The logical source for information in describing digital map files is to extract it from metadata which should be maintained for it. For example, the UK Gemini metadata standard includes fields such as title, source, etc.
With digital data, resolution is more significant than scale, although this may not always be easy to determine. If the source mapping is known, it would be possible to make a simple statement such as 'derived from 1:50,000 mapping'.
David
**********************************
David Forrest PhD, FBCart.S
Senior Lecturer
Dept of Geographical & Earth Sciences
University of Glasgow
Glasgow G12 8QQ
Tel: 0141 330 5401
----- Original Message -----
From: A forum for issues related to map & spatial data librarianship on behalf of "Oliver, Richard"
Sent: Sat, 18/10/2008 11:29
To: [log in to unmask]
Subject: Re: Referencing digital maps
A preliminary thought: does scale enter into it? I should have thought an entry would be along the following lines:
Ordnance Survey / (c) 2008, MasterMap data [Southampton: Ordnance Survey]
Although the LandLine and MasterMap data is maintained to a standard appropriate to 1:1250/2500/10,000 according to terrain, there are going to be instances where an extract or printout straddles two standards of accuracy. (The same happens in practice on a 'compiled' semi-analogue map such as the 1:25,000 Explorer, but the fact isn't paraded!) If it is in digital form, there seems no point in quoting scale: just the data. If it's hard-copy printout, then scale should be quoted.
Richard Oliver
________________________________________
From: A forum for issues related to map & spatial data librarianship [[log in to unmask]] On Behalf Of Sarah George [[log in to unmask]]
Sent: Saturday, October 18, 2008 9:42 AM
To: [log in to unmask]
Subject: Referencing digital maps
Dear all
I've been asked to produce a standard for referencing digital maps in a
bibliography. Our current standard for paper maps is as follows:
Originator/s (Year) Title, Scale. Place of publication: Publisher.
The obvious problem with applying this is that digital maps will have no
particular title.
Edina digimap's help suggests the following acknowledgement:
? Crown Copyright/database right 20(yy). An Ordnance Survey/EDINA supplied
service
but this wouldn't serve one purpose of a reference ie allowing the reader to
trace the source.
I would be grateful for any suggestions as to how to proceed.
Thanking you in advance
Sarah George
--
Sarah George BA MSc MSc MCLIP
Subject Librarian (Archaeology, Geography and Environmental Science)
Room 1.8
JB Priestley Library,
University of Bradford,
BRADFORD
BD7 1DP
tel: 01274 233415
fax: 01274 233398
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My working days are Mondays, Wednesdays and Fridays
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