1:250 000 Scale Colour Raster user guide and technical spec
Contents
1. Metres Metrau M tres Meter Feet Troedfeddi d Pieds Fu amp 5 1000 183 Dr 81 200 0 D 2 SE 2 38 E raw a74 RELIEF TIRWEDD RELIEF HOHENANGABEN Heights in metres above mean ssa level Lichderau mewn metrau uwchlaw letel m r oymedrig Hauteur en m tres au dessus du niveau de la mer Hohe in Meter Uber Normalnull Contour interval approximately 61 metres cr 200 feet Mas cyfwng oddeutu 61 neu 200 trosdfedd rhywng cyfuchiniau Intervalle entre les contours d environ amp 1 m tres cu 200 pieds H herlinien Intervalls ungef hr 61 Meter bzw 200 Fu To convert metres to feet multiply by 3 2808 drosi metrau n drosdfeddi lluceer gyda 3 2808 Pour convertir les m tres en pieds multiplier par 3 2808 Zur Umrechnung vcn Metem in Fub mit dem Faktor 3 2808 multiplizieren True North Difference from arid north at sheet comers is shown left Magnetic North About 2 19 W of grid north in July 2007 decreasing by about V in three years Magnetic data supplied by the British Geclogical Society Intersection latitude amp longitude at 30 intervals net shown where it oan be confused with important detail NORTH POINTS PWYNTIAU R GOGLEDD POINTS AU NORD NORDPUNKTE Diagrammatic only Diagramatig yn unig Graphique seulement Schematische Darstellung Gogledd Cywir Dangosir gwahaniaeth rhwng y gogledd grid ar gomeli r ddalen i r chwith Gogled2. Please note there are some World Files available that contain only sea therefore there is no data available These World Files have been created to allow customers to complete the coastline For LZW compressed formats you may need to acquire a licence for LZW Unisys owns the rights to the LZW format and levies a charge for its use in GIS Some software suppliers license LZW for use in their products others expect the end user to license LZW separately by buying a plug in Further information can be obtained from the Unisys website at www unisys com about unisys Izw RN 1 250 000 Scale colour Raster technical specification chapter 3 v2 2 5 2009 Crown copyright Page 22 of 28 File formats Image file directory TIFF The Image file directory for TIFF will contain the following entries Tag 254 NewSubfileType An indication of the kind of data contained in this sub file for example value 0 Tag 256 ImageWidth The number of columns in the image the number of pixels per row for example value 4000 Tag 257 ImageLength The number of rows of pixels in the image for example value 4000 Tag 258 BitsPerSample Number of bits per component for example value 8 Tag 259 Compression Compression scheme used on the image data for example value 5 LZW Tag 262 Photo Interpretation The colour space of the image data for example value 3 RGB Palette Tag 270 ImageDescription Value 1 250 000 TILE
3. Entfemung in meilen zwischen den zeizhen Ordnance ER Survey 1 250 000 Scale colour Raster technical specification chapter 2 v2 2 5 2009 Crown copyright Page 17 of 28 Communications Cysylltiadau Communications Verkehrswege PRIMARY ROUTES PRIF DRAMWYFEY DD ROUTES NATIONALES HAUPTVERKEHRSSTRASSEN These form a network of recommended through routes which complement the motorway system Selected places of major traffic importance are known as Primary Route Destinations and are shown on this map thus Distances and directions to such destinations are repeated on traffic signs which on primary routes have a green background or on motorways have a blue background To continue on a primary route through cr past a place which has appeared as a destination on previous signs follow the directions to the next primary destination shown on the green backed signs Ffurfia r rhain rwydwaith o drarmwyfeydd trwodd a gymeradwyd ac sy n oytochrit gyfundrefn draffyrdd Adwaenir hai mannau o bwysigrwydd trafnidicl arbennig fel hfannau r Prif Dr feydd a dangosir hwy ar y map hwn fel hyni Ailadroddir y pellterau a r cylarwyddiadau yngly n r cyfryw gyrchfannau ar arwyddion trafnidiaeth sydd chefndir gwyrdd iddynt ar brif dramwyfeydd neu gefndir glas ar dratfyrdd barhau ar y brif dramwyfa drwy le a ymddangosodd fel oyrohtan ar arwydd blaencrol neu heibio i r le hwnnw dilyner y cyfarwyddiadau i r brif gyrchfan nes
4. 1 250 000 Scale Colour Raster user guide annexe A v2 2 5 2009 Crown copyright Page 11 of 28 Annexe B Metadata ISO 19115 compliant UK GEMINI discovery level metadata is provided for the data and can be found on the Glgateway www gigateway org uk The following is a detailed description of the metadata elements that are provided on the Glgateway Title The title of the product Abstract The abstract gives a brief description of the product Currency The currency takes the form of date of last update for the feature Lineage The lineage metadata takes the form of product specification name and date of product specification Spatial extent The spatial extent is supplied in the form of geographic identifiers for example England Scotland and Wales and in the form of geographic coordinates Spatial reference system The spatial reference system for all products takes the form of a British National Grid system namely OSGB36 Data format Data format takes the form of the name of the format or formats the product is supplied in Frequency of updates Frequency of update takes the form of a stated period of time Distributor contact details Distributor contact details include with postal address phone number fax number email address and website Data originator Given as the company having primary responsibility for the intellectual content of the data source in all cases this will be Ordnance Survey Other metadata
5. 4000 BitsPerSample 258 8 8 Compression 259 1 5 Uncompressed LZW Photo Interpretation 262 3 RGB Palette 3 RGB Palette Image description 270 1 250 000 TILE HY TIF 1 250 000 TILE HY TIF XResolution 282 254 254 YResolution 283 254 1 254 1 ResolutionUnit 296 2 Inch 2 Inch DateTime 306 2006 05 15 09 43 20 2006 05 15 08 49 41 Copyright 33432 ORDNANCE SURVEY ORDNANCE SURVEY CROWN COPYRIGHT CROWN COPYRIGHT 2006 2006 The tag values listed in the above table are relevant to 1 250 000 Scale Colour Raster data It should be noted that customers can access tag information from a TIFF raster file by opening an image in Microsoft Office Document Imaging and by right clicking on the data image and looking at page properties By doing so the image parameters are displayed which relate to the tags in a TIFF file and are reflected in the table above Nj Page Properties Page scanned on Page scanned by Scanner Scanner software OCR status Image parameters Bits Per Sample Compression Image Length Image Width Statistic Name Paragraphs Lines Words Characters lt Document properties Page statistics 1 250 000 Scale colour Raster technical specification chapter 3 v2 2 5 2009 Crown copyright Page 24 of 28 15 May 2006 08 56 57 Unknown Unknown Unknown Not done Parameter Name Value 8 LAM 4000 pixels 40 00 cm 4000 pixels 40 00 cm Value gt OK Cancel He
6. also to the associated information such as attribute codes which are required in order to successfully complete the transfer transfer medium The physical medium on which digital data is transferred from one computer system to another for example CD ROM update The process of adding to and revising existing digital map data to take account of change vector A straight line joining two data points vector data Positional data in the form of coordinates of the ends of line segments points text positions and so on volume A physical unit of the transfer medium that is a single disc RN 1 250 000 Scale colour Raster technical specification annexe A v2 2 5 2009 Crown copyright Page 28 of 28
7. contract for the product We may change the information in this specification at any time giving you the notice period specified in the customer contract made between you and Ordnance Survey We do not accept responsibility for the content of any third party websites referenced or accessed in or through this specification any other contractual documentation and or the Ordnance Survey website Copyright in this specification This specification including for the avoidance of doubt any mapping images reproduced herein is Crown copyright 2009 All rights reserved Any part of this specification may be copied for use internally in your organisation or business so that you can use 1 250 000 Scale Colour Raster for the purpose for which it is licensed to your organisation or business but not otherwise No part of this specification may be reproduced or transmitted in any form or by any means including electronically for commercial exploitation without the prior written consent of Ordnance Survey No part of this specification may be copied or incorporated in products services or publications that you generate for onward sale or as free promotional or support materials without the prior written consent of Ordnance Survey Data copyright and other intellectual property rights The Crown or where applicable Ordnance Survey s suppliers owns the intellectual property rights in Ordnance Survey digital map data Full details of th
8. in the raster data RN 1 250 000 Scale colour Raster technical specification annexe A v2 2 5 2009 Crown copyright Page 27 of 28 source scale The scale of the source information from which the map was digitised that is the scale of survey for a basic scale map or the scale of the source map for a derived map spatial data Data that includes a reference to a two or three dimensional position in space as one of its attributes It is used as a synonym for geometric data stipple Used to produce light or dark shading for example building water fill this is dependent on spacing of the dots the denser the dots the darker the effect structured data Data within which collections of features of any type form objects Topographically structured data also contains topological information defining the relationships between features and objects TIFF TIFF is a tagged image file format based file format for storing and interchanging raster images with the most recent version 6 0 published in 1992 topographic database A database holding data relating to physical features and boundaries on the Earth s surface topography Topography is the study of the physical features of the Earth A topographic map s principal purpose is to portray and identify the features of the Earth transfer format The format used to transfer data between computer systems In general usage this can refer not only to the organisation of data but
9. projection The record header is constructed as not all fields have to be used CoordSys Earth Projection 8 the 8 relates to a Maplnfo identifier in this case the Transverse Mercator projection 79 a MapInfo identifier in this case this relates to Ordnance Survey of Great Britain 1936 Airy ellipsoid m relates to the unit of measurement in this case metres 2 this is the origin of the projection in respect of longitude 49 this is the origin of the projection in respect of latitude 0 9996012717 indicates the distortion of the tile at the central meridian A value of 1 0 would indicate no distortion at all However distortion within this projection is minimal even at the far western or eastern limits 400000 100000 these figures indicate the false origin of the British National Grid They represent the south west corner of the Transverse Mercator projection which overlays Great Britain so all coordinates for any tile no matter what scale will always be positive Bounds 4 17232513428e these values represent the minimum bounding X and Y coordinates for 011 7 7486038208e 011 the tile 700000 1300000 these values represent the maximum bounding X and Y coordinates for the tile TIFF World Files TWF can be downloaded from www ordnancesurvey co uk productpages 250kraster and used to georeference 1 250 000 Scale Colour Raster in ESRI ArcView and Arcinfo Also available are the TAB files for use with MapInfo
10. spatially referenced to the Earth This is normally considered to involve a spatially referenced computer and appropriate applications software RN 1 250 000 Scale colour Raster technical specification annexe A v2 2 5 2009 Crown copyright Page 26 of 28 gigabyte Gb The equivalent of 1 073 741 824 bytes a measure of data storage capacity grid The planimetric frame of reference for example the National Grid hard copy A print or plot of output data on paper or some other tangible medium kilobyte Kb The equivalent of 1 024 bytes a measure of data storage capacity map The representation on a flat surface of all or part of the Earth s surface intended to be communicated for a purpose or purposes transforming relevant geographic data into an end product that is visual digital or tactile map generalisation A reduction in map detail so that the information remains clear and uncluttered when map scale is reduced May also involve resampling to larger spacing and or a reduction in the number of points in a line map header Data at the start of the digital map file describing that data It may contain information on the source and history of the geometric data within the map and the coordinate system in use as well as holding information essential to the management of Ordnance Survey s digital mapping system map scale The ratio between the extent of a feature on the map and its extent on the ground normally expressed
11. the encoding of text and attributes by whatever means RN 1 250 000 Scale colour Raster technical specification annexe A v2 2 5 2009 Crown copyright Page 25 of 28 data format A specification that defines the order in which data is stored or a description of the way data is held in a file or record data model An abstraction of the real world that incorporates only those properties thought to be relevant to the application or applications at hand The data model would normally define specific groups of entities and their attributes and the relationship between these entities A data model is independent of a computer system and its associated data structures A map is one example of an analogue data model database An organised integrated collection of data stored so as to be capable of use in relevant applications with the data being accessed by different logical paths Theoretically it is application independent but in reality it is rarely so dataset An Ordnance Survey term for a named collection of logically related features arranged in a prescribed manner for example all water features A dataset has more internal structure than a layer and is related to another dataset only by position digital Data that is expressed as numbers digits in computer readable form is said to be digital digital map Any map sold by Ordnance Survey or its agents in any form that is on computer readable media or as hard copy on paper and
12. 2 5 2009 Crown copyright Page 13 of 28 1 250 000 Scale colour Raster Technical specification Contents Section Page no Introductigl ousnseeiindiemei enmt add pn RUE IER ee M LE Mu ee 15 Purpose of this specification and dscaimer eene 15 Copyright in this specification sssssssssssseeseeneeneeeene ennemis 15 Data copyright and other intellectual property rights ssssse 15 Using this Specification 2 nd rere aset eigen Ss ein hinds 15 Chapter 1 TC TAC E 16 NEL 16 Software hardware reoulrements sss eene nnns 16 Sjerzegre te mec 16 Chapter 2 LOGO 17 Chapter 3 Managing 1 250 000 Scale Colour Raster files eeeeeeeeeeneenenn 22 GeOreferencCiing 20 SEENEN eo eu doh DEENEN Eed 22 File formats Image file directory CTIEFE ee 23 MIELE 24 Colour image directory ciem aiaa eie abd Dok ace Pe ad Ee ieee 24 Annexe A GIOSSANY 25 v2 2 5 2009 RN 1 250 000 Scale colour Raster technical specification contents v2 2 5 2009 Crown copyright Page 14 of 28 Introduction Purpose of this specification and disclaimer This is the technical specification hereafter referred to as the specification applicable to the 1 250 000 Scale Colour Raster hereafter referred to as the product which is referred to in the Framework Direct Licence Specific Use Framework Partner Licence or your other customer
13. HY TIF Tag 273 StripOffsets For each strip the byte offset of that strip for example first four values 2333 4615 6690 8765 Tag 278 RowsPerStrip The number of rows in each strip for example value 65 Tag 279 StripByteCounts For each strip the number of bytes in that strip after compression for example first four values 2282 2075 2075 2075 Tag 282 XResolution The number of pixels per resolution unit in the image width for example value 254 1 Tag 283 YResolution The number of pixels per resolution unit in the image length for example value 254 1 Tag 296 ResolutionUnit Units used for resolution for example value 2 Inch Tag 306 DateTime Date and time of image creation for example value 2006 05 15 08 49 41 Tag 320 ColorMap First four values 15163 15163 14649 15163 Tag 33432 Copyright Copyright notice for example value ORDNANCE SURVEY CROWN COPYRIGHT 2006 NOTE The values given above are relevant to 1 250 000 Scale Colour Raster data RN 1 250 000 Scale colour Raster technical specification chapter 3 v2 2 5 2009 Crown copyright Page 23 of 28 TIFF Colour image director Tag number TIFF 8 bit TIFF 8 bit uncompressed LZW compressed File byte order II Little endian II Little endian Magic number 42 42 Number of fields in IFD 16 16 NewSubfileType 254 0 0 ImageWidth 256 4000 4000 ImageLength 257 4000
14. Ord Ed 1 250 000 Scale Colour Raster User guide and technical specification 1 250 000 Scale Colour Raster User guide Contents Section Preface Chapter 1 Chapter 2 Chapter 3 Annexe A Annexe B Annexe C Page no 3 eec 3 Use of Elte le EEN 3 P rpose and elTe RI PET 3 Copyright in this guide 3 nde x E netter OEC eite ettet a o ERO EE RE FED ie aret 4 Data copyright and other intellectual property obt 4 lr ur c HP 4 Backup provision of the Droduct eene nennen nennen nennen 4 USING BUL POUR E 4 Ippregduetten m 5 Applications tmm EL 5 SYSTEM TEQUIFEMENUS LS 6 Supply and ten EE 7 Lcd 8 Sc M aalaees 8 COVE AGE EE 8 Source of 1 250 000 Scale Colour Raster 8 HUI 8 ni EE 8 elut 8 Georetferenclrng ET 8 Data ul E 8 Image compro SSO DEET 9 Lossless COMPMESSION NEE 9 LOSSY Compressie a EA AAA EEA 9 RT EE 9 REVISION 9 Data TE 10 Case studies ainsi rie er i Eee REI Ire nur EEN 11 Creating the right environment for data management 11 The Welsh Environmental Data Interface WENDI ssssss
15. af a ddangosir ar yr arwyddion cefndir gwyrdd Celles ci constituent un r seau d axes recommand s qui compl tent le syst me d autoroutes Des feux s lectionn s en raison de leur grande importance pour la circulation cont d sign s par Destinations de route nationals et sont marqu s sur ce plan comme suit Les distances et les directions vers ces destinations sont r p amp tees sur les panonceaux qui ont un fond vert sur les routes nationales et un fond bleu sur les autorcutes Pour poursuivre sur une routs nationals en traversant ou en d paseant un feu qui est apparu comme lieu de destination zur les panonceaux pr c dente suivez les directions jusqu la prochaine destination importante indiqu s sur les panonceaux fond vert Dieses bilden ein Netzwerk von empfchlenen Durchgangerouten die zur Erg nzung des Autobahnnetzes dienen Ausgewthite Orte mit hoher Verkehrs bedeutung werden als Hauptverkehrszielorte bezeichnet und sind auf dieser Karte wie folgt gekennzeichnet Die Entfemungen und Richtungen zu dissen Zielpunkten werden auf Verkehrshinweisschildem in regsimabigen Entfernungen angezeigt Auf Hauptverkehrsstra amp en sind dies Hinweise auf Schidern mit griinsm Hintergrund und auf Autobahnen solche mit blauem Hintergrund Um einer HauptverkehrestraBe weiter zu fclgen die durch einen Ort hindurch oder an einem solchen vorbei f hrt der bereits auf vorherigen Hinweisschildem als Zielort aufgef hrt war folgen Sis den Hinweiss
16. al The more an image is compressed the more degraded it becomes In many situations such as posting images on the Internet or printing small to medium sized prints the image degradation isn t so obvious If a lossy compressed image is over enlarged the degradation will become apparent TIFF TIFF is one of the most commonly used ossless image formats TIFF is primarily designed for raster data interchange and is supported by numerous image processing applications This permits much more efficient access to very large files that have been compressed Revision The 1 250 000 Scale Colour Raster master dataset is updated and released annually in June C NENEENENMEBEBBRIRSEREEEEEEEEEMAK A FE2RNNMENNEENEEEEEEEEEEN 1 250 000 Scale Colour Raster user guide chapter 2 v2 2 5 2009 Crown copyright Page 9 of 28 Chapter3 Data measures Ordnance Survey measures the data in its products in one or more of the ways set out in table 3 below Table 3 Definitions of data measures Completeness Presence and Omission Features representing objects that conform absence of to the specified data content but are not features against present in the data the specified data conten Commission Features representing objects that do not conform to the specified data content but are present in the data Logical Degree of Conceptual How closely the data follows the conceptual consistency adherence to consistency rules or model log
17. as a representative fraction for example 1 1250 or 1 50 000 megabyte Mb The equivalent of 1 048 576 bytes a measure of data storage capacity National Grid A unique referencing system that can be applied to all Ordnance Survey maps of Great Britain GB at all scales It is based on 100 km squares covering the whole of GB based on a Transverse Mercator projection It is used by Ordnance Survey on all post war mapping to provide an unambiguous spatial reference in GB for any place or entity whatever the map scale northings See rectangular coordinates pixel In the 1 10 000 scale product a pixel is a single point represented by a square raster data Attribute data expressed as an array of pixels with spatial position implicit in the ordering of the pixels rectangular coordinates Also known as X Y coordinates and as eastings and northings These are two dimensional coordinates that measure the position of any point relative to an arbitrary origin on a plane surface for example a map projection a digitising table or a VDU screen resolution A measure of the ability to detect quantities High resolution implies a high degree of discrimination but has no implication as to accuracy For example in a collection of data in which the coordinates are rounded to the nearest metre resolution will be 1 m but the accuracy may be 5 m or worse RGB Red green and blue colours and variations of them go to make up the colours represented
18. available includes keywords start date of data capture access constraints use constraints level of spatial data supply media and presentation details 0 0 NENENENENMEERREMEAAAMKNMMNMNMNMNMNMNMN NI 1 250 000 Scale Colour Raster user guide annexe B v2 2 5 2009 Crown copyright Page 12 of 28 AnnexeC Product and service performance report form Ordnance Survey welcomes feedback from its customers about 1 250 000 Scale Colour Raster If you would like to share your thoughts with us please print a copy of this form and when completed post or fax it to the address below Bol el a 10 EE Ee EE Le el Quotation or order reference ssssssessseseeenee eene enenehhehes EAA AERA inse sinn itis sa nasi sida dass sas essa nasa sss dass s sas dd Please record your comments or feedback in the space below We will acknowledge receipt of your form within three 3 working days and provide you with a full reply or a status report within 21 working days If you are posting this form please send it to 1 250 000 Scale Colour Raster Product Manager Ordnance Survey Romsey Road SOUTHAMPTON SO16 4GU If you wish to return it by fax please dial 023 8079 2615 Any personal information that you supply with this report form will be used by Ordnance Survey only in the improvement of its products and services It will not be made available to third parties RN 1 250 000 Scale Colour Raster user guide annexe C v2
19. childern zum n amp zhsten auf den gr nen Schildern angezeigten Hauptzielort RAILWAYS RHEILFFYRDD CHEMIN DE FER BAHNLINIEN Track standard gauge Rheilffordd safonol cartement des rails standard Bahnlinie mit normaler Spurweite Station Tunnel Gorsaf Twnel Gare Tunnel Haltepunkt Tunnel Track narrow gauge Pheilflerdd qul Jauge de voie troite Bahnlinie mit Schmalepurweite t Ot Road orcesing under or over Ffordd yn oroesi danodd neu drosodd Franchiszerment routier au desscus ou au dessus StraBenunter bzw aberf hrung Level orcesings Crossfan wastad Passages niveau niveaugleiche Bahnubergangs Track rapid transit with station System gudo ysgafn gyflym gyda gorsaf R seau de voies express avec gare Schnellbahntrasse mit Haltepunkt General information Gwybodaeth cyffredinol Informations g n rales Allgemeine Informationen LAND FEATURES ARWEDDION TIR ELEMENTS GEOGRAPHIQUES LANDSCHAFTSZEICHEN Buildings Adeiladau Batiments Geb ude Wood Coed Bois Holz Public telephone Fi n oyhoeddus T l phone ud publiqua Allgornsines tslsfon x Windmill Melinwynt Moulin vent Windm hle Landmark Tirnod Point de rep re Grenzstein T Mast Mast Anterne Mast t Wind generator Generadur gwynt clienne Windrad Airport with scheduled flights with without custom Maes awyr gyda gwasanaethau hedfan drefnedig gyda heb gyfl
20. ckup provision of the product You are advised to copy the supplied data to a backup medium Using this guide The documentation is supplied in portable document format PDF only Free Adobe Acrobat Reader software which displays the guide incorporates search and zoom facilities and allows you to navigate within Hyperlinks are used to navigate between associated parts of the guide and to relevant Internet resources by clicking on the blue hyperlinks and the table of contents If you are unfamiliar with any words or terms used and require clarification please refer to the glossary at the end of the document RN 1 250 000 Scale Colour Raster user guide preface v2 2 5 2009 Crown copyright Page 4 of 28 Chapter1 Introduction Ordnance Survey s 1 250 000 Scale Colour Raster product available in various formats see technical specification provides entry level small scale mapping suitable for overlaying with individual business information It is derived from road maps production data resulting in high quality image and resolution The 1 250 000 Scale Colour Raster is available as either full national coverage providing an excellent overview of the country or as England Scotland or Wales separately Figure 1 shows an extract of 1 250 000 Scale Falfield D X 3 7 9 whittiets py QD Morton zo df wd Halel A Litlleton upon D 4 v v Seven M5 dh E 5 m7 Rangeworthy 4 ees Latteridge 4 mn r A m
21. d Magnetig Tua 2 19 i r gorllewin o r gogledd grid yn Gorffennaf 2007 yn gostwng wrth oddeutu 1 mewn 3 blynedd Cyfiwynid y data magnetic gan y British Geclogical Survey Llinellau rhwylog yn crossi bob 20 ni ddangosir ble byddai yn cael eu camgymryd gyda manylion marl Nord vrai La diff rence d avec le nord du quadrilage aux coins de la feuile est indiqu e gauche Nord magn tique Environ 2 19 Quest du nord du quadrilage en juillet 2007 diminuant d environ Y en trois ans Donn es magn tiques fournies par British Geological Scciety Intersection latitude etlongitude des intervalles de 30 non indiqu es afin d viter toute confusion avec des d tails importants x Native fortress nown Roman antiquity Certlem Other antiquities Roman road of battle Casr frodorol 755 Limafiasth Rufeinig Hynafiasthau eraill course of woss E date Safle Forteresse Antiquit romaine Autres antiquit s Ffordd Rufeinig dyr Ee indig ne 4 Historische Andere historische cwrs Route Batlle lavac la Urzeitliche Bauten aus der Sehensw rdigkeiten romaine trao date Schauplatz Festungsarlage Romerzeit dej Romerstrabe historischer Schlachten mit Verlauf im Hillehading Ariliwio llethrau Ombrags Reliefzchattierungen Geografisch Nord Die Differenz zum Gitter Nerdpunkt der Blattecken wie links angezeigt Magnetisch Nord Etwa 2 19 W vom Gitter Nerdpu
22. e gif i di eo Weish Grounds Denny Island e Battery Point Applications 1 250 000 Scale Colour Raster combines roads railways and other key features providing the ideal geographic context either to a customer s own geographic business data overlaid on top or used in applications on its own As 1 250 000 Scale Colour Raster is aimed at professional business markets its graphic specification can provide assistance with e route planning e geographic context and e enhancing an Intranet or Internet site 1 250 000 Scale Colour Raster is supplied with a 1 250 000 scale gazetteer which lists over 25 000 place names and a digital legend key providing a useful e place name location finder and e reference resource tool RN 1 250 000 Scale Colour Raster user guide chapter 1 v2 2 5 2009 Crown copyright Page 5 of 28 Figure 2 below shows an extract of 1 250 000 Scale Colour Raster for the area around the Salisbury area with the gazetteer entries shown by inserting the National Grid coordinates supplied in the gazetteer and symbolising them with a map pin symbol Cy y ual DI Stapleford d Ar Z se D ef EE d ae nberlayne Netherhampton KS LC Regimental Badges Homington OdStock Down Figure 2 1 250 000 Scale Colour Raster and gazetteer The gazetteer supplies the customer with four categories or attributes of information They are the place name the administrative a
23. e terms and conditions under which Ordnance Survey digital map data may be processed and or manipulated or copied by a customer whether or not for use on PCs or workstations or for making hard copies are available from the Customer Service Centre please see contact details You should check the terms and conditions with us before using the data It is also the responsibility of the holder of the digital map data to ensure that any plotted or printed output contains the required copyright and database acknowledgements in a conspicuous position Using this specification The documentation is supplied in portable document format PDF only Free Adobe Acrobat Reader software which displays the specification incorporates search and zoom facilities and allows you to navigate within Hyperlinks are used to navigate between associated parts of the specification and to relevant Internet resources by clicking on the blue hyperlinks and the table of contents RN 1 250 000 Scale colour Raster technical specification introduction v2 2 5 2009 Crown copyright Page 15 of 28 Chapter1 Technical Ordnance Survey s 1 250 000 Scale Colour Raster product is based on the Road Maps series database The product is supplied as 100 km by 100 km colour tiles at high resolution for excellent image clarity It benefits from increased clarity and accuracy of detail as well a greater degree of currency across the series which has enabled the production of an ed
24. ecord the information about objects attribute attributes accuracy When testing the data according to the dataset specification against the real world or reference dataset RN 1 250 000 Scale Colour Raster user guide chapter 3 v2 2 5 2009 Crown copyright Page 10 of 28 Annexe A Case studies Creating the right environment for data management The Welsh Environmental Data Interface WENDI Agriculture forestry and woodland account for 9096 of Wales land use Generating a wealth of insightful statistical information The National Assembly for Wales uses this data to inform policy assist decision making and help deliver a wide range of services to rural communities Read more at www ordnancesurvey co uk oswebsite business casestudies pdf welsh environment data interface pdf Transport Direct Underpinning multi mode transport services Transport Direct is the first ever web portal giving instant access to comprehensive journey information by both public and private transport across Great Britain It includes a journey planner maps live travel information and onward links to coach and rail fares and ticketing services from different travel retailers As it develops the portal will also incorporate services such as information on hotels restaurants and other points of interest Read more at www ordnancesurvey co uk oswebsite products osmastermap layers itn casestudies TransportDirectcasestudy pdf 0 0 E
25. es alongside the data files that contain the National Grid corner coordinates for each 100 km by 100 km tile This is especially useful if more than one tile of data is being loaded at once as it allows for a true geographic depiction of the data When 1 250 000 Scale Colour Raster is supplied to customers it is not georeferenced in any way The implications of this are that tiles will not be set up in geographic relationship to each other when loaded into a GIS A definition for registering raster images within a geographic framework is the process of assigning map coordinates to the raster image data and resampling the pixels of the image to conform to the map projection grid This allows tiles of map data to be located in their correct geographic position relative to the map projection and also to themselves Great Britain is surveyed and mapped using the Transverse Mercator or Gauss Kruger projection so all raster tiles will be mapped to this projection as it applies to Ordnance Survey National Grid if using World or TAB files supplied by Ordnance Survey Within the MIF record header the following information will be found under COORDSYS CoordSys Earth Projection 8 79 m 2 49 0 9996012717 400000 100000 Bounds 4 17232513428e 011 7 7486038208e 011 700000 1300000 This information relates to the Transverse Mercator projection its position relative to the rest of the world and also an individual tile s position relative to the
26. eusterau tollau tramor A roport avec vols r guliers avec sans douane Flughafen mit regeimitBigem Flugverkebr mit ohne Zellabfertigung Airport with non scheduled fights with customs facilities Maes awyr heb wasanaethau hedian drefnedig gyda chyfleusterau tollau tramor A amp roport avec vols non r guliers et dcuane Flughafen mit unregelmaBigem Flugverkehr und Zolabfertigung Heliport Maes hofrenyddion H liport Hubechraubenandeplatz eo Lighthouse in use and disused Goleudy yn gweithio ac yn segur Phare en service et abandonn Leuchtturm in Betrieb oder stillgelegt National Trai Long Distance Route Long Distance Path Liwybrau Cenediasthal Tramnwyleydd Pell Liwybrau Pall Sentier de randonn e national Itin raire de randonn s Sentier de grands randonn e Nationaler Wanderweg Femwandenwe3 Fermwanderweg 0 1 250 000 Scale colour Raster technical specification chapter 2 v2 2 5 2009 Crown copyright Page 18 of 28 General information Gwybodaeth cyffredinol Informations g n rales Allgemeine Informationen BOUNDARIES FFINIAU LIMITES GRENZEN National Cenedlaethol National Staatsgrenze fas National Park Ffin Paro cenedlaethol Parc national Nationalpark Administrative Boundary maps based on Road Map sheet lines are available from Ordnance Survey Enquiries should be made to Customer HelpLine Contact details are in the Custome
27. gematched database The features include clear detail on all motorways A and B roads all cities towns and many villages Map features that occur at the edge of tiles are adjusted to align with their correspondent part on the adjacent tile This means when a map area falls over two or more tiles the map is complete or edgematched Principal communication features motorways A roads railways major rivers are edgematched across tiles Place names and locations can be identified using the 1 250 000 scale gazetteer and digital legend supplied with the 1 250 000 Scale Colour Raster Tiles Because digital maps frequently cover very large areas they are split down into squares known as tiles each of which covers part of the overall area Software hardware requirements 1 250 000 Scale Colour Raster data is inert and requires software to maximise its full potential Ordnance Survey does not specify hardware requirements as it is dependent on the software and applications within which the data will be used Customers should contact their system or software supplier for advice Specification Specification 1 250 000 Scale Colour Raster Data source Road Maps production data Number of tiles 56 edgematched Tile size 100 km by 100 km Resolution 254 dots per inch or 100 dots per centimetre Data structure Raster Transfer formats TIFF Palette 8 bit 256 colours Unc
28. horol Office de tourisme ouvert en saison Informationsburo saisonal ww Motor racing Rasio moduron Courses automobiles Autorennen Ordnance Survey amp R Museum Amgueddfa Mus e Museum Nature or forest trail Liwybr natur meu lwybr coedwig Sentier zignalis pour pistons Natur oder Waldlehrpfad Nature reserve Gwarchodfa natur R serve naturelle Naturschutagebiet Other tourist feature Atyniadau erailli ymwelwyr Autre site int ressant Sonstige Sehensw rdigkeit Park and Ride Parcio a chludo Parking et navette Park amp Ride Picnic site Safle picnic Emplacement de pique nique Pickniokplatz Preserved railway Rheilffordd a ddiogelwyd Chemin de fer touristique Muszeurnseisenbahn Pol Racecourse Maes rasio Hippodrome Pferderennbahn Skiing Sgio Piste de ski Skilaufen Theme Park Parc thema Parc th mes Point de vus Aussichtspunkt Wildife park Parc bywyd gwyllt Parc animater Wildpark Youth hostel Hostel ieuenctid Auberge de jeunesse Jugendherberge Zoo S Zoo Tiergarten 1 250 000 Scale colour Raster technical specification chapter 2 v2 2 5 2009 Crown copyright Page 21 of 28 Chapter 3 Managing 1 250 000 Scale Colour Raster files Georeferencing Georeferencing files allow tiles of map data to be located in their correct geographic position when loaded into a geographical information system GIS This is achieved by loading in fil
29. ical rules of data structure attribution and relationships Domain How closely the data values in the dataset consistency match the range of values in the dataset specification Format consistency The physical structure syntax how closely the data stored and delivered fits the database schema and agreed supply formats Topological The explicit topological references between consistency features connectivity according to specification Positional Accuracy of the Absolute accuracy How closely the coordinates of a point in the accuracy position of dataset agree with the coordinates of the features same point on the ground in the British National Grid reference system Relative accuracy Positional consistency of a data point or feature in relation to other local data points or features within the same or another reference dataset Geometric fidelity The trueness of features to the shapes and alignments of the objects they represent Temporal Accuracy of Temporal How well ordered events are recorded in the accuracy temporal consistency dataset life cycles ed ane Temporal validity Validity of data with respect to time the relationships of currency amount of real world change that has been features incorporated in the dataset that is scheduled for capture under current specifications Thematic Classification of Classification How accurately the attributes within the accuracy features and their correctness dataset r
30. liability whether for breach of contract negligence or otherwise for any loss or liability you or any third party may suffer in relying on this guide and any guidance suggestion advice or explanation provided in it Any liability that Ordnance Survey has to you in relation to the product its supply use accuracy data supplied functionality or any other liability arising out of or in connection with the product is limited as set out in your customer contract We may change the information in this guide at any time without notice We do not accept responsibility for the content of any third party websites referenced or accessed in or through this guide any contractual documentation and or the Ordnance Survey website C NENENENMENIFOENN NN 1 250 000 Scale Colour Raster user guide preface v2 2 5 2009 Crown copyright Page 3 of 28 Copyright in this guide This guide including for the avoidance of doubt any mapping images reproduced herein is Crown copyright 2009 All rights reserved Any part of this guide may be copied for use internally in your organisation or business so that you can use the product for the purpose for which it is licensed to your organisation or business but not otherwise No part of this guide may be reproduced or transmitted in any form or by any means including electronically for commercial exploitation without the prior written consent of Ordnance Survey No part of this guide may be copied or i
31. lp Annexe A Glossary accuracy The closeness of the results of observations computations or estimates to the true values or the values accepted as being true Accuracy relates to the exactness of the result and is the exactness of the operation by which the result is obtained boundary A boundary is the limit of a predefined and established area whose limit is determined by one or more lines for example county area boundary and DLUA boundary byte A unit of computer storage of binary data usually comprising 8 bits equivalent to a character Hence megabyte Mb and gigabyte Gb CAD Computer aided design character A distinctive mark an inscribed letter one of a set of writing symbols character code The binary representation of a single element of a character set for example EBCDIC ASCII compact disc read only memory CD ROM A data storage medium A 12 cm disc similar to an audio CD Ordnance Survey uses the writable CD a WORM write once read many device The digital bits are encoded into a vegetable dye and once written cannot be erased by overwriting with subsequent data A laser reads the disc coordinate pair A coordinate pair is an easting and a northing coordinates Pairs of numbers expressing horizontal distances along original axis Alternatively those triplets of numbers measuring horizontal and vertical distances Row and column numbers of pixels from raw imagery are not considered coordina
32. mgyfnewid oyfyngedig Echangsur possbilit s d intercirculation restreintes Autcbahnanschlusstele mit begrenctem riohtungswechsel Motorway under construction proposed with opening date where known Trafferdd yn cael ei hadeiladau awggrymedig gyda dyddiad agored os yn adnabyddus Autoroute en construction en projet avec date d ouverture pr vue quand connus Autobahn im bau mit vorgesehenem datum der verkehrs bergabe soweit bekannt Primary route with services area full and limited opening Prif dramwyfeydd gydag ardal gwasanasth Dual cari Itin raire principal avec aire de services horaires d ouverture limit s cu 24 heures sur 24 Flordd ddeucl Femwerkehrsstrasss mit rastetatts rund um dis uhr und eingeschr nkte SHnungszsiten Primary route with roundabout or multiple level junction full and limited interchange i e Prif dramwyteydd gyda chylchdro a chytfordd aml lefel Gamatas ofparies Itin raire principal avec rond point cu embranchement niveaux multiples changeur complet et partiel Zwedbahnige Srasze Fernverkehrastrasss mit kreissl oder mehrstufiger ansohhusastelle komplettes oder eingesohrankies autobahndreisck Primary route under construction proposed Prit dramwyfeydd yn cael ei hadeiladu awgrymedig Itin raire principal en construction en projet Femstrases im bau geplant Main road with toll and road tunnel Tel Priffordd gyda tholl a thwnel SSS C Route principale p age et tunnel routier Dual cama x Flordd dde
33. ncorporated in products services or publications that you generate for onward sale or as free promotional or support materials without the prior written consent of Ordnance Survey Data copyright and other intellectual property rights The Crown or where applicable Ordnance Survey s suppliers owns the intellectual property rights in Ordnance Survey digital map data Full details of the terms and conditions under which Ordnance Survey digital map data may be processed and or manipulated or copied by a customer whether or not for use on PCs or workstations or for making hard copies are available from the Customer Service Centre please see contact details You should check the terms and conditions with us before using the data It is also the responsibility of the holder of the digital map data to ensure that any plotted or printed output contains the required copyright and database acknowledgements in a conspicuous position Trademarks Ordnance Survey the OS Symbol and Land Line are registered trademarks of Ordnance Survey the national mapping agency of Great Britain Adobe and Acrobat Reader are registered trademarks of Adobe Systems Incorporated Arclnfo ArcView and ESRI are registered trademarks of Environmental Systems Research Institute Inc MaplInfo is a registered trademark of MapInfo Corporation Microsoft is a registered trademark of Microsoft Corporation Unisys is a registered trademark of Unisys Corporation Ba
34. nkt im Juli 2007 abmehmend um etwa t in drei Jahren Magnetischs Angaben durch de British Geclogical Saciety Sohnittpunkt Breitengrad amp Liingengrad in 30 Intervallen keine Eintragungen an Stellen mit wichtigen Kartenangaben RN 1 250 000 Scale colour Raster technical specification chapter 2 v2 2 5 2009 Crown copyright Page 20 of 28 Tourist information Gwybodaeth i dwristiaid Renseignements touristiques Touristeninformation TOURIST INFORMATION GWY BODAETH DWRISTIAID RENSEIGNEMENTS TOURISTIQUES TOURISTENINFORMATION Abbey Cathedral Priory Abaty Eglwys Gadeiriol Priordy Abbaye Cath drale Prisur Abtei Kathedrale Pricrei Aquarium Acwariwm Aquarium Aquarium A Camp site Safle gwersyll Terrain de camping Campingplatz 3 Caravan site Safle carafanau Terrain pour caravanas Wehnwagerplatz Qh Camping and caravan site Safle carafanau a gwereyll Terrain de camping et terrain pour caravanes Campingplatz und Wchnwagsneite Castle a Castell Chateau Schloss Burg Cave Ogof Caveme Hehe W Country park Paro gwledig Paro naturel Landschafts park yP Craft centre Canclfan grefft Centre artisanal Zentrum f r Kunsthandwerk se Garden Gardd Jardin Garten p Golf course or links Owrs neu lain golff Terrain de golf Golfplatz ft Historic house Ty hanesyddol Manor Palais Historisohes Geb ude FZ Information centre seasonal Canclfan gwybodaeth tym
35. ompressed TIFF Palette 8 bit 256 colours with LZW compression Storage volumes Great Britain 880 Mb are approximate Uncompressed England SE RGB 256 Scotland 416 Mb colours Wales 128 Mb Compressed Great Britain 128 Mb RGB 256 colours England 78 Mb Scotland 52 Mb Wales 25 Mb Update frequency Annual June Specification 1 250 000 scale gazetteer Data source 1 250 000 scale topographic data Data structure ASCII list table format four columns settlements admin area eastings and northings six figure reference Transfer formats Text file Storage volumes 1 04 Mb 48 000 names approx o 1 250 000 Scale colour Raster technical specification chapter 1 v2 2 5 2009 Crown copyright Page 16 of 28 Chapter2 Legend 1 250 000 Scale Colour Haster Legend Legend L gende Legende Communications Cysylltiadau Communications Verkehrswege ROADS FFYRDD ROUTES STRASSEN Net necessarily rights of way Pas n cessairement de droits de paszags Nicht unbedingt durchfahrtberechtigt Motorway with service area service area limited acosss and junction with junction number Traffcrdd gydag ardal wasanaeth a mynediad clyngedig a chyffordd gyda rhif cyffordd Autoroute avec aire de serios aire de service acc s r glement et changeur avec son num ro Autobahn mit servicestation servicestation mit begrenztem zugang und anschlusstelle mit nummer Motorway junction with limited interchange OyHord traffordd ag y
36. or film or microfilm produced mainly or wholly using computerised means digital map data The digital data required to represent a map The data includes not only map detail but also features header data map header data and management data dots per inch dpi The resolution or fineness of a raster image eastings See rectangular coordinates extent of the realm EOR The external bounding lines of Land Line data is EOR The Territorial Waters Jurisdiction Act 1878 and the Territorial Waters Order in Council 1964 confirm that EOR of Great Britain as used by Ordnance Survey is properly shown to the limit of mean low water mean low water springs in Scotland for the time being except where extended by Parliament feature An item of detail within a map that can be a point or symbol a line or text file An organised collection of related records The records on a file may be related by a specific purpose format or data source the records may or may not be arranged in sequence A file may consist of records fields words bytes characters or bits font The style of text character used by a printer or plotter format The specified arrangement of data For example the layout of a printed document the arrangement of the parts of a computer instruction the arrangement of data in a file geographical information system GIS A system for capturing storing checking integrating analysing and displaying data that is
37. our chaque 100 km carr Les num ros de quadrilage bleus sont indiqu s des intervalles de 100 km Par exemple le coin en bas gauche du carr SN se trouve 200 km l est et 200 km au nord de l origine du quadrilage national De blauen Buchstaben stellen sins nationale Rasterreferencbszsichnung pro 100 Quadratkilometer dar Die blauen Zahlen der Rasterquadrate entsprachen jeweils 100 krrEntfernungen Beispielsweise befindet sich die untere linke Ecke des Quadrats SN 200 km etlich und 200 km n rdiich des nationalen Rasterausgangs WATER FEATURES ARWEDDION D R PIECES D EAU WASSERLANDSCHAFTS ZEICHEN aS 4 Ship Llong Bateau Schiff Catamaran Catamaran Catamaran Katamaran Ferry route for vehicles Liwybrau Feriau cerbydau Travers amp e en ferry pour v hicules KFZ Fithrtraneport High Water Mark Maro penllarw Ligne des hautes eaux Flutmarkierung Marsh Corsydd Marais Sumpfland Se TD Lake and river Llyn a Afon Lac et rivi re Ses und Fluss Canal Camlas Canal Kanal ad Light vessel Goleulong Bateau phare Boctsverkehr RN 1 250 000 Scale colour Raster technical specification chapter 2 v2 2 5 2009 Crown copyright Page 19 of 28 General information Gwybodaeth cyffredinol Informations g n rales Allgemeine Informationen ANTIQUITIES HYNAFIAETHAU ANTIQUIT S HISTORISCHE SEHENS W RDIGKEITEN
38. r Information section Gellir cael mapiau Ffiniau Gweiryddol sydd yn zellisdig ar linellau dalennau y Mapiau Ffyrdd o r Arolwg Ordnans Dylid ymholi drwy gysylltu a Llinell Gymorth Cwesmeriaid Maer manylion ar gasl yn yr adran Gwybodaeth Cwsmeriaid Les cartes des limites administratives bas es sur les cartes routi res cont disponibles aupr s d Ordnance Survey Pour tout renseignement t l phonez la ligne assistance Clients Les coordonn es des personnes joindre sont indiqu es la rubrique Informations Client Landkarten mit verzeichneten Verwaltungsgrenzen auf der Grundlage der StraBenkartenzuschnitte sind ber Ordnance Survey erhaltlich Ihre Anfragen richten Sie bitte an dis Customer HelpLine Sie finden dis n tigen Kontaktangaben im Abschnitt Kundeninformation Customer Information NATIONAL GRID GRID CENEDLAETHOL QUADRILLAGE NATIONAL NATIONALEN RASTERAUSGANGS The blue letters represents a national grid reference for each 100 km equare The blue grid numbers are at 100 km intervals For example the bottom left corner of square SN is 200 km east and 200 km north of the National Grid origin Mae r liythrennauglas yn cynreichicli cyfeirnod grid cenedlaethol ar gyter bob sowar 100 km Mae rhifau grid glas bob 100 km Er engtiraifft mae cornel gwaelod chwith sowar SN yn 200 km i r dwyrain a 200 km i r gogledd o ddechrau Grid Cenedlaesthol Les lettres bleues repr sentent un quadrillage de r f rence national p
39. rea within which it lies and National Grid references As an example of the contents of the gazetteer the information for Salisbury is shown in table 1 Attribute Value Name Salisbury County WILTSHIRE Easting 414 940 Northing 129 700 Table 1 System requirements Computer hardware This product may be used on a wide range of hardware platforms provided sufficient memory and storage facilities are available varying from desktop PCs using GIS to mainframe computers with specialised translators and applications Computer software 1 250 000 Scale Colour Raster is supplied as inert data and does not include software for data manipulation To exploit fully the potential of 1 250 000 Scale Colour Raster it is necessary to use appropriate application software RN 1 250 000 Scale Colour Raster user guide chapter 1 v2 2 5 2009 Crown copyright Page 6 of 28 Supply and formats The data is supplied on CD and is updated and released annually in June It is supplied as full national coverage or as England Scotland or Wales separately 1 250 000 Scale Colour Raster is supplied in two tagged image file formats TIFFs e TIFF Uncompressed RGB 256 colours and e TIFF with LZW compression RGB 256 colours If LZW compressed formats are used then registration may be required Guidance on the Unisys is available on the Unisys website at www unisys com about unisys Izw Customers are advised to contac
40. reat Britain England Scotland Wales 56 tiles 29 tiles 26 tiles 8 tiles There are overlaps for England Scotland and Wales and this accounts for a total number of tiles for all three countries as 62 Uncompressed 448 Mb 416 Mb 128 Mb Compressed 128 Mb 52 Mb 25 Mb Image compression When an image is compressed the data is analysed duplicated data can be removed or saved in a shorter form as part of the compression process and therefore reducing a file s size For example if large areas of water are the same tone only the value for one pixel needs to be saved together with the locations of the other pixels with the same colour When the image is edited or displayed the compression process is reversed When raster is compressed not only are the data volumes reduced but the user can download display edit and transfer images more quickly There are two forms of compression lossless and lossy Lossless compression As its name suggests lossless compression does not lose information within an image A lossless compression retains the original quality of an image when it is uncompressed This process doesn t provide much compression so file sizes remain large Lossless compression is used mainly where detail is important such as when planning to make large prints Lossy compression This process degrades images to some degree meaning that the decompressed image isn t quite the same as the origin
41. site at www ordnancesurvey co uk This document has been screened in accordance with the requirements set out in Ordnacne Survey s Equality scheme If you have difficulty reading this information in its current format and would like to find out how to access it in a different format Braille large print computer disk or in another language please contact us on 44 0 8456 05 05 05 Use of the product The terms and conditions upon which the product including this guide is made available to you and your organisation are contained in the customer contract made between you and Ordnance Survey If there is an inconsistency between the terms of your customer contract and this guide then the terms of your customer contract prevail If you or your organisation has not signed a valid current customer contract then you are not entitled to use the product Purpose and disclaimer This guide is provided for guidance only and does not constitute any warranty representation undertaking commitment or obligation express or implied about the product or its suitability for any particular or intended purpose Any warranties representations undertakings commitments and obligations given by Ordnance Survey about the product and or its suitability for any particular or intended purpose are set out in your customer contract It is your responsibility to ensure that this product is suitable for your intended purpose Ordnance Survey does not accept any
42. sseeeee 11 Transport Direct mere n nr enin nenne ers n s nn sn nene nr nnne nennen 11 Underpinning multi mode transport services sssssssssseeeen ees 11 cierre EE 12 Product and service performance report form seseseeseseee enne 13 v2 2 5 2009 D05300 17 1 250 000 Scale Colour Raster user guide contents v2 2 5 2009 Crown copyright Page 2 of 28 Preface This user guide hereafter referred to as the guide is designed to provide an overview of 1 250 000 Scale Colour Raster hereafter referred to as the product and it gives guidelines and advice on how a customer might derive the maximum benefit from the product It assumes a general knowledge of geographic information If you find an error or omission in this guide or otherwise wish to make a comment or suggestion as to how we can improve the guide please contact us at the address shown below under contact details or complete the product and service performance report form at annexe C and return it to us Contact details Our Customer Service Centre will be pleased to deal with your enquiries Customer Service Centre Ordnance Survey Romsey Road SOUTHAMPTON SO16 4GU General enquiries calls charged at local rate 08456 05 05 05 Dedicated Welsh Language HelpLine 08456 05 05 04 Textphone deaf and hard of hearing users only please 44 0 23 8079 2906 Email customerservices ordnancesurvey co uk or visit the Ordnance Survey web
43. t their system suppliers to ensure that their software can support this mode of compression before placing an order RN 1 250 000 Scale Colour Raster user guide chapter 1 v2 2 5 2009 Crown copyright Page 7 of 28 Chapter2 Key features Scale 1 250 000 Scale Colour Raster is designed to be nominally viewed at 1 200 000 scale Coverage Great Britain England Scotland and Wales Source of 1 250 000 Scale Colour Raster 1 250 000 Colour Raster is derived from the 1 250 000 scale topographical digital database Features e Shows all cities towns and many villages as well as features in the Ordnance Survey Road Map series including all motorways and A and B roads enabling simple route planning e High resolution for excellent image clarity e Supplied with a 1 250 000 scale gazetteer text file and digital PDF legend key to help find place names and locations Currency 1 250 000 Scale Colour Raster data is derived from the latest available version of Ordnance Survey s databases The 1 250 000 Scale Colour Raster dataset is refreshed annually Resolution Each data tile is converted into a raster tile at a resolution of 10 dots per mm dpmm 254 dots per inch dpi and a pixel is 25 metres on the ground This resolution maintains the necessary clarity of text Georeferencing To be able to view each tile in the correct geographic relation to the National Grid and to each other the tiles must be georeferenced GIS t
44. tes for the purpose of the standard copyright Copyright is a legal property right that enables the creator of an original work to protect it from unauthorised use Through the Copyright Designs and Patents Act 1988 Crown copyright continues to subsist in all Ordnance Survey products until the end of the period of 50 years from the end of the year in which they were published and in the case of data from the end of the year in which it was extracted from the Ordnance Survey database Crown copyright is vested in The Controller of Her Majesty s Stationery Office who has delegated powers to the Director General Ordnance Survey for the administration of copyright in publications and data including the determination of terms and conditions under which permission for their reproduction is given currency An expression of the up to dateness of data customer An organisation or individual that makes use of Ordnance Survey s data supply facilities This includes both direct sales customers of Ordnance Survey as well as customers of Licensed Partners It does not include anyone or any organisation that has access to Ordnance Survey material without charge data A representation of facts concepts or instructions in a formalised manner suitable for communication interpretation or processing data capture The encoding of data In the context of digital mapping this includes map digitising direct recording by electronic survey instruments and
45. ucl Hauptstrasse mit strassentunnel und strassenbenutzungsgek hr Main road with rcundabcut or multiple level junction geg Priffordd gyda chylchdro neu gyffordd ammt efel Damme ofpar ns Route principale avec rond point sens gratcire cu changeur Iwebahige Strasze Hauptstrasse mit kreisverkehr oder ansohlusstelle Main road under construction proposed Priffordd yn cael ei hadeiladu 393 R ae Ge x Route principals en construction en projet Hauptstrasse im bau geplant Tee Secondary road with gradient steeper than 1 in 7 er 14 Ffordd eilaidd gyda graddiant 1 mewn 7 neu serthach Chauma es s par es Route secondare aveo pente sup rieure 1 pour 7 cu 14 Iwebahmige Strasse Nebenstrasse mit steigung ber 14 Narrow road with passing places 314 Ffordd gul gyda lleoedd pasio nemi a EE Baute troite avec voies de d passement Enge strassa mit ausweichstelle Road generally more than 4m wide Ffordd zip letach na 4m yn gyfiredinol Route gsn ralement de plus de 4m de largeur Strasse im allg aber 4m breit Road generally leas than 4m wide Ffordd zip gulach na 4m yn gyfiredinol Route g n ralement de moins de 4m de largeur Strasse im allg unter 4m breit Road with restricted access Ffordd gyda mynediad gyfyngedig Route avec aco s limit Strasse mit beschrinktem zugang Distances in miles between markers Pellteroedd mewn milltirosdd rhwng marcw yr 8 24 12 Distances en miles entre les marques
46. ypically provide georeferencing as part of their functionality but for each set of tiles it is necessary to provide the information on how the tiles should be ordered Ordnance Survey provides this information in a set of georeferencing files also known as world files A complete set for 1 250 000 Scale Colour Raster is available to download free of charge from the 1 250 000 Scale Colour Raster product page on the Ordnance Survey website these are also supplied with the product written to CD There is more than one type of world file Prior to downloading one of the sets customers are advised to check with their system suppliers to find out which type their system supports The conventions behind the files creation can be found in chapter 3 of the technical specification By using the conventions outlined there this means that other datasets using the same conventions can be imported into the same GIS to add value to the raster map So for example overlaying a routing or logistics network over the map or displaying a customer s demographic information The georeferencing files should be saved in the same directory as the files of the map tiles themselves Data compression TIFF data volumes are influenced by the level of data compression The table below shows the various sizes by area supplied o 1 250 000 Scale Colour Raster user guide chapter 2 v2 2 5 2009 Crown copyright Page 8 of 28 Storage volumes are approximate G
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