2004 UC Proceedings Abstract
Comparing Historical Maps With GIS Technologies Track: Cartography and Map Production Author(s): Rosemary Mosher Sequencing different versions (states) of historical maps is important work for map historians. Variations in work practices of cartographers as well as differences in paper, ink, printing, and storage of paper maps make comparison and quantitative analysis challenging. To further our ability to compare differences in historical maps, we selected several map states and scanned them at high resolution. We applied geo-referencing techniques available in raster GIS to match the digital images and compare the maps. We found that the techniques commonly used in raster GIS created unique challenges and opportunities when applied in this context. Through the introduction of quantitative methods, this project demonstrates the potential of using GIS technologies to compare historical maps, quantify change, and discover previously unrecognized changes. This may provide map historians the opportunity for analysis not previously possible. Rosemary Mosher University of Southern Maine Department of Geography-Anthropology 300 Bailey Hall Gorham , ME 04038 US Phone: 207-780-5916 E-mail: rmosher@usm.maine.edu |
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