Vector grid system for a Quebec spatial data infrastructure
The vector grid system provides a spatial and statistical infrastructure that allows the integration of environmental and socio-economic data. Its exploitation allows the crossing of different spatial data within the same grid units. Project results obtained using this grid system can be linked more easily. This grid system forms the geographic and statistical infrastructure of the [Southern Quebec Land Accounts] (https://statistique.quebec.ca/fr/document/comptes-des-terres-du-quebec-meridional-regions-administratives-et-provinces-naturelles) of the Institut de la Statistiche du Québec (ISQ). It forms the geospatial and statistical context for the development of ecosystem accounting in Quebec. With the aim of improving the vector grid system and the Southern Quebec Land Accounts and better anticipating the future needs of users, we would like to be informed about their use (scope, use objectives, territory, association with other products, etc.). You can write to us at firstname.lastname@example.org . This grid system allows the spatial integration of various data relating, for example, to human populations, the economy, or terrain characteristics. The ISQ wishes to encourage the use of this system in projects that require the integration of several data sources, the analysis of this data at different spatial scales, and the monitoring of this data over time. The fixed geographic references in the grids simplify the compilation of statistics according to different territorial divisions and facilitate the monitoring of changes over time. In particular, the grid system promotes consistency of data at the provincial level. The spatial intersection of the grid and the spatial data layer to be integrated makes it possible to transfer the underlying information of the layer within each cell of the grid. In the case of the Southern Quebec Land Accounts, the spatial intersection of the grid and each of the two land cover layers (decades of the 1990s and the 2000s) made it possible to report the dominant cover within each grid cell. The game of [matrix files of the Southern Quebec Land Accounts] (https://www.donneesquebec.ca/recherche/fr/dataset/comptes-des-terres-du-quebec-meridional-changement-de-la-couverture-terrestre) is the result of this intersection. Characteristics: The product includes two vector grids: one formed of cells of 1 km² (or 1,000 m on a side), which covers all of Quebec, and another of cells of 2,500 m² (or 50 m on a side, or a quarter of a hectare), which fits perfectly into the first and covers Quebec territory south of the 52nd parallel. Note that the nomenclature of this system, designed according to a Cartesian plan, was developed so that it would be possible to integrate cells with finer resolutions (up to 5 meters per side). Technically, the 50 m grid is divided by MRC or by part of MRC (312 parts) in order to avoid exceeding three million cells per grid part and thus facilitate geospatial processing. This grid includes a total of approximately 350 million cells or 875,000 km2. Format: File geodatabase (ESRI) Attribute information for 50 m cells: - unique cell code (ID_m50); - geographic code of the municipality of June 2017 (CO_MUN_2017); - code of the natural region of the Quebec ecological reference framework (CERQ_NV2); - cover class codes for the beginning (t0) and the end (t1) of the period (CL_COUV2) T00 and CL_COUV_T01). Complementary entity classes: * index of the parts of the grid; * breakdown of municipalities, MRC and administrative regions as of June 2017 (Source: System on administrative divisions [SDA] of the Ministry of Energy and Natural Resources [MERN]); * breakdown of CERQ level 2 (Source: Ministry of the Environment and the Fight against Climate Change [MDDELCC]). Geospatial processes delivered with the grid: + ModelBuilder ArcGIS allowing the spatial intersection and selection of the dominant value of the geographic layer to populate the grid; + ModelBuilder allowing the statistical compilation of results according to different breakdowns. Additional information on the grid in the report [Southern Quebec Land Accounts] (https://statistique.quebec.ca/fr/fichier/comptes-des-terres-du-quebec-meridional-edition-revisee.pdf#page=46) published in October 2018 (p. 46). View the results of the Southern Quebec Land Accounts on the [interactive map] (https://statistique.quebec.ca/cartovista/comptes_terres/index.html) of the Institut de la Statistiche du Québec.This third party metadata element was translated using an automated translation tool (Amazon Translate).
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- Publisher - Current Organization Name: Government and Municipalities of Québec
- Licence: Creative Commons 4.0 Attribution (CC-BY) licence – Quebec
Data and Resources
Vector grid system - compressed FGDB formatFGDB/GDBFrench dataset FGDB/GDB
Vector grid system - Geopackage formatGPKGFrench dataset GPKG
Original metadata (https://www.donneesquebec.ca)HTMLFrench dataset HTML
|Vector grid system for a Quebec spatial data infrastructure|
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