Proximity Measures - StatsCan (Postal Code...
Statistics Canada and the Canadian Mortgage and Housing Corporation have developed a set of metrics on the proximity of various urban amenities to all dissemination blocks in Canada. There are 10 measures of proximity and a composite indicator that combines some of the proximity measures.The measures are based on a simple gravity model that accounts for the distance between a reference dissemination block (DB) and all the DBs in which the service is located (within a given distance) and the size of the services. The measure accounts also for the presence of services within the DB of reference.All measures, except public transit, are based on network distances between the centroids of dissemination blocks (as opposed to straight line distances). For some measures a walking network is used while for other measures a driving network is used. For public transit, the walking network distance is between the centre of a dissemination block and any public transit stop within a given range. The size of the service is captured by total employment or total revenue of the service, or more simply, the presence of points of access to the service within a given distance. The measures are released as a normalized index value, meaning that the values resulting from computations were converted to a scale from 0 to 1, where 0 indicates the lowest proximity and 1 the highest proximity in Canada. The values are normalized at the national level in order to retain as much detail as possible. This allows for more intricate analyses to be conducted on more granular geographies. Dissemination blocks with no value are those with no service within a given distance.Some measures are not available for all DBs, as the input data are not always made readily available at the desired geographic level. As the number of authoritative open data sources increases, a trend in recent years, future iterations of the proximity measures will have more comprehensive coverage spatially.More information is available from Statistics Canada. See the link provided in Supporting Documents, below.CANUE staff assigned these measures to single-link DMTI postal codes. All postal codes within a single dissemination block have the same values.
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Informations additionnelles
| Champ | Valeur |
|---|---|
| Dernière modification de la donnée | 18 septembre 2023 |
| Dernière modification de la métadonnée | 9 octobre 2023 |
| Créé le | 18 septembre 2023 |
| Format | |
| Licence | License not specified |
| Has views | False |
| Id | 64e2bd94-35eb-4ab3-b426-f4dff604788a |
| Package id | e816373b-ad09-4530-a314-b23b54a5434a |
| Position | 0 |
| State | active |