Digimap – Data Download Ordnance Survey Collection 11 November 2015 Ian Holmes, EDINA Geo User Support

Content Data Download Issues and tips: Overview of available map data Ordering map data with the data download services Contents of your download file Support resources on using data in GIS/CAD Issues and tips: Using Roam to identify map products Unzipping Formats Tile sizes

Overview of available map data Ordnance Survey Collection Almost all OS products including (Open and Licensed Data) Including: MasterMap Topography Layer (most detailed GB mapping available) Terrain 50 and Terrain 5 (DTM and contour datasets) 1:25,000 and 1:50,000 scale rasters (outdoor leisure maps) Code-Point with Polygons – postcode boundaries Building Height Attribute – heighted building dataset (alpha release)

Digimap OS Collection Roam: view, annotate, print maps at a range of fixed scales Data Download: download mapping data for use in GIS/CAD

Data Download Download several map products in one order Map data grouped in to categories 3 steps to order map data: Select Area Select Data Add to Basket

Data Download Categories Click + or on category name to open and see available map data products: OS MasterMap – most detailed topographic mapping of GB, transport network, building heights, important sites Background Mapping – raster maps at range of scales, all in TIFF format Land and Height Data – contours and Digital Terrain Models (DTMs) Vector Data – range of scales and formats Boundary and Location Data – administrative boundaries, postcode data, gazetteers, Points of Interest Withdrawn Datasets – datasets no longer updated by Ordnance Survey but still available

1. OS MasterMap Vector map product(s), most detailed mapping available of GB: Integrated Transport Network layers – GML format only. Sites Layer – polygon dataset of important sites e.g. schools, health centres etc. Topography layer – most detailed mapping: GML, DWG and File Geodatabase formats. Building Heights data added in 2014. CSV or KML format. Scotland’s Greenspace Map – based on Topography Layer OS MasterMap Topography Layer OS MasterMap Topography Layer: Building Height Attribute

2. Backdrop Mapping Raster map products – useful as backdrop 10 products available All in TIFF image format Largest scale at top, 1:1000 GB Overview smallest scale – 1:1000000 1:25,000 Colour Raster 1:50,000 Colour Raster

3. Land and Height data OS Terrain 5 and Terrain 50 most up to date Digital Terrain Models (DTMs) useful for 3D modelling of terrain Formats vary between products; PANORAMA available in native CAD formats PROFILE still available in ‘Withdrawn Datasets’ section, which is also available in CAD formats OS Terrain 50 (contours)

4. Vector Data Largest scale - VectorMap Local 1:10000. Smallest scale - Strategi, 1:250000 Formats vary between products, e.g.: Vector Map Local – GML, DWG, SHP Strategi – SHP, DXF, TAB, NTF, MIFMID Tile sizes: Strategi, Meridian 2 National – get all of GB Vector Map District - 100x100km tiles

5. Boundary and Location Data Points of Interest – point locations of services and facilities Boundary-Line – administrative boundaries e.g. counties, unitary authorities, electoral areas Code-Point – postcode centroid coordinates and polygons (Code-Point with Polygons) OS Locator – gazetteer of road names. CSV. OS Open Names, 1:50,000 Scale Gazetteer – place name databases Grid Squares and Outlines - National Grid square and outlines for GB

6. Withdrawn Datasets Datasets no longer updated by Ordnance Survey but still available through Digimap

Using Data Download 3 step process: Select area Choose data Add to basket Options to change format, version and layers It’s straightforward to use Data Download – ordering map data involves 3 steps: Select your area on the map – there are 4 methods for selection. The shaded orange area you see here is our selected area. Select the map data that you wish to download. You can open any category of map data by clicking on the name. Then it’s a matter of ticking the box next to any map data you wish to download. You can download as many as you like in an order, provided you do not exceed the allowances. There is an allowance for each map data product – in order that our servers can process orders as quickly as possible. Third step is to add to basket. Once you click the add to basket button, your basket pops up on screen. You can then select from different formats, date versions and map layers, where available. Options will different depending on map product.

Product Information and availability grids Scale, version, format availability, data allowance, tile size and Terms of use Click Show Overlay to display availability grid on map Click More Info to view help page specific to the product Availability Grids: Display availability and tile boundaries of each product

Basket options Dataset options: Version – dataset version as released by Ordnance Survey Format – note different datasets available in different formats Theme – some datasets are available in different styles e.g. full colour and line drawing Layers – use this to download some features from the full dataset, e.g. just building features from OS MasterMap Topography Layer

Data formats Format Compatibility DXF, DWG CAD drawing formats File Geodatabase ArcGIS, QGIS MIF/MID MapInfo format NTF National Transfer format, non-proprietary. Older format, developed in 1990s. GML Geography Markup Language, non-proprietary SHP Shape file, ArcGIS format but can be read by most GIS applications including AutoCAD Map 3D TIFF TIFF image format, used for background mapping products http://digimap.edina.ac.uk/webhelp/os/osdigimaphelp.htm#data_information/data_formats/formats_available.htm

Email notifications 1st email acknowledges receipt of order 2nd email when data is ready to download Length of time to extract data depends on extents and data format selected Data available to download for 3 days, but can re-order at any point using ‘My Previous Downloads’ button

Unzip standard Digimap zip files You will download 1 zip archive file for each order you place in Data Download Use the standard Windows unzip facility to unzip and extract the file contents to a location on your computer

Unzip standard Digimap zip files Zip archive file contents: Sub-folder for each map product in your order Citations and contents text documents at top level

Sub-folder contents Within each sub-folder, data files and conditions of use text file. Data from Digimap OS is covered by the Digimap licence OR the OS OpenData licence. So each data folder has a conditions document that specifies which conditions apply. NOTE: for some products, the map data will be zipped in the sub-folder. Image of Vector Map District data. Check before you try to add it to your software!

Issues and tips Using Roam to identify map products Formats – getting the right format Tile sizes - map data products are provided in different tile sizes

Using Roam to identify map products Map Information panel shows name of the current map product

Formats and conversion guidance http://digimap.edina.ac.uk/webhelp/os/osdigimaphelp.htm#data_information/data_formats/new_data_translators.htm

List of available formats http://digimap.edina.ac.uk/webhelp/os/osdigimaphelp.htm#data_information/data_formats/formats_available.htm

Tile sizes Map data from Digimap is typically provided in tiles that have been referenced to the British National Grid - exceptions are OS MasterMap vector data, gazetteers, products provided with national coverage such as Boundary-Line. Data from Digimap is in a range of sizes, from 1 x 1 km tiles to 100 x 100 km tiles. Typically the more detailed the map data, the smaller the tile size, e.g.: Product Tile size 1:50000 raster 20 x 20 km 1:250000 raster 10 x 10km Vector Map Local 1:10000 5 x 5km Vector Map District 1:50000 100 x 100 km Last Amended: 3 September 2001

Merging tiles Where tiles are provided in smaller sizes, e.g. 5 x 5 km, possible to merge them into one Image: OS Terrain contours in ArcMap, for area of South East England

Clipping tiles Where tiles are provided in large sizes e.g. 100 x 100 km, possible to clip them to smaller area Image: Vector Map District clipped to smaller area in ArcMap

TIFF files Raster data (backdrop mapping) all supplied in TIFF image format, with a TFW file TIFF World Files contains location, scale and rotation of TIFF map. Keep in same folder as TIFF files!

Shape files ArcGIS format, can be used in other software too. Remember to keep all constituent parts together - SHP, DBF, SHX, PRJ. Image of folder containing VectorMap Local shape files

Available datasets and dates http://digimap.edina.ac.uk/webhelp/os/osdigimaphelp.htm#data_information/os_data_issues/os_update_dates.htm

Support Resources Digimap Resource Centre: GIS/CAD help pages: http://digimap.edina.ac.uk/webhelp/resources/index.html Guides FAQs Videos Case Studies GIS/CAD help pages: http://digimap.edina.ac.uk/webhelp/digimapgis/index.htm Live chat facility, during office hours Email/Telephone support: edina@ed.ac.uk 0131 650 3302

Overview of available map data Environment Collection Data from Centre for Ecology and Hydrology (CEH) Land Cover Maps of Great Britain and Northern Ireland 2007 2000 1990 Vector and raster formats

Overview of available map data Geology Collection Data from British Geological Survey (BGS) Offshore geology Onshore geology from 1:10,000 to 1:625,000 scale Soil parent material Superficial deposit thickness Onshore borehole index Geological indicators of flooding

Overview of available map data Historic Collection Historic OS mapping dating back to 1846 from Landmark Information Group County Series maps published between 1846 and 1969 National Grid maps published between 1943 and 1996 Selected Town Plan maps published between 1848 and 1939

Overview of available map data Marine Collection Data from SeaZone Solutions Ltd. HydroSpatial One - authoritative vector digital marine mapping data Hydroview Charts - raster GeoTiff UK Admiralty Charts at various scales (not for navigational use)

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