Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Considerations
1. Download
data from Digimap (zip file)
I.
II.
•e.g. ArcGIS,
MapInfo,
CAD,
OpenSource
software
•Your data
will NOT look
as it does in
Digimap
2. Process
the data
3. Import data
to
software
4. Analyse data /
Create
map
Unzip the
data file
Convert the
data to a
format
compatible
with your
software - if
necessary
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Unzipping standard Digimap data.zip files
Use the standard Windows unzip facility:
1. Data.zip
2. Unzip data.zip:
Contents.txt,
Conditions.txt,
Data files
Unzipping Digimap GML data files
1. Data.zip
2. Unzip data.zip with a standard
Windows unzip utility:
• Contents.txt
• Conditions.txt
• GZip file
3. Unzip GZip
file with a
suitable tool:
GML data file
GZip files
• Windows standard unzip will not work with GZip
files – try:
– Gzip, 7Zip, WinZip
• NOTE: May not be necessary to unzip the GZip
file, depending on conversion requirements.
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Data in Digimap – 2 types
Data in Digimap - what formats?
TIFF,
SHP, NTF,
GML,
MIF/MID,
DXF, CSV,
ASC
Data in Digimap - what formats?
GML
TIFF,
SHP, NTF,
GML,
MIF/MID,
DXF, CSV,
ASC
Digimap’s Ordnance Survey Collection
data download facilities
Data in Digimap - what formats?
TIFF,
SHP, NTF,
GML,
MIF/MID,
DXF, CSV,
ASC
SHP, NTF,
CSV,
MIF/MID
GML
Data in Digimap - what formats?
GML
TIFF,
SHP, NTF,
GML,
MIF/MID,
DXF, CSV,
ASC
SHP, NTF,
CSV,
MIF/MID
CSV, XML,
TAB
CSV, XML,
TAB
Data in Digimap – what formats?
• Not every product is available in every format:
– for example, raster data products are only available in
TIFF format
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:
Data in Digimap - what formats?
Historic Download
TIFF
Data in Digimap - what formats?
Geology Digimap Download
SHP,
MIF/MID
Data in Digimap – what formats?
Marine Digimap download facilities
SHP, TAB,
ASCII
TIFF
What are all these different formats?
NTF (National Transfer Format)
NTF is a format designed specifically for the transfer of spatial
information. NTF originally stood for National Transfer Format, and was a
de facto standard created in 1985 by a working group within the
geographic industry. In 1992, it was revised to Version 2.0 and adopted as
a de jure standard. It is now officially called BS 7567 "Electronic transfer of
geographic information (NTF)".
GML (Geography Mark-up Language)
GML is an international standard for storing and transporting
geographical information developed by the OpenGIS Consortium (OGC).
This is an open standard, based on XML, compatible with a host of webbased technologies and encourages interoperability.
TIFF
A common public domain image file format that is supported by many
graphic applications. TIF files can also represent raster and image
datasets that can be imported into ArcGIS, MapInfo and several other
geographical information systems.
What are all these different formats?
DXF
AutoCAD DXF (Drawing Interchange Format, or Drawing Exchange
Format) is a CAD data file format developed by Autodesk for enabling data
interoperability between AutoCAD and other programs.
SHP (ArcView Shapefile)
A geographic data format created by ESRI (ArcGIS is an ESRI product),
which consists of three different files: SHP, SHX, DBF.
MIF/MID (MapInfo export format)
The MapInfo® MIF/MID format is an ASCII format, using two files. The
MapInfo® MIF file contains the layer structure, map projection and the
graphics. The corresponding MapInfo® MID file contains the attribute
values in a comma separated format.
TAB (MapInfo TAB format)
The MapInfo TAB format is a popular geospatial vector data format for
geographic information systems software. It is developed and regulated by
MapInfo as a proprietary format.
What are all these different formats?
• For more details on formats, see the EDINA
guide ‘OS Collection data formats and
conversion guidance’:
– http://edina.ac.uk/digimap/support/training/
TIFF format
• Digimap raster data are supplied as TIFF files - most GIS
or CAD software will accept TIFF image files, with no
need for conversion.
• TFW files also supplied – 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.
Shape files (SHP)
• Shape files do not require any conversion prior to
use in ArcGIS.
• Remember to keep all constituent parts together
- SHP, DBF, SHX:
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Converting data from Digimap for use in ArcGIS
• Some data formats are incompatible with ArcGIS
software:
– NTF: OS Land-Form Profile, OS Meridian 2, OS
Strategi, OS Land-Form Panorama, OS Code-Point,
OS Boundary Line
– GML: OS MasterMap, OS VectorMap Local
– DXF: OS Land-Form Profile, OS Meridian 2, OS
Strategi, Os Land-Form Panorama, GB National
Boundaries, GB National Grids
NTF data
• 1 recommendation - 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
Productivity Suite, NTF Convertor
• Available through Eduserv CHEST:
– ESRI Productivity Suite (ArcGIS V9.2 or later)
– Map Manager (ArcGIS V9.1 or earlier)
NTF Convertor
GML data
2 data products are in GML format:
1. OS MasterMap data - 2 recommendations
(Productivity Suite/Map Manager and
InterpOse)
2. OS VectorMap Local data – 1 recommendation
(Rolta)
OS MasterMap
Conversion tools:
1. Productivity Suite
(ArcGIS V9.2 or
later) or Map
Manager (ArcGIS
V9.1 or earlier)
2. InterpOse
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)
OS MasterMap Convertor
•Converts OS MasterMap data to ESRI Personal Geodatabase format
•Accepts GZip files for conversion
OS MasterMap Convertor output
• Conversion process creates an ESRI Personal
Geodatabase, with suffix .MDB
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
• InterpOse accepts GZip files for conversion
InterpOse Digimap Edition
• InterpOse accepts
GZip files for
conversion – point the
convertor to the
contents order.txt file
received with your
MasterMap download
file
• Converts to various
formats
InterpOse output
OS VectorMap Local
• Free download:
http://www.rolta-europe.com/osvector.html
• Converts OS VectorMap Local to Shape file format
Rolta Convertor
• Accepts GZip files – can add a folder of GZip files
Rolta convertor output
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Appearance of vector data
MasterMap data
viewed in ArcGIS
• Vector data (e.g. OS MasterMap, OS VectorMap Local)
will not have the same appearance as it does in Digimap,
when initially added to ArcGIS
Appearance of vector data
•Possible to
apply style (or
symbology)
files to the
data, to
replicate the
Digimap style
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 – no style files
supplied. However, EDINA supply style files for
several data products.
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.
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS
MasterMap data
• OpenStream
• Resources
• Q&A
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Digimap OpenStream
Digimap OpenStream
• New service, launched October 2010
• Anyone with a .ac.uk email address can register and 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®
• http://openstream.edina.ac.uk/terms
Digimap OpenStream
Digimap OpenStream API key
• Add my API key to the OpenStream URL:
http://openstream.edina.ac.uk/openstream/wms?
token=[your_aipkey]
• Setup this URL in my GIS > allows me to stream OS data
Using data from Digimap in ArcGIS
• Considerations:
–
–
–
–
Unzip data
Data in Digimap – what data formats?
Data conversion
Applying a style to the data
• Desktop sharing – Working with OS MasterMap
data
• OpenStream
• Resources
• Q&A
Digimap Help pages
Digimap Training Materials
EDINA Training guides:
http://edina.ac.uk/digimap/support/training/
Ordnance Survey website
• General product information:
http://www.ordnancesurvey.co.uk/oswebsite/products/
• Guidance on software for use with OS
MasterMap:
http://www.ordnancesurvey.co.uk/oswebsite/products/os
mastermap/information/technical/software.html