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As 2482-1989 Geographic Information Systems - Geographic Data - Interchange of Feature-coded Digital Mapping

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AS 2482—1989

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Australian Standard® Geographic information systems— Geographic data—Interchange of feature-coded digital mapping data

This Australian Standard was prepared by Committee IT/4, Geographical Information Systems. It was approved on behalf of the Council of Standards Australia on 26 June 1989 and published on 13 November 1989.

The following interests are represented on Committee IT/4: Associati Association on of Aerial Aerial Surveyor Surveyors, s, Australia Australia Australian Bureau of Statistics  .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    7   e   e   r    f   a   s    i   s    i    h    T

Australian Institute of Cartographers Australian Key Centre in Land Information Studies Australian Map Circle Australian Australian Photogramme Photogrammetric tric and Remote Remote Sensing Society Bureau of Mineral Resources CSIRO, Division of Informatio Information n Technol Technology ogy Department of Administrative Services Department of Defence Departmen Departmentt of Geographic Geographic Information Information,, Qld Departmen Departmentt of L and Administration, Administration, W.A. Department of Lands and Housing, N.T. Departmen Departmentt of L ands, ands, N.S.W. Department of Lands, S.A. Department of Lands, Tas. Institute Institute of Surveyors, Surveyors, Australia National National Library of Australia Australia Telecom Australia

 Review of Austr alia n Sta ndards. To keep abreast abreast of progress progress in industry, industry, Australian Australian Standards Standards are subject  to periodic periodic review review and are kept up t o date by the issue issue of amendmen amendments ts or new editions editions as neces necessa sary ry.. It is important therefore therefore that Standards Standards users users ensure ensure that they are in possess possession ion of the latest edition, and any amendments amendments thereto. thereto. Full details of all Australian Australian Standards Standards and related publications will be found in the Standards Standards A ustralia ustralia Catalogue of Publications; this information is supplemented each month by the magazine magazine ‘The Australian Standard’, Standard’, which subscribing subscribing members members receive, receive, and which gives details of new publications, publications, new editions and amendments, amendments, and of withdrawn Standards. Standards. Suggestions Suggestions for improvements improvements t o Australian Australian S tandards, tandards, addresse addressed d to the head office of Standards Australia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate appropriate action taken.

AS 2482—1989

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Australian Standard® Geographic information systems— Geographic data—Interchange of feature-coded digital mapping data

First published as AS 2482—1981. Second Second edition 1984. Third edition 1989.

PUBLISHED BY STANDARDS STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) 1 THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 0 7262 5842 3

AS 2482—1989

2

PREFACE This St andard andard was prepared prepared by the St andard andardss Australia Australia Committee on Geographica Geographicall Information Information Systems to supersede AS 2482—1984, Interchan Interchange ge of f eature eature coded coded digital digital mapping mapping data. The purpose purpose of this Standard Standard i s to specify specify a file structure structure and formats for the interchang interchangee of digital mapping mapping data and associa associated ted information. information. T his includes includes a code structure structure to be used for identifying identifying individual t ypes of cultural, hydrographic, hydrographic, relief and vegetation vegetation features associated associated with t he mapped mapped entities. The need for such a Standard arises for the following reasons: (a) Different Different organizat organizations ions are respons responsible ible for the generation generation or initial acquisition acquisition of the various various types types of mappi mapping ng data. data. This informa information tion is then then gener generally ally used used by other other organ organiza ization tionss for specific purposes. (b) The nature nature of the data data at its initial acqui acquisiti sition on and the form in which it is stored stored with the different organizations varies significantly depending depending on its intended use by those organizations. More frequently now, this information exists in a digitized form.  .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    7   e   e   r    f   a   s    i   s    i    h    T

(c) It would be of significant significant econo economic mic benefit benefit i f a simple simple common common structure structure were defined defined for the interchange of the basic digitized information thus avoiding costly duplication of effort in its reacquisition. This edition is technically identical with the 1984 edition except as follows: (a) To describe more more clearly clearly the intended intended use of the Standard, Standard, Clause Clause 1 (Scope) (Scope) and the title have have been amended. (b) To reflect recent recent develop developmen ments ts relating to the Australian Australian Geodetic Geodetic System— (i)

the definition definitionss of the AGD, AHD AHD and AMG in Clauses Clauses 4.1, 4.1, 4.2 and 4.3 have have been revise revised; d;

(ii)

a definition definition for the World Geode Geodetic tic System System (WGS) has been included included in a new Clause Clause 4.4. 4.4. The previous Clause 4.4 (Integrated survey grid) becomes Clause 4.5, Clause 4.5 (Feature) becomes 4.6 and Clause 4.6 (Record segment) becomes 4.7;

(iii) minor minor amendmen amendments ts have been made to Clause 7.4(b); 7.4(b); (iv) extra extra option optionss have have been include included d in Table Table 8, Charac Character ter Position Position 6 to accord accord with the the revised Clause 7.4(b). (c) (c) To more more clear clearly ly iden identi tify fy the the versio ersion n of AS 2482 2482 which hich has has been been used used for for a parti particul cular ar interchange interchange volume: (i)

Claus Clausee 7.1 has has been amende amended d to require require explici explicitt identif identifica ication tion of the version version on the external label;

(ii) (ii)

Clause lause 7.5 7.5 has has been been amen amende ded d to incl include ude the vers versio ion n iden identif tifie ierr in the the des descript criptive ive information.

(d) Append Appendice icess A, B, E and F have been deleted, deleted, becaus becausee their conten contentt is adequa adequately tely covered covered in other other publication publicationss and Appendix Appendix F has been been supersed superseded ed by the present present Tables Tables 4, 5, 6, 8 and 9. (e) The original original Appendix Appendix D has been been redesignat redesignated ed Append Appendix ix A and a new Appen Appendix dix B has been been included. Appendix B now specifies a subset of this Standard for use by organizations wishing to adopt a single procedure where the Standard offers several options.

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AS 2482—1989

CONTENTS Page

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FO RE REW OR ORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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1 SC OP OPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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2 RE F ER ER E NC NC ED ED DO DOC UM UME NT NT S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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3 AP P LI LI C AT AT IO IO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

4 DE F IN IN IT ITI ON ON S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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5 PREFERR REFERRED ED INTERC INTERCHA HANG NGE E METHO METHOD D . . . . .. . . . .. . . . .. . . . .. . . . . . .. . . . .

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6 OPTION PTIONA AL INT INTERCHA ERCHANG NGE E METHOD ETHODS S . . . . .. . . . .. . . . .. . . . .. . . . . . .. . . . .

6

7 IN TE TER C CH HA NG NG E FI FIL E D ES ESC R IP IP TI TI ON ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

8 RE CO COR D C ON ON TE TEN T

. . .. . . ... . . .. . .. . . .. . .. . . .. .. . . ... . . .. . .. .. . . .

7

9 FE A TU TU RE RE HE AD ADE R C OD ODE S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

APPENDICES A ST A TE TE / TE TE RR RR IT ITO RY RY C OD ODE S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

B SUBSET UBSET BAS BASED ED ON ON NMC NMC RECOM RECOMM MENDAT ENDATION IONS S ...... ............. ...

15

C FEATURE EATURE CODES ODES AND IND INDEX EX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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AS 2482—1989

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FOREWORD This Standard is prima rily intended for use by organizations that wish to i nterchange nterchange digital mapping mapping or charting data and information. The interchange is based on individual records for each feature involved without any attempt to define structures or relationships within the data. The features are identified by an 8-digit feature header code and are generally specified by a string of coordinate coordinate values values defining defining their boundar boundary y or location and other other optional optional attri bute bute data. data. The feature header is composed of a feature code, being one of those codes listed in Appendix C of this Standard and a feature modifier. This Standard does not specify values for the feature modifier other than zeros. Other values may be used at the supplier’s discretion to permit a further breakdown of the feature code. If other values are used, a list of them and their meanings is to be supplied with the data. This Standard describes a preferred interchange medium with a simple format designed for ease of  conversion and to minimize loss in the event of a record being corrupted.  .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    7   e   e   r    f   a   s    i   s    i    h    T

AS 2482—1989

5

STANDARDS STANDARDS AUSTRALIA AUSTRALIA Australian Standard Geographic Geographic information information systems—Geogr systems—Geographic aphic data— Interchange of feature-coded digital mapping data

1 SCOPE. COPE. This Standard specifies the format and codin oding g of unst unstruc ructu tured red digi digital tal poin pointt and and vect vector or geograp geographic hic data to be used used when when the information information is being prepared for exchange purposes.

 .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    7   e   e   r    f   a   s    i   s    i    h    T

4 DEFINITIO DEFINITIONS. NS. For the purpos purposee of this this Standard Standard,, the definitions below apply.

This Standard is not intended to apply to—

4.1 Australian Australian Geodeti Geodeticc Datum (AGD) (AGD)—the basis of  the the geog geogra raph phic ical al lati latitu tude de and and long longitu itude de coord coordin inat atee systems AGD66 and AGD84.

(a) data represen representing ting maps maps of area area mosaics mosaics (polygon (polygon data);

4.2 Australian Australian Height Height Datum Datum (AHD) (AHD)—the —the datum full heights above mean sea level.

(b) (b) grid grid or raster raster data; data; or

—the metr metric ic 4.3 4.3 Aust Austra rali lian an Map Map Grid (AM (AMG)—the Cartesian coordinate system based on the AGD and the Transverse Mercator map projection, whose coordinates are termed eastings and northings, AMG66 and AMG84.

(c) topologic topologically ally st ructured ructured digital digital data. However, some of the feature codes included in this Standard Standard are applicable applicable to the above. above. 2 REFERENCED REFERENCED DOCUME DOCUMENTS. NTS. The following docume documents nts are referred to in this S tandard: tandard: AS 1009 1009

1068 1068

Info Informa rmati tion on pro proce cess ssin ing— g—99-tra track ck 12.7 12.7 mm wi de de m ag agn et et ic ic ta pe pe f or or i nf nf or or ma mat io ion interchange recorded at 32 rpmm Inform Informati ation on proces processing sing—File —File structu structure re and and labelling of magnetic tapes for information exchange

177 6

I nf nf or or ma ma ti ti on on p ro ro ce ce ss ss in in g— g— 77- bi bi t c od od ed ed character set for information interchange

2241 2241

9-tra 9-track ck,, 12.7 12.7 mm mm (0. (0.5 5 in) in) wide wide magn magnet etic ic tape for information int erchange erchange recorded at 63 rpmm (1600 rpi), phase encoded

2356 2356 2356 2356.1 .1

2412

2414 2414

2750 2750

Informa Information tion process processing ing—Imp —Impleme lementat ntation ion of  th e 7 -b -bi t c od oded c ha hara ct cte r s eett a nd nd i t s extensions Part 1: Implem Implemen entati tation on of the the 7-b 7-bit it cod coded ed character set and its 7-bit and 8-bit extens xtensio ions ns on 9-tra 9-tracck 12.7 12.7 mm (0.5 in) magnetic tape Inf or or ma mat io io n i nt nte rc rchange on 3.81 m m (0.150 in) magnetic magnetic tape cassette at 4 cpmm cpmm (100 (100 cpi), pi), pha phase enco encode ded d at 63 ftpmm ftpmm (1600 ftpi) Info Informa rmati tion on proce process ssin ing— g—Ma Magn gnet etic ic tape tape cass cassette ette and cartrid cartridge ge labellin labelling g and and file file structure for information interchange Inform Informati ation on proc process essing ing—9-tr —9-track ack,, 12.7 12.7 mm (0.5 in) wide magnetic tape for information interchange—Format interchange—Format and recording, using group coding at 246 cpmm (6250 cpi)

3 APPLICATION. APPLICATION. The purpose of this Standard is to provid providee a mean meanss whereb whereby y digital digital mapping mapping and charting charting data, gathered gathered at various scales by different different methods methods and equipm equipments ents in different different organizations organizations,, ma y be con ve veni en ent ly ly in te ter ch cha ng nge d bet we we en en themselves and other interested parties.

4.4 World Geodet Geodetic ic System System (WGS)—the (WGS)—the basis of the geographica geographicall latitude and longitude coordinate coordinate system system for all mapping of Australian offshore islands and external territories lying outside the limits of the AMG, including the Australian Antarctic Territory. NOTE: AGD, AGD (1966 and 1984), AMG (1966 and 1984), AHD and and WGS WGS (as (as defi define ned d in Clau Clause sess 4.1 4.1 to 4.4 4.4 abov abovee) are are comprehe comprehensi nsivel vely y define defined d in Nation National al Mappin Mapping g Council Council Specia Speciall Publication 10, The Australian Australian Geodetic Geodetic Datum Technical Technical Manual. Manual. This manual manual also also covers covers the use of the Transv Transvers ersee Mercat Mercator or and Polar Stereographic grid systems with the WGS.

—the metr metric ic 4.5 4.5 Integ Integra rate ted d Surv Survey ey Grid Grid (ISG (ISG))—the Cartesian coordinate system based on the AGD and the Transverse Mercator map projection, whose coordinates are termed eastings and northings, with 2 ° zones, being subsets of the 6 ° zones defined in the AMG. NOTE NOTE:: ISG ISG is more more compr compreh ehens ensiv ivel ely y defi define ned d in the the N.S. N.S.W. W. Department Department of Lands Publication Publication A Manual Manual of New South Wales Wales  Integrated Survey Grid  dated January 1976.

4.6 Featur Featuree—A char charac acte teri rist stic ic or phys physic ical al illustrated on any graphic map or chart.

enti entity ty

4.7 Record Record segme segment nt—A —A subsub-re reco cord rd of rela relate ted d data data where each segment segment starts with a 4-characte 4-character-leng r-length th field, which which specifie specifiess either either the total total record record length length or the segment length. 5 PREFERRED PREFERRED INTERCHANG INTERCHANGE E METHOD. METHOD. preferred interchange interchange medium shall 5.1 Medium Medium.. The preferred be 9-tr 9-trac ack k 12.7 12.7 mm (0.5 (0.5 in) in) wide wide magn magnet etic ic tape tape at 63 rpmm rpmm (160 (1600 0 rpi) rpi) phas phasee enco encode ded d as spec specif ifie ied d in AS 2241. character terss used used for the inform informati ation on 5.2 Coding Coding.. All charac interchange shall be selected from the graphic set defined in AS 1776 and implemented on the 9-track magnetic tape as defined in AS 2356.1. Records shall be recorded in variable length, type D, format with a maximum block  length of not more than 2048 characters as defined in AS 2356.1. NOTE: The character set defined in AS 1776 is commonly referred to as the ‘ASCII’ character set.

5.3 Labels Labels and file file structur structure. e. The magnetic tape shall be internally labelled and structured in accordance with AS 1068. File sets shall contain applicable labels written at Level 3 as specified in AS 1068.

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AS 2482-1989, Geographic information systems Geographic data - Interchange of feature-coded digital mapping data

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