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\u00a0Access API

NSW Positioning Theme Survey Mark GDA94 multiCRS

MultiCRS service - supporting requests in multiple Coordinate Reference Systems -\u00a0Information Sheet

A new series of \u2018multiCRS\u2019 web services have been published to support GDA2020. \u00a0These new \u2018multiCRS\u2019 services:

\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0have a spatial reference of GDA2020

\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0support alignment with GDA2020, GDA94 or [WGS 84-aligned-to-GDA2020] GIS environments,
using built-in server-side transformations:

o\u00a0\u00a0\u00a0\u00a0GDA94 < NTv2-CPD > GDA2020

o\u00a0\u00a0\u00a0\u00a0GDA94 < NTv2-CPD > WGS 84 aligned to GDA2020

o\u00a0\u00a0\u00a0\u00a0GDA2020 < NULL > WGS 84 aligned to GDA2020


\u00a0 \u00a0 \u00a0Note: ESRI software will automatically align by transforming from the\u00a0sourceSpatialReference\u00a0(GDA94).
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Other software may need to set client-side transformations from the\u00a0SpatialReference\u00a0(GDA2020).

\u00a0 \u00a0 \u00a0Note:\u00a0Client-side transformation(s) can be used to over-ride these default transformations.

The original [WGS 84-aligned-to-GDA2020] is still available, without the \u2018multiCRS\u2019 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.



This service provides\u00a0GDA94\u00a0coordinates, heights and related information for NSW survey marks that form the official State control survey network (as reported in SCIMS). 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:

\u00a0
The mark type is represented using various shapes and the accuracy of the mark (both vertical and horizontal) is communicated by the colour.\u00a0

This web service allows users to easily integrate survey control mark data from SCIMS into Open Geospatial Consortium (OGC) compliant spatial platforms and applications.\u00a0

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:\u00a0

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.

Metadata

Type\u00a0\u00a0

Esri Feature Service\u00a0\u00a0

Update Frequency\u00a0\u00a0

As required\u00a0 \u00a0

Contact Details\u00a0\u00a0

Contact us via the\u00a0Spatial Services Customer Hub

Relationship to Themes and Datasets\u00a0\u00a0

Positioning Theme of the Foundation Spatial Data Framework (FSDF), Survey Control Information Management System (SCIMS)

Accuracy\u00a0

The dataset maintains a positional relationship to, and alignment with, the Lot and Property digital datasets. This dataset 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 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 1:100000 = 50m. A program of positional upgrade (accuracy improvement) is currently underway.\u00a0\u00a0

Source Reference System\u00a0
(dataset)\u00a0

Geocentric Datum of Australia 1994 (GDA94), Australian Height Datum (AHD)\u00a0\u00a0

Spatial Reference \u202f\u202f\u202f\u00a0
(web service)\u00a0\u00a0

Geocentric Datum of Australia 2020 (GDA2020), Geographic 2D\u00a0\u00a0

WGS 84 Equivalent To\u00a0

GDA2020\u00a0\u00a0

Spatial Extent\u00a0\u00a0

Full state\u00a0\u00a0

Standards and Specifications\u00a0\u00a0

Open 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.\u00a0\u00a0\u00a0The web service is built as per Spatial Services project specification.

Distributors\u00a0\u00a0

Service Delivery, DCS Spatial Services
346 Panorama Ave Bathurst NSW 2795

Dataset Producers and Contributors\u00a0\u00a0

Survey Operations, DCS Spatial Services
346 Panorama Ave Bathurst NSW 2795













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