Developer's Corner

GeoNB Map Services

Most of the data hosted by GeoNB is available as a map service. When data is available as a map service it can be accessed over the Internet when the data is required. It is not necessary to download a copy of the data to make use of it. GeoNB utilizes ESRI ArcGIS Server and makes data available as ArcGIS Server map services. GeoNB uses dynamic map services and tile cached map services. A current list of GeoNB map services can be browsed in the GeoNB REST services directory. Here is a guide on using the REST services directory.

Lidar Data

Map client software

The GeoNB map services can be used by several ESRI map clients. Using these map clients it is possible to connect directly to the GeoNB Servers to view and query the GeoNB maps:

ArcMap and ArcCatalog
ArcGIS Explorer Desktop (free)
ArcGIS Explorer Online (free - requires Microsoft Silverlight)
ArcGIS Online (free)
ArcGIS for AutoCAD (free plugin for AutoCAD software)
ArcGIS for Smartphones and Tablets

Instructions for connecting to the GeoNB Servers:

Software Development

ESRI provides several web APIs (application programming interfaces), ADFs (application developer frameworks), and SDKs (software development kits) for ArcGIS Server. The web APIs and ADFs can be used to incorporate GeoNB map services and GIS functionality into your own website or web application:

The following SDKs can be used to develop mobile applications for smartphones and tablets:

ArcGIS Runtime SDKs for Smartphones and Tablets

Code Galleries

ESRI maintains code galleries where users can freely copy or contribute code samples:

GeoNB Coordinate Transformation Service

The GeoNB Coordinate Transformation Service (CTS) is a REST web service for the transformation of coordinates in New Brunswick. The GeoNB CTS can be accessed in two ways:

It can be accessed with a web browser through a web based user interface. There is a downloadable user guide in PDF format for the GeoNB CTS web based user interface.
It can be accessed programmatically through a REST interface.

GeoNB CTS REST interface

The REST Transformation Web Service (TransformWS) is accessed through a HTTP GET request. The TransformWS is a .NET service written in C#. Parameter values are extracted from the GET request parameters. The transformation is performed by ArcGIS Server through a SOAP request to the Geometry service. Results from the TransformWS are returned as an XML document.

Usage

An example HTTP request is as follows:

http://geonb.snb.ca/cts/WebServices/TransformWS/Transform.svc/Transform?inWKID=4122&outWKID=2200&coordinates=-66,45

Resulting in the following returned XML:

<TransformResponse>
  <Value>
    <Coordinate>
      <X>339426.535</X>
      <Y>633408.821</Y>
    </Coordinate>
   </Value>
</TransformResponse>

inWKID=4122 – The well-known id (EPSG code) of the input coordinate system
outWKID=2200 - The well-known id (EPSG code) of the output coordinate system
coordinates=-66,45 – The comma separated list of coordinates to be transformed.

http://geonb.snb.ca/cts/WebServices/TransformWS/TransformWS.wsdl

WKID (EPSG code)	Datum	Map Projection
5588	NAD 1927	New Brunswick Stereographic Double
26719	NAD 1927	UTM Zone 19T
26720	NAD 1927	UTM Zone 20T
4267	NAD 1927	Geographic (latitude and longitude)
2200	ATS 1977	New Brunswick Stereographic Double
2219	ATS 1977	UTM Zone 19T
2220	ATS 1977	UTM Zone 20T
4122	ATS 1977	Geographic (latitude and longitude)
2953	NAD 1983 (CSRS)	New Brunswick Stereographic Double
2960	NAD 1983 (CSRS)	UTM Zone 19T
2961	NAD 1983 (CSRS)	UTM Zone 20T
4617	NAD 1983 (CSRS)	Geographic (latitude and longitude)

OGC Services

The Open Geospatial Consortium (or OGC) is an international voluntary consensus standards organization, established in 1994. In the OGC, more than 400 commercial, governmental, nonprofit and research organizations worldwide collaborate in a consensus process encouraging development and implementation of open standards for geospatial content and services, GIS data processing and data sharing. GeoNB does not currently offer OGC services, however, some GeoNB map services may be available as an OGC WMS (web map service) in the future.