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Digitizing Dutch Censuses 1795-1956. Preliminary results & work in progress Luuk Schreven luuk.schreven@niwi.knaw.nl Netherlands Institute for Scientific Information Services. Structure of presentation. Introduction to census project Efforts to harmonize census data
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Digitizing Dutch Censuses1795-1956 Preliminary results & work in progress Luuk Schreven luuk.schreven@niwi.knaw.nl Netherlands Institute for Scientific Information Services
Structure of presentation • Introduction to census project • Efforts to harmonize census data • Remote access to census micro data • Tour of the new website • 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!
Population per municipality in 1795 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. Source: http://www.nidi.nl/
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-Tor see: 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
HGIN details: religion 1971 (provincial) Percentage Roman Catholic by province, Census 1971
HGIN details: religion 1971 (municipal) Percentage Roman Catholic by municipality, Census 1971
HGIN details: religion 1971 (submunicipal) Percentage Roman Catholic by block / neighbourhood, Census 1971