NSW Positioning Theme Survey Mark GDA2020 multiCRS

Export Data Access APINSW Positioning Theme Survey Mark GDA2020 multiCRSMultiCRS service - supporting requests in multiple Coordinate Reference Systems - Information SheetA new series of ‘multiCRS’ web services have been published to support GDA2020.  These new ‘multiCRS’ services:·         have a spatial reference of GDA2020·         support alignment with GDA2020, GDA94 or [WGS 84-aligned-to-GDA2020] GIS environments,using built-in server-side transformations:o    GDA94 < NTv2-CPD > GDA2020o    GDA94 < NTv2-CPD > WGS 84 aligned to GDA2020o    GDA2020 < NULL > WGS 84 aligned to GDA2020     Note: ESRI software will automatically align by transforming from the sourceSpatialReference (GDA94).               Other software may need to set client-side transformations from the SpatialReference (GDA2020).     Note: Client-side transformation(s) can be used to over-ride these default transformations.The original [WGS 84-aligned-to-GDA2020] is still available, without the ‘multiCRS’ suffix. In due course, and allowing time for user feedback and testing, it is intended that the original service name will adopt this new multiCRS functionally.Please note that SCIMS Online is the official option for obtaining state control survey data for cadastral surveys as it offers legal traceability. SCIMS online is accessible via the Spatial portal.Metadata Portal Metadata InformationContent TitleNSW Positioning Theme Survey Mark GDA2020 multiCRSContent TypeHosted Feature LayerDescriptionThis service provides GDA2020 coordinates, heights and related information for NSW survey marks that form the official State control survey network (as reported in SCIMS). This service supports requests in multiple coordinate reference systems.This service controls the precision of numerical output in a manner that mirrors SCIMS Online available through the Spatial Services Portal.The web service provides a wealth of data on each mark, including:Mark type (Permanent Mark, State Survey Mark, etc.) Mark number Horizontal coordinates and their accuracy (class and order) Heights and their accuracy (class and order) Status of the mark (destroyed, restricted access, etc.)  The mark type is represented using various shapes and the accuracy of the mark (both vertical and horizontal) is communicated by the colour. This web service allows users to easily integrate survey control mark data from SCIMS into Open Geospatial Consortium (OGC) compliant spatial platforms and applications. Data provided by the NSW Survey Mark web service can be used in a variety of engineering and surveying applications, including but not limited to: Cadastral survey planning Flood studies and hydrographic modelling Infrastructure developmentSite calibration at construction sites Elevation modelling Preservation of survey infrastructure.The NSW Survey Mark web service gives users an alternative method to access state control survey data that can be incorporated into their GIS package without needing to log into SCIMS Online.Please note that SCIMS Online is the official option for obtaining state control survey data for cadastral surveys as it offers legal traceability. SCIMS online is accessible via the Spatial portal.Initial Publication Date24/06/2019Data Currency01/01/3000Data Update FrequencyDailyContent SourceData provider filesFile TypeMap Feature ServiceAttribution© State of New South Wales (Spatial Services, a business unit of the Department of Customer Service NSW). For current information go to spatial.nsw.gov.auData Theme, Classification or Relationship to other DatasetsNSW Positioning Theme of the Foundation Spatial Data Framework (FSDF)AccuracyThis dataset depicts the location of survey marks based on their official GDA2020 coordinates. Survey mark positional accuracy is reported in the data fields for each mark and varies from mark to mark. Over time mark accuracy will change when new observations are added, and survey adjustments are completed.For additional information, please contact us via the Spatial Services Customer HubSpatial Reference System (dataset)GDA2020Spatial Reference System (web service)OtherWGS84 Equivalent ToGDA2020Spatial ExtentFull StateContent LineageFor additional information, please contact us via the Spatial Services Customer HubData ClassificationUnclassifiedData Access PolicyOpenData QualityHigh. Methodology and accuracy standards are defined in the NSW Surveyor General’s directions.For additional information, please contact us via the Spatial Services Customer HubTerms and ConditionsCreative CommonsStandard and SpecificationOpen Geospatial Consortium (OGC) implemented and compatible for consumption by common GIS platforms. Available as either cache or non-cache, depending on client use or requirement.  Data CustodianDCS Spatial Services346 Panorama AveBathurst NSW 2795Point of ContactPlease contact us via the Spatial Services Customer HubData AggregatorDCS Spatial Services346 Panorama AveBathurst NSW 2795Data DistributorDCS Spatial Services346 Panorama AveBathurst NSW 2795Additional Supporting InformationData Dictionaries

导出数据访问APINSW定位主题测量标志GDA2020多坐标参考系服务——支持多坐标参考系统请求——信息表

现已发布一系列全新的多坐标参考系（MultiCRS）网络服务，以适配GDA2020（澳大利亚地心大地基准2020）。此类新型多坐标参考系服务具备以下特性：
· 采用GDA2020空间参考系
· 支持与GDA2020、GDA94或[适配GDA2020的WGS 84（世界大地测量系统1984）]地理信息系统（GIS）环境对接，内置服务端坐标转换功能，具体转换关系如下：
o GDA94 < NTv2-CPD > GDA2020
o GDA94 < NTv2-CPD > 适配GDA2020的WGS 84
o GDA2020 < NULL > 适配GDA2020的WGS 84

注意：ESRI软件将自动通过源空间参考系（GDA94）进行坐标转换以完成对接。其他软件则需从空间参考系（GDA2020）出发配置客户端坐标转换。
备注：可通过客户端坐标转换覆盖上述默认转换规则。

原[适配GDA2020的WGS 84]服务仍可正常使用，且未带有"multiCRS"后缀。待收集用户反馈并完成充分测试后，官方计划将原服务名称升级为具备该新型多坐标参考系功能的版本。

请注意，SCIMS Online是获取地籍测量所需州级控制测量数据的官方渠道，其具备法律溯源性。用户可通过空间门户访问SCIMS Online。

元数据门户元数据信息
内容标题：新南威尔士州定位主题测量标志GDA2020多CRS服务
内容类型：托管要素图层服务
服务描述：本服务为构成官方州级控制测量网络（源自SCIMS系统）的新南威尔士州测量标志提供GDA2020坐标、高程及相关信息。本服务支持多坐标参考系统请求。本服务对数值输出精度的控制逻辑与空间服务门户提供的SCIMS Online保持一致。

本网络服务可提供各测量标志的丰富数据，具体包括：
· 标志类型（永久标志、州级测量标志等）
· 标志编号
· 平面坐标及其精度（等级与阶数）
· 高程及其精度（等级与阶数）
· 标志状态（已损毁、限制通行等）
标志类型通过不同图形符号表示，标志的平面与高程精度则通过颜色区分。

本网络服务可帮助用户轻松将SCIMS中的测量控制标志数据集成至符合开放地理空间联盟（Open Geospatial Consortium, OGC）标准的空间平台与应用程序中。新南威尔士州测量标志网络服务提供的数据可应用于各类工程与测量场景，包括但不限于：
· 地籍测量规划
· 洪水研究与水文建模
· 基础设施建设
· 施工现场点位校准
· 高程建模
· 测量基础设施保护

新南威尔士州测量标志网络服务为用户提供了另一种获取州级控制测量数据的途径，用户可直接将该数据集成至自身GIS软件中，无需登录SCIMS Online。请注意，SCIMS Online仍是获取地籍测量所需州级控制测量数据的官方渠道，其具备法律溯源性，用户可通过空间门户访问该平台。

首次发布日期：2019年6月24日
数据现势性：3000年1月1日
数据更新频率：每日
数据来源：数据提供方文件
文件类型：地图要素图层服务
版权声明：© 新南威尔士州（空间服务部，新南威尔士州客户服务厅下属业务单元）。如需获取最新信息，请访问spatial.nsw.gov.au

数据主题、分类或与其他数据集的关联：基础空间数据框架（Foundation Spatial Data Framework, FSDF）新南威尔士州定位主题
数据精度：本数据集基于各测量标志的官方GDA2020坐标展示其点位信息。各测量标志的位置精度已在对应数据字段中注明，且不同标志的精度存在差异。随着新增观测数据与测量平差工作的完成，标志精度会随时间发生变化。如需获取更多信息，请通过空间服务客户服务中心联系我们。
数据集空间参考系：GDA2020
网络服务空间参考系：其他
WGS84等效基准：GDA2020
空间范围：全州范围
数据谱系：如需获取更多信息，请通过空间服务客户服务中心联系我们。
数据分类：非机密
数据访问政策：开放
数据质量：优秀。其方法与精度标准符合新南威尔士州测量总监的相关规定。如需获取更多信息，请通过空间服务客户服务中心联系我们。
条款与条件：知识共享（Creative Commons）
标准与规范：符合开放地理空间联盟（OGC）标准，可兼容主流GIS平台使用。可根据客户端需求选择缓存或非缓存服务模式。

数据保管方：DCS空间服务部
地址：新南威尔士州巴瑟斯特市全景大道346号，邮编2795
联系人：请通过空间服务客户服务中心联系我们
数据汇总方：DCS空间服务部
地址：新南威尔士州巴瑟斯特市全景大道346号，邮编2795
数据分发方：DCS空间服务部
地址：新南威尔士州巴瑟斯特市全景大道346号，邮编2795
附加支持信息：数据字典