What OS data is available in Digimap? How do I unzip and convert the data for ArcGIS? What is...

• 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

Using data from Digimap in ArcGIS

Data in Digimap – what’s available?

MasterMap vector data, GML format

Administrative boundaries and postcode data

Range of OS map data:

•Backdrop maps

•Land & height data

•Vector data

•Place name and road name databases

Data in Digimap – 2 types

Data Download - raster data

Data Download – Land and height data

Data Download - Vector data

Data Download - Location data

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.

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

Boundary Download products

•Code-Point – postcode listings or postcode polygons

•Boundary lines – e.g. counties, unitary authorities, electoral areas

•National GB boundaries

Code-Point

• Code-point data, on 1:10000 Scale Raster background

Code-Point Polygons

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

Boundary lines sample

•Raster map of Edinburgh

•Scotland constituency boundary lines overlaid

• 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


How do I use this data in ArcGIS?

1. Download data from Digimap (zip file)

2. Process the data

3. Import data to

ArcGIS

4. Analyse data / Create

map

a. Unzip data file

b. Convert the

data to a

format

compatible

with your

software - if

necessary

Unzipping standard Digimap zip files

Use the standard Windows unzip facility:

Unzip standard Digimap zip files

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

Data in Digimap - what formats?

GML

SHP, NTF, CSV,

MIF/MID

TIFF, SHP, NTF, GML, MIF/MID, DXF, CSV,

ASC

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

What formats are compatible with ArcGIS?

• Raster data products are available in TIFF format• 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.


• Shape files do not require any conversion prior to use in ArcGIS.

• Remember to keep all constituent parts together - SHP, DBF, SHX:

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

NTF data

• Convert to ESRI Personal Geodatabase format (.MDB suffix), using Productivity Suite or Map Manager (ESRI tools).

Original file from Digimap

Converted file for use in ArcGIS

Productivity Suite, NTF Convertor

• Available through Eduserv CHEST:– ESRI Productivity Suite (ArcGIS V9.2 or later) – Map Manager (ArcGIS V9.1 or earlier)

GML data

2 data products are in GML format:

1. OS MasterMap data

2. 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.

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

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

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

OS VectorMap Local conversion

• Free download:

http://www.rolta-europe.com/osvector.html• Converts OS VectorMap Local to Shape file format• Accepts GZip files

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

• What data is available in Digimap?• How can I use this in ArcGIS?• What is ArcGIS?• Styling options• Digimap OpenStream• Other resources


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

ArcMap

Map display panel

Table of contents – view data layers

Toolbar – open ArcCatalog and ArcToolbox here

Appearance of 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

MasterMap data viewed in ArcMap

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 – style files supplied

EDINA supply style files for several data products – find these in the Help pages.

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.

Digimap OpenStream

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®

• 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

YouTube videos

Digimap OS Collection Help

YouTube

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/

osmastermap/information/technical/software.html

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