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