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Figure 13 Example of data retrieval with user-defined boundaries

Description

Figure 13 is a graphic representation of the information that is used to create user-defined boundaries. Two user-defined boundaries are shown and are represented by thick grey lines. Each of these boundaries includes partial and complete dissemination blocks.

The illustration is made up of a fictional grouping of streets and dissemination blocks. Dissemination blocks appear as polygons. Each block contains block-face representative points, which are represented by a small 'x' and are centred on the inside of each block-face. Each block also contains a dissemination block representative point located in the centre of the block, which is represented by a large, bolded plus sign(+).

In the bottom right quadrant, two dissemination blocks are crossed diagonally by a census subdivision boundary. In order to respect the dissemination area geography, the CSD boundary splits each of the dissemination blocks that it crosses, thus creating two dissemination blocks out of one. Each one of these dissemination blocks contains a dissemination block representative point located in the centre of the dissemination block.

Most dissemination blocks in this diagram also contain a series of small polygons that represent dwellings, shaded light grey or dark grey. Dwellings that are shaded light grey represent those that are excluded from the data retrieval since their block-face representative point falls outside of the user-defined area. Those that are shaded dark grey represent dwellings that are included in the data retrieval since their block-face representative point falls within the user-defined area.

Below the figure is a legend which demonstrates the symbols used in the figure to represent block-face representative points, dissemination block representative points, the census subdivision boundary and a user-defined boundary.

For more information on this figure, please contact Statistics Canada at 1-800-263-1136.

Source: Statistics Canada, 2011 Census of Population.

Figure 13 Example of data retrieval with user-defined boundaries
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