪。该数据集分别包含67台水泵与28座防洪闸门。地理处理工作包含基于2014年11月GPS勘测获取的经核实要素位置对本数据集进行更新。此外，本数据集的几何要素已与"雅加达航道（Waterways in Jakarta）"图层中的河流、运河与溪流线要素进行空间吸附匹配，以实现位置重合。空间吸附的容差距离不超过110米。源数据中超出该容差阈值的要素已被移除；需注意，本数据集并非印度尼西亚雅加达境内所有水泵与防洪闸门的完整清单。本数据集采用WGS 84 / UTM 48S带南幅（EPSG:32748）投影坐标参考系。本数据集可用于构建表征印度尼西亚雅加达水文基础设施网络的有向图与无向图，适配网络分析需求。