east anglia fenlands
DESCRIPTION
TRANSCRIPT
East Anglia Fenlandsmashup since Domesday
Andrew Zolnai
Cambridge UK
blog.zolnai.ca
Basic Information
• HC Darby– 1969, The Draining of the Fens (35 maps figures)
– 1974, The Medieval Fenland (25 maps figures)
• PJ Smith– 1994, Grahame Clark, the Fenland Research
Committee and prehistory at Cambridge
• J Bowring– In prep. (population maps of the Fenland from
1563 and 1674)
Lay Subsidy Maps
Constants
• Scanned figures
– Parish boundaries
• O|S OpenData
– Cities
– Coastlines
– County boundaries
– Parish boundaries
Derivations
Lay Subsidy year 1327 1332 1641
assess. "20th" "15th"
criteria 1/20 1/15 /1000 acre /500 acre
Darby 15 20 30 15
classif. 30 40 60 30
values 45 60 90 45
original 15 20
derived 23 30
used 38 50
ClassificationLay Subsidy
Domesday SurfGeol R G B Bowring
0 0 155 155 155 = 0
1 1 0 0 255 0 - 10
3 2 155 0 255 10 - 25
4 3 255 0 255 25 - 50
6 4 255 0 0 > 50
Current
• OpenData
• BGS WMS
– Onshore
– Offshore
Tracking economic wealth
Overlaying surficial geology
Vector maps online
Questions?
• Thank you
– archaeogeek.com and giscloud.com
– Cambridge University, Cont. Ed. / Archaeology
– Ordnance Survey, OpenData / OpenSpace
– British Geological Survey, Web Mapping Service
• More info
– Web map: http://bit.ly/cQw2nU
– Project blog: http://bit.ly/9wgr6R
– Public data: http://bit.ly/8YTk4K