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Modeling Spatio-Temporal Networks with CHGIS

Modeling Spatio-Temporal Networks with CHGIS. Lex Berman 贝明远 CHGIS, Harvard University. 2 nd Intl Workshop on Monies, Markets & Finance in East Asia Ruhr-University Bochum 4 – 6 th Oct 2007. Funded By: Henry R. Luce Foundation (2001 – 2004)

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Modeling Spatio-Temporal Networks with CHGIS

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  1. Modeling Spatio-Temporal Networks with CHGIS Lex Berman 贝明远 CHGIS, Harvard University 2nd Intl Workshop on Monies, Markets & Finance in East Asia Ruhr-University Bochum 4 – 6th Oct 2007

  2. Funded By: Henry R. Luce Foundation (2001 – 2004) National Endowment for the Humanities (2005 – present)

  3. admin unit, populated place, natural feature, religious site, archaeological site, trade route, place where an event occurred, etc placename feature type city, village, mountain, temple, ruin, trade route, etc footprint latitude and longitude for each feature valid date date or range of time for which this record is valid source note citation of data source, commentary on feature core elements of a digital gazetteer

  4. digital gazetteer GIS layers placename feature type coordinates valid date source note spatial objects CHGIS =gazetteer database+GIS layers

  5. 秦始皇 清宣统 222 BCE 1911 CE POINT Features: National Capitals Province Capitals Prefecture Capitals County Capitals Towns & Villages POLYGON Features: National & Regime Boundaries Province Boundaries Prefecture Boundaries 1911 County Boundaries scope: a base GIS of Chinese admin divisions

  6. Reference layer: 1820 Qing Dynasty

  7. Digitization process: maps scanned

  8. Digitization process: town points entered

  9. Digitization process: boundary entered

  10. Comparison of historic map with CHGIS data

  11. Example: Shandong 1911 county boundaries

  12. Example: Shandong with Town points

  13. Currently complete 1911 county boundaries

  14. Time Slice data = specific year of validity

  15. Data Model Name Change Unit Change Location Change Time Series = instances with ranges of time

  16. Time Series in GIS layers

  17. Time Series current progress

  18. CHGIS – Version 4 datasets

  19. Da Qing yitongzhi. [Qing National Gazetteer] Yajima, Genryo. Chugoku no ji’in. [Temples of China] Tōhoku Daigaku Fuzoku Toshokan , 1966. [1941] Buddhist temple gazetteer sources

  20. page from Yitongzhi Da Qing yitongzhi (Yitongzhi)

  21. Chugoku no ji’in (Yajima Index)

  22. Comparison of contents - Yitongzhi & Yajima

  23. georeferencing temple records, Yajima sites

  24. georeferencing temple records, CHGIS tables

  25. georeferencing temple records, map view

  26. overview of temple locations

  27. density of temples at each location

  28. Example: Song tax statistics

  29. Example: Mongolian Administration over time

  30. Example: distribution of ceramic kilns

  31. select area of interest convert to “shapefile” Associating data values with polygon features

  32. export attribute data for focus area to TEXT file add a new column to the TEXT file enter new values in the new column, then REJOIN to original GIS focus area shapefile join new data values to GIS attribute table

  33. create chloropleth map based on your data Thematic map based on new data values

  34. center points + outer boundary aggregation of Thiessen boundaries Thiessen Polygons based on points Thiessen polgyons generated from points

  35. population distribution – normalized by area

  36. Male Population (1820) normalized by area DEM background Thiessen polygons compared with natural features

  37. Mapping and animation of locations over time - Life of Ouyi Zhixu

  38. table of events with known dates & table of locations

  39. checking and correction of possible locations

  40. Addition of paths of movement between locations for each event

  41. Animation of points for each event, and paths of movement

  42. www.fas.harvard.edu/~chgis photo: Heilongtan, Kunming, Yunnan

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