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Earth Sciences SectorNatural Resources Canada
Slide 1
18 Apr 2023
http://atlas.gc.ca
Atlas of CanadaAtlas of Canada6th Edition6th Edition
Gazetteer Gazetteer ServiceService
& Find a Place & Find a Place ApplicationApplication
The Atlas of Canada
Earth Sciences SectorNatural Resources Canada
Slide 2
18 Apr 2023
OverviewOverview
• Background – Who we are?
• Canada’s Geographical Names (CGNS)
• Feature Name Tagging
• Gazetteer Service
• Find a Place Application
• Find a Place Next Steps
• Questions
Earth Sciences SectorNatural Resources Canada
Slide 3
18 Apr 2023
The Atlas of Canada The Atlas of Canada Mission StatementMission Statement
• The Atlas of Canada provides authoritative, current and accessible geographic information products at a national level. Working with partners, the Atlas facilitates the integration and analysis of diverse data in order to increase overall knowledge about Canada.
Earth Sciences SectorNatural Resources Canada
Slide 4
18 Apr 2023Canadian Geographical Names Canadian Geographical Names
ServiceService
• A distributed toponymic data service for the CGDI operated by the Geographical Names Section
• The purpose is to deliver a national view of Canada’s geographical names into the standards and technology framework of the CGDI
• The Canadian Geospatial Data Infrastructure (CGDI) is the technology, standards, access systems and protocols necessary to harmonize all of Canada’s geospatial data bases, and make them available on the internet. CGDI is facilitated by GeoConnections
Earth Sciences SectorNatural Resources Canada
Slide 5
18 Apr 2023
Feature TaggingFeature Tagging
• 1:7.5million and 1:1million scales
• Statistical framework: provinces, cities, towns, villages, hamlets, municipalities, Indian reserves
• Islands and island groupings
• Hydrology: rivers and lakes
Earth Sciences SectorNatural Resources Canada
Slide 6
18 Apr 2023
Tagging ChallengesTagging Challenges
• No control over the structure and content of the names database
• Hierarchies
• Relationships between framework layers
• Duplicate names for the same feature - Pan-Canadian names or cross provincial names
• Time Stamps
• Features with fuzzy boundaries – bays, capes
• Data tagged at more than one scale
Earth Sciences SectorNatural Resources Canada
Slide 7
18 Apr 2023
WFSAtlas 1Mfeatures
WFSConcise Gazetteer
Records
CGDIGazetteer Service
request
response
XMLdocument
Client
CGDI Gazetteer ServiceCGDI Gazetteer Service
The CGDI Gazetteer Service performs ‘on the fly’ linking of toponymy to feature data.
Earth Sciences SectorNatural Resources Canada
Slide 8
18 Apr 2023
ConciseGazetteer
User (human) selects place nameof interest. Clicks on Go.User enters place feature.
Find a PlaceDatabase (FAPD)
Find a Place Find a Place ApplicationApplication
Earth Sciences SectorNatural Resources Canada
Slide 9
18 Apr 2023
AddingAddingThematicThematicData Data
Earth Sciences SectorNatural Resources Canada
Slide 10
18 Apr 2023
• All official names in Canada are stored in the Geographical Names Section of Canada database (CGNDB).
• Each official name (place or physical feature) is assigned a unique identifier, e.g. Pictou County –CBDUD.This identifer is used to obtain the feature extent from the WFS, based on the official name queried.
• This unique identifier is the primary key
that relates the tables in the Find a Place
Database (FAPD) together.
• Each table represents a feature type
(e.g. river, census division) which contains
the thematic attribute information from
the Atlas of Canada database. The thematic
data is derived from Atlas thematic shapefiles.
Find a Place DatabaseFind a Place Database
Earth Sciences SectorNatural Resources Canada
Slide 11
18 Apr 2023
• Content Perspective:
• Add secondary names. Secondary names are non-official names, such as health districts, ecozones, etc.
• Resolve issues of labelling/symbology.
• Add more thematic layers, e.g. drainage
basins.
• Eventually, allow users to locate any place/feature on a thematic map.
• Locate places on different and appropriate scales, such as the 1: 1 million, and possibly topo-maps (1:250 000/1:50 000).
• Continually add more thematic data to FAPD.
Find a Place Next Steps ...Find a Place Next Steps ...
Earth Sciences SectorNatural Resources Canada
Slide 12
18 Apr 2023
L’Atlasdu Canada
Atlasof Canada
The
http://atlas.gc.cahttp://atlas.gc.ca
Come visit !Come visit !