British Museum blog

Lost Change: mapping coins from the Portable Antiquities Scheme

coin visualisation
Daniel Pett, ICT Advisor, British Museum
544

Today sees the launch of Lost Change, an innovative and experimental application that allows coins found within England and Wales and recorded through the British Museum’s Portable Antiquities Scheme (PAS), to be visualised on an interactive, dual-mapping interface. This tool enables people to interrogate a huge dataset (over 300,000 coin records can be manipulated) and discover links between coins’ place of origin (the issuing mint or a more vague attribution if this location is uncertain) and where they were discovered and then subsequently reported to the PAS Finds Liaison Officers.

While much of the the data is made available for re-use on the PAS website under a Creative Commons licence, some details are closely guarded to prevent illicit activity (for example night-hawking or detecting without landowner permission) and so this application has been developed with these restrictions in mind. An object’s coordinates are only mapped to an Ordnance Survey four-figure National Grid Reference (which equates to a point within a 1km square), and only if the landowner or finder has not requested these to be hidden from the public.

.

The distribution of coins is biased by a number of factors (a project funded by the Leverhulme Trust is looking at this in greater depth) which could include:

  • Whether metal detecting is permitted by the landowner, or the topography makes detecting difficult
  • Soil type and land use
  • Whether there is an active community of metal detectorists within the vicinity

544x306

The tool is straightforward to use. The left hand pane holds details for the place of discovery; the right hand side holds details for the place of issue, the mint. These panes work in tandem, with data dynamically updating in each, depending on the user’s choice. A simple example to get going is this:

  • Click on “Iron Age” within the list of periods
  • Within the right hand pane, click on one of the three circular representations and this will highlight where the coins from this mint were found in the left hand pane. The larger the circular representation, the more coins from that mint have been recorded.
  • If one clicks on any of the dots within the left hand pane, these are selected and an overlay in the right hand pane allows dynamic searching of the PAS database.

The PAS intends to build on this project at a later stage and will be seeking further funding to enable this to happen, with many more facets of discovery available to query the dataset.

Lost Change was funded through a £5,000 grant from the CreativeWorks London ‘Entrepreneur-in-Residence’ programme.

The PAS is grateful to Gavin Baily and Sarah Bagshaw from Tracemedia who developed the application, and everyone who has contributed to the PAS database.

If you have any feedback on the project, please contact the PAS via info@finds.org.uk.

If you would like to leave a comment click on the title

Filed under: Portable Antiquities and Treasure, , , ,

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 12,329 other followers

Categories

Follow @britishmuseum on Twitter

British Museum on Instagram

This week we're celebrating #MuseumWeek with a new theme each day!
Today’s theme is #favMW. What is your favourite British Museum object?
#museum #objects #history 'The absolutely-must-see exhibition of the year' ★★★★★ (The Times)
#DefiningBeauty is now open! We will be creating a major new gallery of the Islamic world, opening in 2018!
The new gallery will showcase the Museum’s world-class collection, from early Islamic art to contemporary works.
Director Neil MacGregor: ‘A generous gift from the @albukhary.foundation makes it possible to completely redisplay this important Islamic collection.’
#IslamicArt #art #gallery #museum For today’s #MuseumWeek theme of #architectureMW, we’re sharing stories of our building’s history. 
The Great Court opened in 2000 – the largest covered square in Europe. The Great Court roof has 3,312 glass panels. Each one is unique as the space is asymmetrical
#history #architecture #museum #London #DidYouKnow the Museum had its own tube stop between 1900 and 1933? Here it is in 1903 @ltmuseum 
#architectureMW #MuseumWeek #underground #tube #London #history This week we’re celebrating ‪#MuseumWeek with a new theme each day! Follow us on Twitter @britishmuseum to find out more. 
Today's #MuseumWeek theme is #architectureMW. We'll be sharing stories of our building's history. 
The first home of the British Museum was Montagu House, built in 1686. In this old museum at Montague House there were stuffed giraffes on the staircase! 
#history #museum #giraffe
Follow

Get every new post delivered to your Inbox.

Join 12,329 other followers

%d bloggers like this: