1. Using data from Digimap in ArcGIS
What OS data is available in Digimap?
How do I unzip and convert the data for ArcGIS?
What is ArcGIS?
Styling options
Digimap OpenStream
Other resources

2. Data in Digimap – what’s available?
Range of OS map data:
Backdrop maps
Land & height data
Vector data
Place name and road name databases
MasterMap vector data, GML format
Administrative boundaries and postcode data

3. Data in Digimap – 2 types

4. Data Download - raster data

5. Data Download – Land and height data

6. Data Download - Vector data

7. Data Download - Location data

8. MasterMap Download Most detailed mapping available of GB
Scale 1:1250 to 1:10000
Widely used by architects and planners
NOTE: MasterMap Download provides vector format MasterMap. Raster format MasterMap is available in Data Download.
Topography Layer is a detailed, intelligent, geographic database. It contains almost half a billion features from the built and natural landscape of Britain.
Detailed and surveyed to a high degree of accuracy, the Topography Layer is continually revised to incorporate changes to the urban and rural environment. It consists of nine themes: land area classifications; buildings; roads, tracks and paths; rail; water; terrain and height; heritage and antiquities; structures; and administrative boundaries.
The ITN Layer is a detailed, accurate and up-to-date digital dataset consisting of a Roads Network theme and a Road Routing Information (RRI) theme for Great Britain.
The Roads Network contains road categories, from motorways and primary routes to named and unnamed minor roads and local streets.
RRI contains features such as height, weight and width restrictions; traffic calming; turn restrictions; and one-way roads as well as vehicular access and time restrictions.
Other OS Layers – not available within Digimap
Address Layer
The most complete national address dataset for the whole of Great Britain.
Imagery Layer
The OS MasterMap Imagery Layer is a maintained dataset of  high-quality aerial photography and provides a detailed aerial map of Great Britain.

9. MasterMap Download
Ordnance Survey have 4 layers of MasterMap data (Topography, Imagery, ITN and Address Layer)
Digimap offers two of these layers:
Topography layer
Integrated Transport Network (ITN) layer

10. Boundary Download products
Code-Point – postcode listings or postcode polygons
Boundary lines – e.g. counties, unitary authorities, electoral areas
National GB boundaries
Code-Point consists of two separate elements, Code-Point itself and Code-Point polygons:
Code Point provides a National Grid reference for each unit postcode in Great Britain. Multiple postcodes in a single block of flats or offices will share one National Grid reference. With each co-ordinated point there is information about the postal delivery points within the postcode unit and codes for a number of administrative boundaries, which coincide with the postcode unit. It is Code-Point that is used in Digimap when a postcode search is entered to locate a map.
Code-Point polygons represent postcode unit boundaries in Great Britain. The boundaries are derived from ADDRESS-POINT®, an Ordnance Survey product which provides a National Grid co-ordinate for each postal delivery address in Great Britain. Each postcode unit boundary is created to surround all addresses with the same postcode. Where appropriate, the boundaries follow major roads, railways, rivers and Royal Mail postcode sector boundaries. Often, tower blocks or similar buildings will be assigned with more than one postcode. Such buildings are called vertical streets and are represented in the polygon dataset as small squares. A separate look-up table links postcodes to vertical streets using a unique vertical street reference code. Some postcode units are omitted from the dataset, due to issues of accuracy or because they are PO boxes (i.e. non-geographic postcodes). These are listed in separate tables, included with the Code-Point polygons.
Boundary-Line is the key dataset of administrative and voting boundaries in Great Britain. Available in NTF, SHP and MIF / MID formats. Differences in the download for different formats:
The NTF files available for download are divided by area. There are individual NTF files for each County, Unitary authority and European Region of Great Britain. NTF files for each County and Unitary Authority contain all the boundaries for all the other datasets within them. These datasets will vary depending on the country that the area is in.
Shape and MID/MIF files have Great Britain wide coverage for each boundary type; e.g. A Shapefile of all the European Regions or a MID/MIF file of all the Westminster Parliamentary Constituencies.
County
County Electoral Divisions
District Borough Unitary Authority
District Borough Unitary Authority Wards
European Regions
Greater London Constituencies
Scotland and Wales Constituencies
Unitary Authority Electoral Divisions
Westminster Constituencies

11. Code-Point
Code-point data, on 1:10000 Scale Raster background

12. Code-Point Polygons
Code-Point data and Code-Point Polygons, on 1:10000 Scale Raster background

13. Boundary lines sample Raster map of Edinburgh
Scotland constituency boundary lines overlaid

14. Using data from Digimap in ArcGIS
What OS data is available in Digimap?
How do I unzip and convert the data for ArcGIS?
What is ArcGIS?
Styling options
Digimap OpenStream
Other resources

15. How do I use this data in ArcGIS?
1. Download
data from Digimap (zip file)
Unzip data file
Convert the data to a format compatible with your software - if necessary
2. Process
the data
3. Import data to
ArcGIS
4. Analyse data /
Create
map

16. Unzipping standard Digimap zip files
Use the standard Windows unzip facility:

17. Unzip standard Digimap zip files

18. Unzip MasterMap zip files
Data is delivered in GZip file - GML data within the Gzip
Can extract the GML file from the Gzip file…not always necessary to do this

19. Data in Digimap - what formats?
GML
TIFF, SHP, NTF, GML, MIF/MID, DXF, CSV, ASC
SHP, NTF, CSV, MIF/MID

20. Data in Digimap – what formats?
Some products are available in more than one format, e.g. Strategi is available in NTF, DXF, SHP and MID/MIF

21. What formats are compatible with ArcGIS?
Raster data products are available in TIFF format
Compatible with ArcGIS

22. What formats are compatible with ArcGIS?
TIFF World files - contain the location, scale, and rotation of a map that is stored as a TIFF image.
Remember to keep the supplied TIFF files and the TFW files in the same folder! Otherwise your GIS software cannot locate the TIFF geographically.

23. What formats are compatible with ArcGIS?
Shape files do not require any conversion prior to use in ArcGIS.
Remember to keep all constituent parts together - SHP, DBF, SHX:

24. What formats are incompatible with ArcGIS?
NTF:
OS Land-Form Profile – convert to ESRI Geodatabase
OS Land-Form Panorama – convert to ESRI Geodatabase
OS Meridian 2 – SHP files available
OS Strategi – SHP files available
OS Code-Point – CSV files available
OS Boundary Line – SHP files available
GML: OS MasterMap, OS VectorMap Local

25. Converted file for use in ArcGIS Original file from Digimap
NTF data
Convert to ESRI Personal Geodatabase format (.MDB suffix), using Productivity Suite or Map Manager (ESRI tools).
Converted file for use in ArcGIS
Original file from Digimap

26. Productivity Suite, NTF Convertor
Available through Eduserv CHEST:
ESRI Productivity Suite (ArcGIS V9.2 or later)
Map Manager (ArcGIS V9.1 or earlier)

27. 2 data products are in GML format: OS MasterMap data
GML data
2 data products are in GML format:
OS MasterMap data
OS VectorMap Local data
It is possible to import GML/GZ files to ArcMap 10. However, in our experience it is trickier to isolate features, analyse the data, change the style when using this method. We recommend that you convert the data if possible.

28. OS MasterMap conversion
Possibilities:
Convert to ESRI Geodatabase format using Productivity Suite (ArcGIS V9.2 or later) or Map Manager (ArcGIS V9.1 or earlier)
Convert to Shapefile format using InterpOse

29. Productivity Suite, OS MasterMap Data Convertor
Available through Eduserv CHEST:
ESRI Productivity Suite (ArcGIS V9.2 or later)
Map Manager (ArcGIS V9.1 or earlier)

30. OS MasterMap Convertor
Converts OS MasterMap data to ESRI Personal Geodatabase format
Accepts GZip files for conversion

31. InterpOse Digimap edition
Free download, which converts MasterMap GML data to SHP file format (and various other formats)
InterpOse accepts GZip files for conversion

32. OS VectorMap Local conversion
Free download:
Converts OS VectorMap Local to Shape file format
Accepts GZip files

33. Gazetteer data – available in Data Download
Delivered in CSV file
Saved as DBF IV, using Excel 2003
N.B. DBF IV option not available in Office 2010 – try Open Office spreadsheet

34. Using data from Digimap in ArcGIS
What data is available in Digimap?
How can I use this in ArcGIS?
What is ArcGIS?
Styling options
Digimap OpenStream
Other resources

35. What is ArcGIS? Desktop Geographic Information System
3 levels of license
Applications within license:
ArcMap explore/analyse data and make maps.
 ArcCatalog data management 
ArcToolbox™ tools for data/spatial analysis

36. ArcMap Table of contents – view data layers Map display panel
Toolbar – open ArcCatalog and ArcToolbox here
Table of contents – view data layers
Map display panel

37. Using data from Digimap in ArcGIS
What data is available in Digimap?
How can I use this in ArcGIS?
What is ArcGIS?
Styling options
Digimap OpenStream
Other resources

38. Appearance of vector data
MasterMap data viewed in ArcMap
Vector data (e.g. OS MasterMap, OS VectorMap Local) will not have the same appearance as it does in Digimap, when initially added to ArcMap

39. Appearance of vector data
Possible to apply style (or symbology) files to the data, to replicate the Digimap style

40. Symbology, or style, files
InterpOse – provide style files for use with ArcGIS and MapInfo, which can be installed to your computer on setup of InterpOse
Rolta - provide style files with the installation
Productivity Suite, Map Manager – style files supplied
EDINA supply style files for several data products – find these in the Help pages.

41. EDINA Symbology, or style, files
OS data:
MasterMap, Strategi, Land-form Panorama, Meridian, Land-Line – in Help under Using data with ArcGIS 9.x
Geology Digimap – bundled with data download file. 1 avl file for each Shape file.
Marine Digimap – download Fonts files and Style file from Marine Digimap Help pages and copy into relevant folders in C:/Program Files.

42. Using data from Digimap in ArcGIS
What data is available in Digimap?
How can I use this in ArcGIS?
What is ArcGIS?
Styling options
Digimap OpenStream
Other resources

43. Digimap OpenStream

44. Digimap OpenStream Free service to anyone with .ac.uk email address
Must register to use the service
Allows users to stream certain OS data sets directly to their software without downloading and storing large quantities of data
Digimap OpenStream provides access to the following OS OpenData products:
MiniScale®
1:250,000 Scale Colour Raster
OS Vector Map™ District (Raster)
OS Street View®

45. Digimap OpenStream

46. Digimap OpenStream API key
Add my API key to the OpenStream URL:
Setup this URL in my GIS > allows me to stream OS data

47. YouTube videos

48. Using data from Digimap in ArcGIS
What data is available in Digimap?
How can I use this in ArcGIS?
What is ArcGIS?
Styling options
Digimap OpenStream
Other resources

49. Digimap OS Collection Help

50. YouTube

51. Digimap Training Materials
EDINA Training guides:

52. Ordnance Survey website
General product information:
Guidance on software for use with OS MasterMap: