Using data from Digimap in ArcGIS

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Slides used in a Digimap webinar in February 2013. Covers available map data in the Digimap Collections (subscription services for UK further and higher edcation) and its use in ArcGIS. Information on data formats, data conversion tools and data styling.

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  • 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.
  • Using data from Digimap in ArcGIS

    1. 1. Using data from Digimap in ArcGIS • Digimap OS Collection services • Data Download: formats and conversion guidance • Styling vector data • Desktop sharing: – Add data to ArcMap – Style vector data in ArcMap – Add in data from Digimap OpenStream • Resources
    2. 2. Digimap OS Collection • Make maps to view online, download PDFs • Download OS mapping data
    3. 3. Roam Map tools: hill shading, measure, annotate, print Task menu: Search, Map Content, Map Info, My Maps
    4. 4. Annotation tools • Toolbar appears at the top of the screen – can be moved around • Main options to add annotations in the Draw & Create area – add symbols, text, lines, polygons, pre-defined shapes • Annotations remain on your map at the same scale as you zoom in and out
    5. 5. Sample of annotations • Add symbols, text, lines, polygons, measurements, pre-defined shapes • Annotations remain on your map at the same scale as you zoom in and out
    6. 6. Annotations options • Make visible on PDF print • Save annotations within Digimap (can retrieve and display annotations in any Roam service e.g. Ancient Roam) • Export formats: Shapefile, KML, GeoJSON • Import formats: Shapefile, KML, GPX, CVS, GeoJSON
    7. 7. Data Download services • Users can download a wide range of OS map data products in Data Download • MasterMap Download is for OS MasterMap data in GML (vector) format • Boundary Download provides OS postcode and boundary lines From 5th Feb, all available in Data Download – all services will continue to be available for a period
    8. 8. Updated data • Used to be one annual update - now update data more regularly • Recently added Jan 2013 versions of Miniscale, Strategi and Meridian 2 • Select preferred version in Data Download
    9. 9. Available datasets and dateshttp://digimap.edina.ac.uk/webhelp/os/data_information/os_data_issues/os_update_dates.htm#
    10. 10. Data Download service, 3 step process 1. Select area 2. Select maps 3. Add to basket (format and date options)
    11. 11. Basket options • Click Change to select format and map date
    12. 12. Issues for Digimap users • Compatibility - some vector map data formats available from Digimap may not be compatible with your GIS/CAD software • Styling of data – vector map data downloaded from Digimap will not have a cartographic style, when viewed in GIS/CAD
    13. 13. Vector data formats Format Compatibility SHP Shape file, ArcGIS format MIF/MID MapInfo format NTF National Transfer format, non-proprietary GML Geography Markup Language DXF Drawing Exchange Format, AutoCAD
    14. 14. Formats and conversion guidance http://digimap.edina.ac.uk/webhelp/os/data_information/data_formats/new_data_tran slators.htm
    15. 15. Data Download • Data Download has 5 categories of data • Click + or on Category name to open
    16. 16. 1. OS MasterMap • Most detailed mapping available of GB • 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 • Change Only updates available
    17. 17. OS MasterMap layers
    18. 18. OS MasterMap Topography data http://www.ordnanc esurvey.co.uk/osweb site/products/os- mastermap/index.ht ml
    19. 19. MasterMap ITN data http://www.ordna ncesurvey.co.uk/o swebsite/products /os- mastermap/index. html
    20. 20. Using OS MasterMap in ArcGIS • OS MasterMap supplied in GML format (within a Gzip file) • Can import this directly to ArcMap…but 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. • Conversion options?
    21. 21. OS MasterMap conversion Possibilities: 1. Convert to ESRI Geodatabase format using Productivity Suite (ArcGIS V9.2 or later) or Map Manager (ArcGIS V9.1 or earlier) 2. Convert to Shapefile format using InterpOse
    22. 22. OS MasterMap Convertor• Available through Eduserv CHEST: • ESRI Productivity Suite (ArcGIS V9.2 or later) • Map Manager (ArcGIS V9.1 or earlier)• Converts OS MasterMap data to ESRI Personal Geodatabase format• Accepts GZip files for conversion
    23. 23. InterpOse Digimap edition http://www.dottedeyes.co.uk/spatial_data_loading/interpose/digimap.php • Free download, which converts MasterMap GML data to SHP file format (and various other formats) • InterpOse accepts GZip files for conversion
    24. 24. Backdrop mapping •Largest scale at top •Raster data 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 •All compatible with ArcGIS, no conversion requirements
    25. 25. Backdrop mapping • Information boxes indicate: – Scale – Format availability – Version – Data Allowance – Terms of use • Version and format can be changed in order Basket, under options
    26. 26. 3. Land and Height data •PROFILE 1:10000, created 2009. Contours at 5m intervals with spot heights. •PANORAMA 1:50000, created 1996. Contours at 10m intervals with spot heights. •DTM – Digital terrain model – 3D representation of terrain surface.
    27. 27. Land and Height data • Contours, Panorama available in DXF, NTF formats • DTMs available in DXF, NTF, ASC, TIFF • DXF AutoCAD format, but can import to ArcGIS • NTF can be converted to ESRI Geodatabase, with Productivity Suite
    28. 28. Productivity Suite, NTF Convertor • Converts NTF data to ESRI Personal Geodatabase
    29. 29. 4. Vector Data• Formats available for products not consistent, e.g.: – VectorMapLocal – GML, SHP – Strategi – SHP, DXF, TAB, NTF, MIFMID• SHP available for all vector maps, except Meridian 2 Tiles (NTF, DXF)
    30. 30. Vector data formats Format Compatibility SHP Shape file, ArcGIS format MIF/MID MapInfo format NTF National Transfer format, non-proprietary GML Geography Markup Language DXF Drawing Exchange Format, AutoCAD
    31. 31. Shape files • Shape files do not require any conversion prior to use in ArcGIS. • Remember to keep all constituent parts together - SHP, DBF, SHX:
    32. 32. 5. Boundary and Location Data • Boundary-Line - administrative boundaries e.g. counties, unitary authorities, electoral areas • Code-Point – coordinates for postcodes, boundaries for postcodes • OS Locator – gazetteer of road names • Entire 1:50000 Scale Gazetteer, 260,000 entries • National Grid square outlines, 1km, 5km, 10km, 20km, 100km options • GB National outlines
    33. 33. OS Boundary-Line • SHP, MIFMID formats available
    34. 34. Code-Point • Code-Point data, on 1:10000 Scale Raster background •Available in CSV or NTF format. Simplest to import to ArcGIS using CSV.
    35. 35. Code-Point with Polygons• Code-Point polygons are digital post-code boundaries• Image shows Code-Point data and Code-Point Polygons, on 1:10000 Scale Rasterbackground•Available in SHP or MIF/MID format
    36. 36. 1:50000 Scale Gazetteer • Place name searches in Digimap use the OS 1: 50000 Scale Gazetteer • Same database that is used on OS Landranger Map • Download entire Gazetteer from Data Download, CSV format
    37. 37. Gazetteer Plus • Or download selected records using Gazetteer Plus – CSV, TAB or XML formats
    38. 38. Gazetteer data • Delivered in CSV file • In order to import to ArcGIS, saved as DBF IV, using Excel 2003 • N.B. DBF IV option not available in Office 2010 – try Open Office spreadsheet
    39. 39. Unzipping standard Digimap zip filesUse the standard Windows unzip facility:
    40. 40. Unzip standard Digimap zip files • Sub-folder for each map product • Citations and contents text documents at top level
    41. 41. Standard Digimap • 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.
    42. 42. 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. Use WinZip, 7Zip, GZip to extract from GZip
    43. 43. Styling vector data • 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
    44. 44. Styling options • Options for cartographic styling in Symbology tab of map layer properties 1. Generate your own style using layer attributes 2. Apply a layer file that contains styling information 3. Match to symbols in a pre-installed style
    45. 45. OS MasterMap symbology • Productivity Suite, Map Manager – symbology files available with the evaluation software: – http://www.esriuk.com/software/arcgis/productivitysuite/download#
    46. 46. Digimap help pages
    47. 47. OS MasterMap symbology • InterpOse – provide a style file for ArcGIS, which you select to install.
    48. 48. EDINA Symbology, or style, files • OS vector data: – Strategi, Land-form Panorama, Meridian, Land-Line – in OS help: – http://digimap.edina.ac.uk/webhelp/os/using_data_with_arcgis/using _ntf_data/symbology_in_arcgis_9.htm • 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.
    49. 49. OpenStream • Free with .ac.uk email address • Stream following OS map data direct to GIS: • MiniScale® • 1:250,000 Scale Colour Raster • OS Vector Map™ District (Raster) • OS Street View® • http://openstream.ed ina.ac.uk/terms
    50. 50. OpenStream
    51. 51. OpenStream API key • Add my API key to the OpenStream URL: http://openstream.edina.ac.uk/openstream/wms? token=[your_apikey] • Setup this URL in my GIS > allows me to stream OS data

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