Digimap – Data Download
19 November 2014
Guy McGarva, EDINA Geo User Support
Vivienne Mayo, EDINA User Support
Content
• Data Download
• Categories of data
• How to use
• Issues for users:
• Unzipping
• Formats
• Tile sizes
• Copyright and Resources
Digimap OS Collection
• Roam – view,
annotate, print
OS maps at a
range of fixed
scales
• Data Download
– download OS
mapping data
for use in
GIS/CAD
Roam
Save & open
maps, Print, Map
Content, Map
Info.
Search, scale bar,
overlays, annotate,
measure, change
basemap
Data Download
• All available OS
map data in Data
Download
• Download several
map products in
one order
• 5 categories of
map data
• 3 steps to order
map data
Data Download
Click + or on category name to open
and see available map data products:
• OS MasterMap – most detailed
topographic mapping of GB,
transport network map data
• Background Mapping – raster
maps at range of scales, all in TIFF
format
• Land and Height data – contours
and Digital Terrain Models
• Vector data – range of scales and
formats
• Boundary and Location data –
administrative boundaries,
postcode data, gazetteers
Available datasets and dates
• http://digimap.edina.ac.u
k/webhelp/os/data_infor
mation/os_data_issues/o
s_update_dates.htm#
1. OS MasterMap
•
Vector map product, most detailed mapping available of GB.
•
Topography layer – GML, DWG and File Geodatabase
formats.
•
Building Heights data added in 2014. CSV or KML format.
•
Integrated Transport Network layer – GML format only.
•
Change Only updates available.
2. Backdrop mapping
•9 products available.
•Raster maps – useful as backdrop.
•TIFF image format.
•Largest scale at top, 1:1000.
•MiniScale smallest scale – 1:1000000.
•Click Info for information box.
2. Backdrop mapping
• Information box displays:
– Scale, version, format availability, data allowance, tile size and Terms of use.
– Click Show Grid to display the tiles on map.
3. Land and Height data
• OS Terrain 50 most up to date.
• OS Terrain 5 coming soon, part of new
licence agreement. Will replace PROFILE.
• DTM? Digital Terrain Model, useful for 3D
modelling of terrain.
• Formats vary between products.
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
• Boundary-Line - administrative
boundaries e.g. counties, unitary
authorities, electoral areas. Shape
format.
• Code-Point – coordinates for
postcodes, boundaries for postcodes.
CSV, NTF (Code-Point). Shape, MIFMID (Code-Point Polygons).
• OS Locator – gazetteer of road names.
CSV.
• 1:50000 Scale Gazetteer, place name
database, 260,000 entries. CSV.
• Outlines - National Grid square
outlines, GB National outlines –
Shape, MIFMID, DXF.
Using Data Download
3 step process:
1. Select area
2. Choose maps
3. Add to basket
– Options to change
format, version and
layers
Basket options
• Select version, format and layers in the basket.
• Options vary between map data products.
Some issues for Digimap users
• Unzipping – all data is provided in a zip archive file. Sometimes
data is zipped within the zip archive!
• Formats – getting the right format
• Tile sizes - map data products are provided in different tile sizes
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!
Data formats
Format
Compatibility
DXF, DWG
Drawing Exchange, or Drawing, format, AutoCAD
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
TIFF
TIFF image format, used for background mapping products.
Formats and conversion guidance
http://digimap.edina.ac.uk/webhelp/os/data_information/data_formats/new_data_translators.htm
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
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 5 x 5km
1:10000
Vector Map
District 1:50000
100 x 100 km
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
Publication
• You can publish Licensed Data and materials which contain
Licensed Data
• Subject to some restrictions which are detailed in the Licence
• Includes various publications
• Copyright acknowledgement required:
© Crown Copyright and Database Right [insert date]. Ordnance
Survey (Digimap Licence)
– Copyright acknowledgement is included on all maps printed from Digimap
Collections.
– Remember to include copyright acknowledgement if you download data
from Digimap and create maps!
Sharing Licensed Data
• You may only share Licensed Data with:
– other Authorised Users
– Public Sector Mapping Agreement (PSMA) members
– One Scotland Mapping Agreement (OSMA) members
– Sponsors who have their own licence for the same data (type and
coverage)
• Sponsored research:
– Results must be published widely and immediately
– Hard copy plots can be supplied to sponsors
– DATA cannot be supplied to sponsors
– Excludes Research Council funded research centres with their own
Ordnance Survey licence e.g.:
 Institute of Hydrology
 British Geological Survey
Support with copyright
• Lists of Frequently Asked Questions:
http://digimap.edina.ac.uk/webhelp/digimapsupport/access/licence_ag
reements.htm
• Your site representative:
http://digimap.edina.ac.uk/webhelp/digimapsupport/service_info/site_r
ep_list.htm
• EDINA Help Desk:
edina@ed.ac.uk
0131 650 3302
Resources
• Digimap Resource
centre – access
help pages,
guides, FAQs,
videos, case
studies and more.