Walcha Road Segment 3D May 2024
收藏资源简介：
Access APIMetadata Portal Metadata InformationContent TitleWalcha Road Segment 3D May 2024Content TypeScene Layer/Scene Layer PackageDescriptionNSW Transport Theme Road Segment is a line feature class representing a section of road having common attributes and terminating at its physical and or at an intersection with another road at the same grade (same level). Its position is determined by the methodology used to input into the Topographic Database. Common methods of input include GPS, traced from the cadastre or traced from an orthorectified image.Data included in Road Segments includes:Vehicular TrackPathwayContinuity LineStandard Road On-off RampDual CarriagewayInitial Publication Date01/05/2024Data Currency01/05/2024Data Update FrequencyOtherContent SourceData provider filesFile TypeScene Layer Package (*.slpk)AttributionData Theme, Classification or Relationship to other DatasetsTransport Theme of the NSW Foundation Spatial Data FrameworkAccuracyThe dataset maintains a positional relationship to, and alignment with, the Lot and Property digital datasets. The Lot and Property data was captured by digitising the best available cadastral mapping at a variety of scales and accuracies, ranging from 1:500 to 1:250 000 according to the National Mapping Council of Australia, Standards of Map Accuracy (1975). Therefore, the position of the feature instance will be within 0.5mm at the map scale for 90% of the well-defined points. That is 1:500 = 0.25m, 1:2000 = 1m, 1:4000 = 2m, 1:25000 = 12.5m, 1:50000 = 25m and 1:00000 = 50m. A program of positional upgrade (accuracy improvement) is currently underway. Feature heights have been derived from LiDAR elevation sources including 1m and 2m DEMS. The data used to create the DEMs have an accuracy of 0.3m (95% Confidence Interval) vertical and 0.8m (95% Confidence Interval) horizontal. The features vertical accuracy is also a function of its horizon.Spatial Reference System (dataset)WGS84Spatial Reference System (web service)EPSG:4326WGS84 Equivalent ToGDA2020Spatial ExtentContent LineageData ClassificationUnclassifiedData Access PolicyOpenData QualityTerms and ConditionsCreative CommonStandard and SpecificationData CustodianSpatial Services | Department of Customer ServicesPoint of ContactSS-SDS@customerservice.nsw.gov.auData AggregatorSpatial Services | Department of Customer ServicesData DistributorSpatial Services | Department of Customer ServicesAdditional Supporting InformationOpen Geospatial Consortium (OGC) implemented and compatible for the consumption by common GIS platforms. Available as either cache or non-cache, depending on client use or requirement.TRIM Number
访问API元数据门户元数据信息 内容标题：沃尔查路段3D 2024年5月 内容类型：场景图层/场景图层包（Scene Layer Package） 描述：新南威尔士州交通主题道路路段为一类线要素类，指代具备统一属性、以物理端点或同等级别（同一平面）与其他道路的交叉口作为终止点的道路区段。其点位由输入至地形数据库的方法确定，常见输入方式包括GPS采集、从地籍数据描摹或从正射影像中矢量化提取。道路路段包含的数据类型包括：机动车道、步道、连续线、标准道路进出口匝道、双向车道。 首次发布日期：2024/05/01 数据现势性：2024/05/01 数据更新频率：其他 内容来源：数据提供方文件 文件类型：场景图层包（*.slpk） 归因：数据主题、分类及与其他数据集的关联：属于新南威尔士州基础空间数据框架交通主题 精度说明：本数据集与宗地与房产数字数据集保持位置匹配与对齐关系。宗地与房产数据依据澳大利亚国家测绘委员会1975年发布的《地图精度标准》，通过数字化多比例尺、多精度范围（1:500至1:250000）的最优地籍测绘图采集得到。因此，90%的明确界定要素点位的位置误差，在对应比例尺下不超过0.5毫米，具体换算如下：1:500对应0.25米、1:2000对应1米、1:4000对应2米、1:25000对应12.5米、1:50000对应25米、1:100000对应50米。目前正实施点位精度提升项目。要素高程源自激光雷达（LiDAR）高程数据源，包括1米与2米分辨率的数字高程模型（DEM）。用于生成DEM的数据垂直精度为0.3米（95%置信区间），水平精度为0.8米（95%置信区间）。要素的垂直精度同时受其视域范围影响。 数据集空间参考系：WGS84 Web服务空间参考系：EPSG:4326，与WGS84等效的坐标系为GDA2020 空间范围： 数据谱系： 数据分类：未分类 数据访问政策：开放访问 数据质量： 条款与条件：知识共享（Creative Common） 标准与规范： 数据保管方：空间服务部 | 新南威尔士州客户服务部 联系人：SS-SDS@customerservice.nsw.gov.au 数据聚合方：空间服务部 | 新南威尔士州客户服务部 数据分发方：空间服务部 | 新南威尔士州客户服务部 附加支持信息：符合开放地理空间联盟（OGC）标准，可兼容主流地理信息系统（GIS）平台使用；可根据客户端使用需求选择缓存或非缓存模式。TRIM编号
