Natural Resources Canada

1
Natural Resources Canada

• WMS Implementation at
• Geomatics Canada, CTI-Sherbrooke

2
WMS Implementation at Geomatics Canada,
CTI-Sherbrooke

• Installation and data store content
• Attribute query
• Graphical output and aggregation
• Future development

3
Installation and Data Content

• Cubewerx technology implemented
• CubeServ on LINUX
• CubeStrore on Oracle and Sun/Solaris
• Availability
• 300 hits per day (without publicity)
• Trying to achieve 7/24
• Replica of NTDB 250K at CFS Victoria
• WMS address
• http//wms.cits.rncan.gc.ca/cgi-bin/cubeserv.cgi
• National Topographic Data Base - NTDB 250K
• Full content (980 NTS)
• Full NTDB dictionary (13 themes and 103 entities)
• 20 million records
• 20 Gb of data

4
Technology and Data Content

• National Topographic Data Base - NTDB 50K
• Half content (6700 NTS)
• Full NTDB dictionary (13 themes and 125 entities)
• 45 millions records
• 60 Gb of data
• Canadian Digital Elevation Data - CDED 250K
• Full content (980 NTS)
• Cells of 3 seconds
• x spacing of 32 m to 70 m
• y spacing of 93 m
• 1.4 Gb of data
• Canadian Digital Elevation Data - CDED 50K
• 10 (1183 NTS)
• Cells of 0.75 second
• x spacing of 8 m to 17 m
• y spacing of 23 m

5
Attribute Query

• We can request information about a feature
• We adapted the numeric domain of the dictionary
  as names and descriptions
• Entity 1546 gt Road / Route
• Classification 2 gt Principal / Principale
  
• Type of support 1 gt On the ground / Au sol
• Type of surface 2 gt Unpaved / Non pavée
• State of the road 1 gt Under construction / En
  construction
• The attribute information is in both official
  languages

6
Graphical Output and Aggregation

• No personalized symbology (too slow at the
  moment)
• Gif images limited to 2000 by 2000 pixels ( 4 Mb)
• WFS supports aggregate layers to accelerate the
  display (prebuild images for specific scales)
• Aggregates avoid heavy requests like
• SELECT FROM NTDB 50K
• UNION
• SELECT FROM NTDB 250K
• NTDB 50K (aggregates for 6 entities)
• NTDB 250K (aggregates for 4 entities)
• CDED 50K
• CDED 250K

7
NTDB 50K Aggregates
8
NTDB 250K Aggregates
9
CDED 50K and 250K

• CDED 50K - 3 aggregates
• 1 1M
• 1 7M
• 1 25 M
• CDED 250K - 4 aggregates
• 1 2M
• 1 10M
• 1 30M
• 1 50M

10
Future Development

• WMS - More products
• Updated road network
• Administrative boundaries
• CanImage
• Geomatics Canada is developing a WMS client
• Make requests by location (toponym and postal
  codes)
• Create and save user context or profile
• Personalize the display and symbology
• Will replace the NRCan Toporama web site
  (http//toporama.cits.rncan.gc.ca)
• WFS - Issues to resolve
• Subscription (access restriction)
• ISO 9001(traceability)
• Availability