CanVec digital topographical dataset of an area represented according to the National Topographic System (NTS).
Purpose:
CanVec aims to provide a standardized and up to date representation of topographical phenomena for the entire Canadian landmass.
Supplemental Information:
This product is subject to discrepancies detection process. A discrepancy is defined as any deviation of dataset (or metadata) from the product's Standards and Specifications. For information on detected discrepancies refer to the discrepancy section for this product on host Web portal.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date:
1960
Ending Date:
2000-08
Currentness Reference:
ground condition
Status:
Progress:
Complete
Maintenance and Update Frequency:
As needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate:
-115
East Bounding Coordinate:
-114
North Bounding Coordinate:
71.25
South Bounding Coordinate:
71
Keywords:
Theme:
Theme Keyword Thesaurus:
GCMD
Theme Keyword:
Earth Science > Human Dimensions > Infrastructure > Cultural Features
Theme Keyword:
Places of Interest
Theme Keyword:
Earth Science > Human Dimensions > Infrastructure > Buildings
Theme Keyword:
Earth Science > Land Surface > Topography > Topographical Relief
Theme Keyword:
Earth Science > Human Dimensions > Infrastructure > Electricity
Theme Keyword:
Earth Science > Land Surface > Topography > Contours
Theme Keyword:
Earth Science > Biosphere > Vegetation
Theme Keyword:
Toponymy/Place Names
Theme Keyword:
Earth Science > Land Surface > Land Use/Land Cover
Theme Keyword:
Earth Science > Hydrosphere > Surface Water > Wetlands
Theme Keyword:
Earth Science > Land Surface > Topography > Landforms
Theme Keyword:
Earth Science > Land Surface > Topography > Terrain Elevation
Theme Keyword:
Earth Science > Human Dimensions > Boundaries > Administrative Divisions
Theme Keyword:
Earth Science > Human Dimensions > Infrastructure > Pipelines
Theme Keyword:
Buildings and Structures
Theme Keyword:
Energy
Theme Keyword:
Earth Science > Human Dimensions > Infrastructure > Transportation
Theme Keyword:
Relief and Landforms
Theme Keyword:
Industrial and Commercial Areas
Theme Keyword:
Hydrography
Theme Keyword:
Earth Science > Human Dimensions > Infrastructure > Communications
Theme Keyword:
Water Saturated Soils
Theme Keyword:
Administratives Boundaries
Place:
Place Keyword Thesaurus:
GCMD
Place Keyword:
087H03
Place Keyword:
Continent > North America > Canada > Northwest Territories
Access Constraints:
None
Use Constraints:
Data are subject to the GeoGratis Licence Agreement for Unrestricted Use of Digital Data.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization:
Centre for Topographic Information - Sherbrooke
Contact Person:
Customer Support Group
Contact Address:
Address Type:
mailing and physical
Address:
2144, King Street West, Suite 010
City:
Sherbrooke
State or Province:
Quebec
Postal Code:
J1J 2E8
Country:
Canada
Contact Voice Telephone:
+01-819-564-4857 / 1-800-661-2638 (Canada and USA)
- Conceptual Consistency The rules of the CanVec conceptual schema are all recorded and validated in the source database containing the CanVec product. This approach ensures the conceptual consistency between the conceptual schema and the CanVec product.
- Domain Consistency The domain of values included in the Feature catalogue are all recorded and validated in the source database containing the CanVec product. This approach ensures the domain consistency between the Feature catalogue and the CanVec product.
- Format Consistency The use of well-established commercial software to generate distribution formats ensures format consistency for CanVec product distribution.
- Topological Consistency Topological relationships between (and within) entities are all recorded and validated in the source database for each CanVec dataset. This approach ensures topological consistency between the Feature catalogue and the CanVec product.
Completeness Report:
- Commission The data quality assessment (including completeness and thematic accuracy) is directly performed during the data production process. The validation method applied depends on the data source used. CanVec data come from 2 different sources: GeoBase initiative (ex: National Road Network (NRN) data) and Natural Resources Canada digital topographic data.
For GeoBase initiative data, data quality is ensured by the producer (and partner). The validation mechanism used may vary from one partner to another.
For Natural Resources Canada data, during data inspection, datasets are produced into distinct batches. A few datasets are selected from each batch and inspected in order to check their contents and compare them to a data source used in production or another independent source. If the percentage of error detected is less than 5 %, then all datasets in the batch are normally considered acceptable.
- Omission The methodology describe to evaluate the "Commission" is also applied to verify the omissions within the CanVec product.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report:
The CanVec product comes from the Geospatial Database (GDB) which is built from multiple data sources. The dataset horizontal positional accuracy assessment is related to these data sources. However, the overall dataset horizontal positional accuracy cannot be assessed. The maximum and the minimum horizontal accuracy values extracted from all sources in the dataset are provided when available.
Maximum horizontal positional accuracy of the data source in meters.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report:
The CanVec product comes from the Geospatial Database (BDG) which is built from multiple data sources. The dataset vertical positional accuracy assessment is related to these data sources. However, the overall dataset vertical positional accuracy cannot be assessed. The maximum and the minimum vertical accuracy values extracted from all sources in the dataset are provided when available.
Maximum vertical positional accuracy of the data source in meters.
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator:
Government of Canada, Natural Resources Canada, Earth Sciences Sector, Mapping Information Branch, Centre for Topographic Information - Sherbrooke
Publication Date:
Unpublished material
Title:
087H03
Edition:
3.0
Series Information:
Series Name:
Geospatial Database (GDB)
Issue Identification:
3.0
Type of Source Media:
disc
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date:
1960
Ending Date:
2000-08
Source Currentness Reference:
ground condition
Source Citation Abbreviation:
BDG-087H03-3.0
Source Contribution:
Source used to create the product (dataset)
Process Step:
Process Description:
Creation of CanVec product.
The CanVec product is created from the Geospatial Database (GDB). The GDB is a corporate data warehouse containing mainly many types of Canadian vector topographical data. The BDG is managed and maintained by Natural Resources Canada.
Main transformation applied to the GDB source data when creating CanVec product:
- Selection of a subset of entities The GDB is composed of more than a hundred entities and a subset (about sixty) of topographical features is selected to be a part of CanVec product. The CanVec Feature Catalogue identifies the complete list of entities in CanVec product.
8:30 AM to 12:00 PM and from 1:00 PM to 4:30 PM (Eastern Time)
Metadata Standard Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version:
FGDC-STD-001-1998
Metadata Use Constraints:
Only the English version of the metadata XML file is valid according to XML schema (W3C) as defined by FGDC (http://www.fgdc.gov). French version of the metadata XML file is not valid as it does not always respect domain values for all fields which are sometimes only available in English. The French version is issued mainly for display purposes. User must ensure to validate metadata against the XML schema English version.