1991 SKELETAL STREET NETWORK FILE USER GUIDE
Contents
1. HY Highway LI Line CH Chemin RL Ruelle AV Avenue DIRECTION A two character code identifying the direction of the feature The feature direction is not to be mistaken as being the geographic direction of a feature but the direction used within the feature s identification In most cases this field is blank The MapInfo Table Structure is NAMECharacter 20 indexed TY PECharacter 2 DIRECTION Character 2 Page 6 Statistics Canada 1991 Skeletal Street Network File User Guide 4 GLOSSARY OF TERMS Address Range The low and high address civic number Boundary A line indicating the limit or extent of an area or territory Census Agglomeration CA The general concept of a census agglomeration CA is one of a large urban area together with adjacent urban and rural areas which have a high degree of economic and social integration with that urban area A CA is delineated around an urban area called the urbanized core and having a population of at least 10 000 based on the previous census Once a CA attains an urbanized core population of at least 100 000 based on the previous census it becomes a census metropolitan area CMA Census Metropolitan Area CMA The general concept of a census metropolitan area CMA is one of a very large urban area together with adjacent urban and rural areas which have a high degree of economic and social integration with that urban area Page 7 Statistics Canada 12. Statistics Canada 1991 Skeletal Street Network File User Guide For the full definitions and additional remarks related to this term users should refer to the 199 Census Dictionary Cat No 92 301E Page 10 Statistics Canada 1991 Skeletal Street Network File User Guide 4 GLOSSARY OF TERMS CONT D Feature An entity that will be included in the Street Network File Railway A permanent way having rails which provide a track for train cars Road Refer to Street Shoreline The limit of a body of water where it touches land In the SNF the water body should on average be greater than 20 metres wide and indicated by shoreline rather than streamline Street A thoroughfare within a city or town larger than an alley or lane Page 11 Statistics Canada 1991 Skeletal Street Network File User Guide 5 SUPPLEMENTARY INFORMATION 5 1 Related Geographic Products and Services The following is a summary of other geographic products and services available from Statistics Canada CMA CA CT REFERENCE MAPS These maps show the boundaries of CSDs CMA CA parts and CTs Publications in the Census Tract Profile series contain corresponding maps for each tracted CMA or CA DIGITAL BOUNDARY FILES Digital Boundary Files are available for most levels of standard geography from the enumeration area up to the province and territory In combination with the user s appropriate software these files provide the user w
3. 1991 SKELETAL STREET NETWORK FILE USER GUIDE MapInfo Format Produced by the Geography Division Statistics Canada AUGUST 1993 This User Guide contains an overview of the 1991 Skeletal Street Network Files SSNFs as well as a brief data quality statement More details on the base files used to create the SSNFs can be obtained from the 199 Street Network File User Guide TABLE OF CONTENTS ILOVERVIEW OF THE SKELETAL STREET NETWORK FILE 0ccccccceeseeeseseneees 2 IV DATA QUALITY STATEMENT 0506 sadetssisi ates aistsatissitanieat vines easiem tani wuenroeeeoanatie 3 EMEI an he Lace E cS cla eR ele lah CoN sh a ee cae Shae ce ta 3 Positional ACc raCy na a a a a a a Tw Ae 4 JANE BEL oL TATEA E E IT TEA OANA TEE AE E EEEE ATT A E EAT TT 4 2 4 Logical Consistency 55525 ci segs es ius nea sive edca Deacon 5 DDC OPO UTC SS eos siossaids vo a a er aa lar Ges 5 ZOO ther COmsid era tins 53 opal oe feos oe vac sss oda ests soe esses 5 VITECHNICAL SPECIFICATIONS MapInfo ccscsscscssssssssecssesessessssesessesessesessecssseecsavessseeen 6 Ay GLOSSARY OF TERMS ciscaai es sacocedosssacoages6cejassesaestutusa Aa Actes A EES a aeeai eSa TEER 7 5 SUPPLEMENTARY INFORMATION 0ccccccccsccscssssessccesseseesesesecseesesecsesecsecseseeecseeseeeeseaes 12 5 1 Related Geographic Products and Services ccccccccsessesseseeseesseseeeesseeeeseceesseeseenes 12 5 2 For Further Information 0 0 0 ccccceccsscsses
4. 991 Skeletal Street Network File User Guide A CMA is delineated around an urban area called the urbanized core and having a population of at least 100 000 based on the previous census Once an area becomes a CMA it is retained in the program even if its population subsequently declines Census Tract CT The general concept of a census tract CT is that of a permanent small urban neighbourhood like or rural community like area established in large urban centred regions with the help of local specialists interested in urban and social science research For the full definitions and additional remarks related to this term users should refer to the 199 Census Dictionary Cat No 92 301E Page 8 Statistics Canada 1991 Skeletal Street Network File User Guide 4 GLOSSARY OF TERMS CONT D Census tracts are delineated jointly by a local committee and Statistics Canada according to the following criteria 1 Whenever possible census tract boundaries must follow permanent and easily recognizable physical features 2 The population of a census tract must be between 2 500 and 8 000 with a preferred average of 4 000 persons except for those census tracts in central business districts in other major commercial and industrial zones or in peripheral rural or urban areas that may have either a lower or higher population 3 When first delineated or subsequently subdivided census tracts must be as homogeneous as possible
5. Network File User Guide and the 199 Digital Boundary File User Guide for the Digital Boundary File description 1 Lineage Lineage includes descriptions of the source material from which the data were derived and the methods of derivation including the dates of the source material and all transformations involved in producing the final digital files or map products Source Material The SSNFs were derived from the 1991 Street Network Files and the 1991 CT Digital Boundary Files as stated earlier Refer to their respective user guides for a complete description of the lineage of those files Method of Derivation The process of thinning out SNFs to create the SSNFs began by identifying those streets which were also CT boundaries by the following automated process Working in an ARC Info Version 6 0 environment the CT Digital Boundary Files were overlaid on the 1991 SNFs in order to flag those arcs which formed a CT boundary Since the CT DBFs were constructed using SNF features a good match was ensured Page 3 Statistics Canada 1991 Skeletal Street Network File User Guide Using attribute information tables in ARC Info the arcs comprising portions of streets identified in the overlay process were identified by STREET NAME e g First and TYPE e g Ave These attributes were used to ensure the complete street was retrieved and not just the portion of each street which constituted a CT boundary This process retrie
6. cesscesessesceseesesseesessessesseaceeceseeesecesssesseenes 13 5 3 Additional References and Services cccccsccessssssscssesseseeseeseeseesseeeeeeesesecsecsesesseeaes 15 Page 1 Statistics Canada 1991 Skeletal Street Network File User Guide ARC Info is a registered trademark of the Environmental Systems Research Institute MapInfo is a registered trademark of Mapping Information Systems Corporation Windows is a trademark of Microsoft Corporation LOVERVIEW OF THE SKELETAL STREET NETWORK FILE 1 Description Skeletal Street Network Files SSNFs are thinned out street network files containing major roads and railways only with street names but no address ranges To define major streets features forming census tract CT boundaries were used as a starting point Where a street is identified as a CT boundary effort was made to include its non boundary extension for continuity Shorelines or other water bodies are not included Not all features forming CT boundaries were captured in the SSNFs Census tract boundaries were used to define major streets within an urban centre for three reasons census tract boundaries tend to be major roads in a city the automation of the thinning process was made easier and this general concept was used to select major streets for the 1991 CMA CA CT reference maps The attribute information associated with the streets include the street name the type and its direction w
7. he file includes the feature NAME TYPE and DIRECTION Approximately 35 features within each of six of the 39 SSNFs were checked to ensure that the attribute information was transferred correctly from the corresponding Street Network Files No errors were found Note that the feature names as provided in the SSNFs may not match those precisely as depicted on the CMA CA CT Reference Maps In some cases alternate names are used e g Road 30 is shown on the map but called Innes Rd in the SSNF Both names were shown on a street map of the same area A few line segments in a SSNF may not have a name identified for them For example one such record in a total of 1535 records in the Halifax SSNF three in 3699 records in the Hamilton SSNF less than 0 1 These blank records have no impact on the use for which the SSNFs were intended 2 4 Logical Consistency Logical consistency describes the fidelity of relationships encoded in the data structure of the digital spatial data ie how well elements of the data structure follow the rules imposed on them Some small unattached line segments may exist in the SSNFs as a result of the selection process from the SNF source files These should have no impact on their use as a referential underlay for the CT DCFs for which the files were intended 2 5Completeness Completeness expresses the degree to which the geographic entities features are captured according to the data capture specifications It al
8. here the direction is used within the street name identification such as First Ave East A Railway is identified with its name such as CNR THB for the Toronto Hamilton and Buffalo railway etc SSNFs are provided as a standard product in MapInfo format in the Lambert Conformal Conic projection They can also be ordered in ARC Info Export format They are line files with no polygon topology Page 2 Statistics Canada 1991 Skeletal Street Network File User Guide 2 Purpose The 1991 Skeletal Street Network Files contain a sub set of streets and railways from the 1991 Street Network File The SSNFs have been produced solely to provide some cartographic reference features when producing thematic maps with the CT Digital Cartographic Files DCFs The SSNFs do not contain shoreline features since shoreline is incorporated in the CT DCF The SSNFs exist for areas covered by Street Network Files in all 25 census metropolitan areas CMAs and the 14 census agglomerations CAs which are included in the census tract program The SSNFs are provided for users who do not require the detail of the Street Network Files from which they were derived Page 2 Statistics Canada 1991 Skeletal Street Network File User Guide HI DATA QUALITY STATEMENT The Skeletal Street Network Files were derived from the 1991 Street Network Files and the 1991 CT Digital Boundary Files For a complete description of the SNF refer to the 1991 Street
9. in terms of the economic status and social living conditions of their populations 4 Their shape must be as compact as possible All census metropolitan areas CMAs and census agglomerations CAs in Canada containing a census subdivision CSD i e municipality having a population of 50 000 or more at the previous census are eligible for a census tract program Once a census metropolitan area or census agglomeration is added to the program it is retained even if the population subsequently decreases below 50 000 CSDs already within a tracted CMA do not qualify for a separate CT program when they reach a population of 50 000 Lambert Conformal Conic projection A map projection which is widely used for mapping Canada on one sheet since it provides good directional and shape relationships for mid latitude regions having a mainly east to west extent Standard parallels at 49 N and 77 N are most commonly used as well as a central meridian at 91 52 W Locations are specified in easting and northing co ordinates in metres relative to a pre defined origin Thematic maps A thematic map is the representation of statistical data on a map Thematic maps summarize statistical data relate them to actual locations on the ground and reveal geographic patterns or relationships Thematic maps are used to portray spatial patterns of population income etc These maps are useful for policy and decision making or descriptive purposes Page 9
10. ith a spatial analytical tool for designing their own geographical areas by aggregating standard geographical areas for mapping and for other data manipulation operations and analysis offered by the user s software DIGITAL CARTOGRAPHIC FILE The Digital Cartographic Files are geographic boundary files for thematic mapping applications used by Geographic Information Systems and mapping software packages STREET NETWORK FILE These computer files provide the street network for most large urban centres in Canada They include streets railways and other features as well as relevant information such as street names and address ranges Street Network Files are used as the base for a user s geographic application software for mapping purposes or special applications such as transportation planning or delivery services The user should be aware of the vintages of the individual Street Network Files when considering the particular application Page 12 Statistics Canada 1991 Skeletal Street Network File User Guide 5 2 For Further Information For further information on the Skeletal Street Network Files or other products and services available from the Geography division contact your nearest Regional Reference Centre If you live outside the local dialing area call one of the toll free numbers provided in the list that follows ATLANTIC REGION Serving the provinces of Newfoundland and Labrador Nova Scotia Prince Edward Island and Ne
11. ns may be ordered through your local bookstore or subscription agent Contact the nearest Regional Reference Centre for a list of Canadian outlets available or consult the 1991 Census Catalogue Catalogue No 92 302E Secondary distributors offer data access and analytical support through a variety of consulting and computer based services not available at Statistics Canada The names and addresses of licensed distributors may be obtained from any Regional Reference Centre Statistics Canada provides digital geographic products which allow computer manipulation of geographic data A customized retrieval service is available for users who wish to define their own geographic area of study A variety of data retrieval files and services provide flexibility in selecting a geographic base A complete description of available digital files and services is documented in the 1991 Census Catalogue Catalogue No 92 302E Information concerning Census of agriculture products and services may be referenced in the 1991 Census of Agriculture Products and Services publication Catalogue No 92 303 or by calling toll free 1 800 465 1991 Users with special data requirements may request post census survey services Data are made available on microcomputer diskettes for use with spreadsheet software or on paper output For additional information please contact the nearest Regional Reference Centre The Dissemination Division is responsible for CANSIM Stati
12. so contains information about selection criteria definitions used and other relevant mapping rules No verification was done to ensure that all streets that formed CT boundaries were included in the SSNFs since 100 completeness was not a rigid requirement for the purpose of these files SSNFs do not exist for areas within the tracted CMA CA not covered by Street Network Files 2 6Other Considerations The SSNF will provide some context to the CT Digital Cartographic boundaries in terms of street location on a thematic map Because CTs represent neighbourhoods the bounding streets tend Page 5 Statistics Canada 1991 Skeletal Street Network File User Guide to represent major or well known streets within any given city These are meant to allow users to orient themselves when viewing a thematic map The SSNF should not be used either to locate a street of interest it may not be there or as a definitive guide to major streets in a city major streets are not always a CT boundary V TECHNICAL SPECIFICATIONS MapInfo In MapInfo SSNFs are line files as opposed to digital boundary files which are polygon files Attribute information associated with each line segment NAME A twenty character code containing the given name of the feature TYPE A two character item used for street identification when the street is a single or multiple lane street The TYPE is a unilingual abbreviation such as RD Road BV Boulevard
13. stics Canada s computerized database network and information retrieval service Users are provided with access to current and historical statistics in various forms including specialized data manipulation and analysis packages graphics facilities and a bibliographic search service For more information about CANSIM contact any Regional Reference Centre Page 15 Statistics Canada 1991 Skeletal Street Network File User Guide
14. tings Street VANCOUVER B C V6C 3C9 1 800 663 1551 604 666 3691 604 666 4863 Toll free service Local calls Fax number PRAIRIE REGION Serving the provinces of Manitoba Saskatchewan Alberta and the Northwest Territories Advisory Services Statistics Canada MacDonald Building Suite 300 344 Edmonton Street WINNIPEG Manitoba R3B 3L9 1 800 563 7828 204 983 4020 204 983 7543 Toll free service Local calls Fax number Advisory Services Statistics Canada Avord Tower 9th Floor 2002 Victoria Avenue REGINA Saskatchewan S4P OR7 1 800 563 7828 306 780 5405 306 780 5403 Toll free service Local Calls Fax Number Advisory Services Statistics Canada First Street Plaza Room 401 138 4th Avenue South East CALGARY Alberta T2G 4Z6 1 800 563 7828 403 292 6717 403 292 4958 Toll free service Local Calls Fax Number Advisory Services Statistics Canada Park Square 8th Floor 10001 Bellamy Hill EDMONTON Alberta T5J 3B6 1 800 563 7828 403 495 3027 403 495 5318 Toll free service Local Calls Fax Number Telecommunications Device for the Hearing Impaired 1 800 363 7629 Page 14 Statistics Canada 1991 Skeletal Street Network File User Guide Toll Free Order Only Line Canada and United States 1 800 267 6677 5 3 Additional References and Services In addition to the Regional Reference Centres and depository libraries Statistics Canada publicatio
15. ved all streets in the CMA or CA with the same STREET NAME and TYPE thus some non CT boundary streets are included in the SSNF In some cases particularly in the larger urban centres this process created a number of small unattached line segments representing short streets or even highway ramps which have the same name as another street or ramp used elsewhere as a CT boundary within 2 1 Lineage cont d the CMA or CA Every attempt was made to interactively remove these segments though some may still remain in the files Conversion to MapInfo The MapInfo module ARCLINK was used to convert the resulting ARC Info coverages into MapInfo format 3 Positional Accuracy Positional accuracy is the difference between the true position of a feature in the real world and estimated position stored in the digital file Positional accuracy depends on the quality of the source material used and the processes used to create the files ie manual drafting digitizing etc No numerical measurements of positional accuracy have been made SSNFs are designed to provide reference to the locations of the CT cartographic boundaries and the line features in the SSNFs match the boundaries precisely 5 Attribute Accuracy Attribute accuracy refers to the accuracy of the non positional information contained in the digital file Page 4 Statistics Canada 1991 Skeletal Street Network File User Guide The attribute information contained in t
16. w Brunswick Advisory Services Statistics Canada Viking Building 3rd Floor Crosbie Road ST JOHN S Newfoundland A1B 3P2 1 800 565 7192 709 772 6433 Toll free service Fax Number Advisory Services Statistics Canada North American Life Centre 1770 Market Street HALIFAX Nova Scotia B3J 3M3 1 800 565 7192 902 426 5331 902 426 9538 Toll free service Local calls Fax number QU BEC REGION Advisory Services Statistics Canada 200 Ren L vesque Blvd W Guy Favreau Complex Page 13 Suite 412 East Tower MONTR AL Qu bec H2Z 1X4 1 800 361 2831 514 283 5725 514 283 9350 Toll free service Local calls Fax number NATIONAL CAPITAL REGION Statistical Reference Centre NCR Statistics Canada R H Coats Building Lobby Holland Avenue OTTAWA Ontario K1A 0T6 If outside the local calling area please dial the toll free number for your region 613 951 8116 613 951 0581 Local calls Fax number ONTARIO REGION Advisory Services Statistics Canada Arthur Meighen Building 10th Floor 25 St Clair Avenue East TORONTO Ontario MAT 1M4 1 800 263 1136 416 973 6586 416 973 7475 Toll free service Local calls Fax number PACIFIC REGION Serving the province of British Columbia and the Yukon Territory Statistics Canada 1991 Skeletal Street Network File User Guide Advisory Services Statistics Canada Sinclair Centre Suite 300 757 West Has
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