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An administrator sets up and manages the SLIP environment by creating users and other administrators, optionally setting standards and controlling access to SLIP and Custodial Data.

Application Program Interface. A set of interfaces, methods, protocols and tools that application developers use to build or customise a software program.

Generalised term used to identify records created and stored within SLIP. Assets include maps, layers, vector tables, raster collections and rasters. An Asset Group refers to a named grouping of assets.

Data often associated with vector features and can be used to symbolise vector features. Note that attributes don't have to be visible things – they can describe things we know about the feature such as the year it was built. An attribute has a name (for example, Population) and a type (for example, Number). See Vector Features.

GME stores attributes for a vector feature in a 'vector table'. See Vector Table


Acknowledgement of the organisation that provided the data.



Tailored or built-in map that provides a “canvas” for layers when creating a map.

 Base Map.png


Official record of the ownership, extent and value of land parcels in a given area.


Expressing graphically the natural and social features of the earth. Includes features such as transportation routes, local restaurants on a map, etc.


The addition, modification or removal of anything that could have an effect on an asset in SLIP and SLIP data service. There are three (3) types of change defined as Minor, Standard and Major.

A data custodian is the organisation or person who creates, owns and provides data to SLIP. They are the authoritative, responsible managers of spatial datasets. Data custodians retain accountability of their datasets.




Used to specify a style to a layer. Specifies style attributes such as colour, line pattern and labels. Display rules and filters based on the attributes in a data source can be used to affect how vector data appears in a layer. The order of the display rules will also affect the styling of a layer.                               


A geographic information system (GIS) is a computer system designed to capture, store, manipulate, analyse, manage and present all types of spatial or geographical data.




Imagery, a type of raster data, consists of a grid of cells that cover an area of interest. Each pixel, the smallest unit of information in the grid, displays a unique attribute and can be mapped to latitude/ longitude values. Imagery data is typically acquired by satellites or aerial cameras.


A pop-up box is displayed when a user clicks on a feature in a Map. The Info Window contains the attributes about the feature and other information as defined by the data custodian. The contents of an Info Window are built from HTML that can be customised to display informative content including text and images.                                        


Visual representation of a geographic dataset in a digital map. 

A layer can be a single, styled, vector table or any number of raster collections.


The Location Information Strategy (LIS) set out to improve the use of location information, increase its awareness and sharing across Western Australian Government, private and academia organisations.

Power of Location  


In SLIP data sources become layers and layers are combined to create services. A Map is created from one or many services. Different data types such as raster or vector can be used.

Once a Map has been created and published it can be shared publically or privately with specified users.

Locate is an example of a public map generated through SLIP and provided for use and access through a dedicated website.



A mosaic contains a number of separate, small images that you can manage as a single entity. The contiguous sections are joined without masking and feathering. Also known in GME as a raster collection, a container for zero or more raster images. A raster collection may belong to zero or more layers.



The Open Geospatial Consortium is a non-profit, international, voluntary consensus standards organisation that is leading the development of standards for geospatial and location based services.

Open Geospatial Consortium Logo  


On a map, a closed shape defined by a connected sequence of x, y coordinate pairs, where the first and last coordinate pair is the same and all other pairs are unique.


End user who has a registered SLIP account and has been granted access to view /access Private Map/s and data.


A spatial data model that defines space as an array of equally sized cells arranged in rows and columns and composed of single or multiple bands. Each cell contains an attribute value and location coordinates. Unlike a vector structure, which stores coordinates explicitly, raster coordinates are contained in the ordering of the matrix. Groups of cells that share the same value represent the same type of geographic feature.

Comparing Raster and Vector Images  



The Shared Location Information Platform, known as SLIP, is a Western Australian Government initiative aimed at increasing agency use and collaboration by sharing location information through a common platform.

SLIP was developed in response to the State Government’s strategic planning framework, ‘Better Planning, Better Services’ in 2003. This framework promoted a more ’citizen-centric’ focus and the transition towards joined-up government. Part of the aim was to better utilise information and communications technology to improve service delivery to the wider community.

SLIP Logo  

A community for SLIP Developers to help to grow the knowledge base of people, developers and others to leverage, use, and build off of SLIP.!forum/slip-academy

GIS professional who leverages SLIP and APIs to build customer centric applications.

Western Australian Government Agencies (WAGA) - a high-level document that covers the understanding between Landgate and WAGAs who supply data into SLIP.

General - high-level agreement for commercial or non-WAGA Custodians who supply data into SLIP.


A tag is a text string that you apply to a data source, layer or map. Tags enable better search results for users.



Terrain, like imagery, is a type of raster data that contains topographical and bathymetry information about a geographic area. Pixel coordinates in a terrain data file can be mapped to elevation values as well as to latitude and longitude.


Third party refers to another entity or vendor developing software that is interacting with SLIP. This software is independent of SLIP and is not supported by Landgate.

A field of geoscience and planetary science comprising the study of surface shape and features of the Earth and other observable astronomical objects including planets, moons and asteroids. It is also the description of such surface shapes and features (especially their depiction in maps).




Vector data consists of the following types of geographic features:

• Geographic coordinates (points), or collections of points (multi-points)

• Sequences of connected geographic coordinates (lines), or collections of lines (multi-lines)

• Closed sequences of geographic coordinates (polygons), or collections of polygons (multi-polygons)

Each feature typically has attribute fields, such as name, street address or website URL.



Western Australian Land Information System (WALIS) drives innovative partnerships and works with business, academia and the community to make it easier to find, use and improve location information for WA.


Web Feature Service standard (WFS) provides an interface allowing requests for geographical features across the web using platform-independent calls.

The OGC Web Feature Service allows a client to retrieve and update geospatial data encoded in Geography Markup Language (GML) from multiple Web Feature Services.



A Web Map Service (WMS) is a standard protocol for serving georeferenced map images over the Internet that are generated by a map server using data from a GIS database.

The specification was developed and first published by the Open Geospatial Consortium (OGC) in 1999.



A Web Map Tile Service (WMTS) is a standard protocol for serving pre-rendered georeferenced map tiles over the Internet. The specification was developed and first published by the Open Geospatial Consortium in 2010.