Figure 11 is a graphical representation of an example of a census agglomeration (CA) that has merged with a census metropolitan area (CMA). A fictional grouping of census subdivisions (CSDs) that make up a CMA are shown as shaded polygons.
The polygons that make up the original CMA are shaded dark grey. Inside this grouping is a polygon shaded with horizontal and vertical lines that represents the core of the CMA. A smaller polygon shaded with vertical, varied lines also exists in this grouping that represents a smaller population centre within the CMA, known as fringe.
Those polygons that make up the CA which had merged with the CMA are shaded light grey. Inside this grouping is a polygon shaded with diagonal lines and dots that represents the secondary core of the CMA. This was formerly the core of the CA.
A thick black line outlines the perimeter of all the CSDs to identify the boundary of the CMA.
An arrow outside the boundary of the CMA extends from the dark-shaded polygons to the light-shaded polygons to represent the total employed labour force living in the CMA and working in the CA (3,150). Another arrow outside the boundary extends from the light-shaded polygons to the dark-shaded polygons to represent the total employed labour force living in the CA and working in the CMA (350).
An equation is shown under the second arrow to illustrate how the total percentage commuting interchange between the CA and CMA is calculated in this example. The sum of these two populations, 3,500, is divided by the resident employed labour force of the CA (10,000) and multiplied by 100 to equal a 35% interchange.
A legend appears below the figure to identify the symbols used in the figure for representing the area of the CMA, area of the CA, core, secondary core, fringe, CSD boundaries and the new boundary of the CMA.
For more information on this figure, please contact Statistics Canada at 1-800-263-1136.
Source: Statistics Canada, 2011 Census of Population.