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Statistical area boundary file (CARTLIB)
Principal investigator: Statistics Canada
Codebook by University of Toronto Data Library Service
27/09/1995
based on:
CARTLIB : a library of census statistical area boundaries
for computer mapping : technical details./ by Russell S. Page
Ottawa, Ont.: Statistics Canada, Census Division,
August 31, 1972.
11. Introduction
CARTLIB is a library of the boundary locations of census divisions
and census tracts in a format usable by computer mapping programmes.
The locations of the boundaries are approximate only, because they
are intended solely for graphic display and the shapes have been
generalized into polygons of from 3 to 98 sides. Each boundary is
defined by the X-Y co-ordinates of each vertex in a clockwise
sequence, with the first vertex (the most northern one usually) being
repeated at the end.
The co-ordinates of the vertices of the census divisions are
determined by an arbitrary rectangular grid. Southern Ontario and
Quebec are part of an inset of the main map of Canada, at a larger
scale. The co-ordinates of the census tract polygons conform to
the Universal Transverse Mercator Grid (6 degree zones) as printed
on the National Topographical Series of maps. It should be noted,
however, that because Calgary and Saint John, N.B. CMAs are located
in two UTM zones, the co-ordinates have been converted to the grid
of one zone. It is recommended that users first use the base maps at
the following scales to get an idea of the best scale for their
requirements: .006 for census divisions and .0016 for census tracts
(this is the ratio of units on the output map to units in the file).
12. Land area file : record layout
Field Size Columns Type Description
1 2 1 - 2 A Type of statistical area:
where: CD - census division
CT - census tract
2 6 3 - 8 I Statistical area code
The Census geographic code of the
area concerned.
Census division code - 4 digits
Census tract code:
digits 1-3 - CMA/CA code
digits 4-6 - CT code
See the Official Lists for codes
and areas. Chicoutimi-Jonquiere
are one unofficial tract, and are
not included.
3 1 9 A * if area is unofficial
An asterisk for unofficial census
tracts.
4 11 10 - 20 A Blank
5 10 21 - 30 F Land area in square miles
The land area in square miles. For
convenience, every area has two
decimal places, but the census
divisions were measured to the
nearest square mile. These unofficial
land areas were measured from
topographic maps with a planimeter.
13. Boundary file : record layout
Field Size Columns Type Description
1 6 1 - 6 A Statistical area code
The Census geographic code of the
area concerned.
Census division code - 4 digits
Census tract code:
digits 1-3 - CMA/CA code
digits 4-6 - CT code
See the Official Lists for codes
and areas. Chicoutimi-Jonquiere
are one unofficial tract, and are
not included.
2 2 7 - 8 I Sequence of polygons in
statistical area
An integer indicating the sequence
of polygons needed to delineate a
statistical area, for the second
and subsequent polygons if required
(this rarely occurs).
3 1 9 A * if area is unofficial
An asterisk here indicates an
unofficial census tract.
4 1 10 A 'A' for first record of each boundary
An 'A' here indicates the first
vertex of a polygon.
5 2 11 - 12 I Sequence number of records in boundary
An integer indicating the sequence
of vertices in each polygon.
6 8 13 - 20 F X co-ordinate of boundary vertex
The X co-ordinate is a decimal number.
7 10 21 - 30 F Y co-ordinate of boundary vertex
The Y co-ordinate is a decimal number.
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Appendix 1: Census metropolitan area (CMA) and Census agglomerate (CA)
codes
CMA name Code Frequency
Calgary 1 77
Edmonton 3 88
Halifax 4 48
Hamilton 5 109
Kitchener 6 45
London 7 59
Montreal 8 579
Ottawa-Hull 10 120
Quebec 11 100
Regina 12 29
St. Catharines-Niagara 13 53
St. John's 14 29
Saint John 15 43
Saskatoon 16 22
Sudbury 19 30
Thunder Bay 20 25
Toronto 21 452
Vancouver 23 182
Victoria 24 43
Windsor 25 56
Winnipeg 26 106
CA name Code Frequency
Brantford 32 16
Guelph 37 14
Kingston 38 18
Oshawa 41 22
Peterborough 42 16
Sarnia 43 18
Sault Ste. Marie 44 19
Sherbrooke 46 20
Trois-Rivieres 48 21