china historical gis system demonstrationchgis/work/docs/papers/lex_10aug01.pdf · china historical...
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China Historical GIS System Demonstration
Lamont Forum, Harvard, Aug 2001
Merrick Lex Berman
GIS Layers
Sample CHGIS data
Tan Qixiang’s “Historical Atlas of China”
CHGIS base dataset layers
New administrative unit datasets
Map sources
Settlements as points
Boundary polygons
Using CHGIS spatial data with other GIS data
CHGIS layers
hydro layers
DEM layers
OVERLAY
CHGIS data with hydro & DEM overlays
Toponym Search
Coding to distinguish unique places
Online Toponym Search Engine Model
Search Engine Form
Results Contain Links to Launch New Searches
Embedded Search Requests
Embedding New Queries in URLs
How to Embed CGI Calls in URLs
Request Launches Automatic Search
Mapserver Zooms to Requested Extent
Query Feature - Shows Attributes
Mapservers
Hartwell GIS - Geospatial Library
Hartwell GIS - Zoomed in with Info Request
Zoomed in Showing Prefectures
Zoomed in Showing Counties
Southern Song overlay on Tang - Counties
CHGIS 1820 Placename Searches
CHGIS for Historical Data Display
Approximate Boundaries - Thiessen Polygons
Approximate Boundaries - Thiessen Polygons
China Historical GIS Project
website: fas.harvard.edu/~chgis
email: chgis@fas.harvard.edu
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