digitizing dutch censuses 1795-1956 preliminary results & work in progress luuk schreven...
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Digitizing Dutch Censuses1795-1956
Preliminary results & work in progress
Luuk [email protected]
Netherlands Institute for Scientific Information Services
Structure of presentation
1. Introduction to census project– Efforts to harmonize census data– Remote access to census micro
data
2. Tour of the new website
3. Historical GIS for the Netherlands
Introduction to census project
• 1997 - 1999:– Scanning 200 books, 42.500 pages– Data-entry census 1899
• 2002 - March 2004:– Validation and correction of census data
1795-1859 and 1930– Digital archiving census 1960 and 1971
• March 2003 – December 2005:– Life Courses in Context (see: http://
www.lifecoursesincontext.nl)– Data-entry of census data 1869-1956– Documentation, harmonization, access and
research
What has been realized?
• New website up and running – Only in Dutch! – Some 40.000 pages of tabular (aggregate)
census data downloadable from website– Documentation is available– Validation and correction are partially
complete– Harmonization schemes for certain census
variables
• (restricted) Access to original micro data files for 1960 and 1971 census– Van Tubergen & Maas (2005)
Still to do…
• Finishing validation and correction• Building harmonization schemes for census
variables:– HISCO for harmonization of occupations– Standardizing sub municipal divisions – Harmonizing other variables and categories
• Linking to Life Courses data from the Historical Sample of the Netherlands
• Better access to the data– Data not only as Excel spreadsheets– StatLine or Nesstar? Or other publication tool?
• Translation of the website to English!
Volksmenigte in de Bataafsche Republiek, 1795
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
Provincie
Zie
len
0
200
400
600
800
1000
1200
1400
1600
1800
Gro
nd
verg
ader
ing
en
Zielen
Grond-vergaderingen
Population per municipality in 1795
Source: http://www.nidi.nl/
In 1795 Amsterdam is the biggest city with 217.024 “souls” Klein-Waspik is the smallest hamlet with 3 inhabitants; a total of 1807 municipalities are mentioned in the census.
Boonstra’s NLKaart
• Dr. Boonstra’s NLKaart;
– mid 1980’s onwards
– first Historical GIS?
– municipal boundaries
between 1830 - 1990
– first SAS/Graph based,
later MapInfo
HGIN; a Historical Geographic Information
System for the Netherlands
• Project goals:– Converting and correcting Boonstra’s
NLKaart– digitizing maps with sub municipal
boundaries ‘wijken’ (neighbourhoods) and ‘buurten’ (blocks) (1920 – 1971)
– Setting up a gazetteer of historic places– Making the everything available on the web
HGIN details: technical stuff
• Scalable Vector Graphics
• Geoserver as basic geographical data server (OpenGIS)
• User friendly interface in NIWI’s Content Management Software: i-Torsee: http://www.itor.org or http://www.nidi.nl for working preview of the GIS.
HGIN details: results so far
• Testversion of mapping application is running at NIDI’s website (www.nidi.nl)
• 1960 and 1971 sub municipal maps available
• 1930, 1947 and 1956 maps are being digitized (outsourced)
• NLKaart converted to ArcGIS
• Work on gazetteer started