Addy Pope

Addy is a member of the GeoData team at EDINA and work on services such as GoGeo, ShareGeo and the FieldtripGB app. Addy has over 10 years experience as a geospatial analyst. Addy tweets as @go_geo

Mar 272013

Marine Roam is a fantastic service which provides access to SeaZone HydroSpatial data for the waters around Great Britain.  There are many applications for the data and the expanding offshore renewables sector, and associated research around it, immediately springs to mind.  However, did you know that you can use Marine Roam for some historical sleuthing?

70 years ago today, 27th march 1943,  HMS Dasher was sailing up the Firth of Clyde heading for Greenock.  HMS Dasher had been converted into an aircraft carrier and was home to 8 Swordfish and 2 Sea Hurricanes. The planes were being refuelled following landing practice when there was a series of massive explosions.  The ensuing fire could not be contained and the ship was abandoned. It sank just 6 minutes after the first explosion. While 149 seamen were recovered, 379 lost their lives.

Wrecks are marked in the HydroSpatial data and can be queried in Marine Roam.  It is a little tricky to find the wreck of HMS Dasher.  I knew it was situated in the Firth of Clyde, mid-way between Arran and the mainland, about 5 miles south of Little Cumbrae. However, the only wreck I could find was that of the Antares, a fishing trawler which sank in 1990 after its nets were apparently snagged by a submarine.  After a bit of hunting I found some strange boat shaped features, seemingly related to military wrecks which for the most part appear to have been sunk during exercises.  One of these marks the resting place of HMS Dasher. Below is a screenshot of the attribute information held in the HydroSpatial data about her.


Wreck of HMS Dasher in Marine Roam

You can log into Marine Roam and use the Info Tool to explore features on the map. Alternatively, you can download the data through Marine Download and load it into a GIS for further exploration.

So what other famous ship wrecks can you find in Marine Roam?  Why not post a comment with the coordinates of your favorite sea-floor find.

Much of the background information used in this blog post was taken from the fantastically detailed records available through the Royal Commission on the Ancient and Historical Monuments of Scotland website.

 March 27, 2013  Posted by at 6:24 pm Digimap News, Of Interest Tagged with: , , ,  Comments Off on Using Marine Roam to find interesting things beyond topography
Sep 252012

Service "At Risk".Recently  we have discovered a handful of users have found maps failing to load in Digimap’s mapping applications. All other tools are available, just the map is missing.

This appears to be caused by anti-virus software installed on the users computer blocking the maps streamed from Digimap.  Adding Digimap to the list of trusted sites should resolve this problem, although the specific format of the URL to trust is important.  If maps are failing to load for you too, please check that Digimap is listed as one of your trusted sites. If Digimap is listed and the maps still fail to load, please contact us for assistance.  We will need to know the name and version of the anti-virus software you are using.

If your computer is centrally administered by your institution you may need to contact Computing Services for assistance to amend your list of trusted sites.

 September 25, 2012  Posted by at 12:17 pm Digimap News, Help 2 Responses »
Aug 312012

Carto Start Page

If you use Mozilla’s Firefox as your browser then you may not be able to access Digimap’s Carto application.  The reason for this is that Mozilla is now (from the 30th August 2012) automatically blocking Java.  The reason that Mozilla has taken this stance is that a Java exploit has been added to the notorious Blackhole exploit toolkit.  In simple terms, running Java applications through your browser opens your machine up to hackers, and we dont want that.

We are working on Carto’s successor which we hope to launch in 2013 and this will not rely on Java.  If you need to use Carto, then it will still work in Internet Explorer and Chrome browsers. Hopefully Java will patch the breach soon and it will work again in Firefox.

For more information about this security issue please read this.

 August 31, 2012  Posted by at 12:22 pm Digimap News, Service Availability Tagged with: , ,  1 Response »
Aug 302012

You may have noticed some changes to the Digimap interface over the past month. Yes, Digimap has a brand new and shiny new home page. The old home page had been around for a number of years and was starting to look it’s age. In this post we will take a look at the new interface to help you find your way around.

New Digimap Homepage

The new design splits the home page into 3 sections:

Maps and Data Collections panel – This panel provides top-level navigation allowing users to switch between different collections and account administration without having to leave the Digimap home page.  When you select an option from this list, the information is displayed in the central panel.

Eagle-eyed users may have spotted that the left hand Maps and Data Collection panel has some room for expansion.  We hope to add more data in the future and have been pulling together a number of environmental datasets which could form an Environment Collection.  Do you have any suggestions for other collections you would like to see in Digimap?  If you do, then add them as a comment.

Central Panel – the central panel provides links and information related to the collection selected from the left panel.  The information is split into sections which can be expanded or hidden by clicking on the section headings.  If you want to make a simple map, click the “view annotate and print” section to see what is available.  Services, such as Roam and Data Download are accessed by clicking on the service names.  If you want help or further information about a collection, look under the “Help Resources” section.

Digimap Ordnance Survey Panel

News panel – On the right hand side of the home page you will find links to the Digimap blog and twitter account.  We intend to post interesting Digimap news here as well so it is well worth having a quick glance at this panel as you pass through the home page.

One really good aspect of the new home page is that it allows users to see collections their institution do not currently subscribe to.  Why is this good?  Well, if a collection looks interesting and of use in teaching and learning you may be able to show colleagues who may then be able to convince institutions to subscribe.  Think of it as a shop window!

However, it has not all been plain sailing.  The cosmetic changes are just the tip of the iceberg. Significant work has taken place on the connections, authentication and the databases.  This work was tricky and threw up some unforeseen issues. If you spot something that isn’t working or just looks wrong, please contact us (  It helps if you can tell us which web browser you are using too (and which version!). We would also like to hear what you think of the new interface; just add a comment to this post or send comments to the help desk (


 August 30, 2012  Posted by at 3:49 pm Digimap News, New Features Tagged with: , ,  Comments Off on Digimap gets a facelift
Apr 052011

This is the new Digimap blog and replaces our old Blogger site. From now on this will be one of the places that the Digimap team post news, information about updates and other useful things like tip and hints.  You can subscribe to the blog through the RSS feed:

If you find a link to our old blog, please inform the administrator of the site that you found it on, or send us the URL and we will try to contact the site owner to get the link updated.

 April 5, 2011  Posted by at 5:25 pm Digimap News Comments Off on The New Digimap Blog
Apr 052011

Mozilla have just released their latest web browser: Firefox version 4.

EDINA is aware that while the majority of functionality within Digimap will work with Firefox 4, you may find that you need to restart the Roam mapping services, and sometimes their print facilities, to get them to work properly. The problem is due to the underlying software we use to make maps not yet being compatible with Firefox 4; usually after reloading everything works smoothly.

Please bear with us while we make the necessary updates to ensure that Digimap is fully compatible with Firefox 4. If you cannot get any aspect of the service working properly then please contact the help desk:

 April 5, 2011  Posted by at 5:12 pm Service Availability Tagged with: , ,  Comments Off on Firefox 4: compatability with Roam
Apr 052011

Ordnance Survey have recently release the next version (the beta version) of their VectorMap District product. This dataset is part of the OS OpenData package.

You can read more about the changes to VectorMap District on Ordnance Survey’s blog.

EDINA will be updating the version of VectorMap District available through both Digimap’s OS Collection and Digimap OpenStream. The current (alpha) version will be withdrawn completely.

There is some processing work to be done on VectorMap District before it can be available through EDINA’s services. With this in mind, we aim to release the new version through Digimap’s Data Download facility on Tuesday 5th April and through Digimap OpenStream by Thursday 31st March.

 April 5, 2011  Posted by at 5:06 pm Data Changes & Additions Tagged with: , , , ,  Comments Off on VectorMap District – beta release
Apr 052011

OS MasterMap data is now available to download in a rasterised (image) format from Digimap’s Data Download facility. If you need an image of OS MasterMap data (for example, as a backdrop map) but don’t need the complexity of the original vector data, this new stuff is for you.

OS MasterMap – detailed but complex

OS MasterMap is the most detailed product offered by Ordnance Survey. Maps made with with OS MasterMap have been available through Digimap’s mapping facilities since 2007, but if you wanted to use OS MasterMap as background for a customised map by overlaying your own data in a GIS you needed to download and convert the raw GML data. If all you want is a detailed colour background image, this seems like a significant investment of time.

Rasterised OS MasterMap – images not data

Digimap now offers OS MasterMap as .tif images at two scales: 1:1000 and 1:2000 through the usual Data Download facility. This saves you having to download, convert and import the data using specialist GIS software.

Where do I get the OS MasterMap raster background maps?

Log in to Digimap’s OS Collection, go to Data Download and select which scale of OS MasterMap image you want from the list of products. The images are tiled in 1km square tiles, so you can select your area of interest, and the tiles covering it, in the same way as other tiled datasets.

The scales are determined according to the distance on the ground represented by each pixel. The larger scale images are based on a measurement of 0.3125m per pixel. The smaller scale images are based on a measurement of 0.625m per pixel. These equate to approximate scales of 1:1000 and 1:2000 respectively, although these are dependent on the screen resolution of your monitor. You can easily display the maps at other scales, but some loss of image quality may occur if you do.

 April 5, 2011  Posted by at 4:52 pm Data Changes & Additions, New Features Tagged with: , , , ,  1 Response »
Apr 052011

You Tube IconWe have created some “How To” video clips and put them on YouTube for everyone to view. They show how to carry out various tasks with Digimap’s online maps and downloaded data.

You can see all the videos on the EDINA Digimap YouTube channel:

If there are any particular aspects of the service for which you would like us to make a video, you can add them to the discussion on our Facebook page or email us directly at

 April 5, 2011  Posted by at 4:48 pm Digimap News, Help, New Features, Training & Events Tagged with: , , , ,  Comments Off on “How To” Videos on YouTube