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Published byCatherine Young Modified over 8 years ago
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Nigel James Bodleian Library Online Maps Sources of digital mapping
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What is digital mapping? Raster mapping – scanned paper maps Digital map data – viewed with specialist software Choice depends user’s requirements
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Raster mapping No special software required Can be inserted directly into a document Limited modification possible
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Raster mapping Widely available on the WWW Both historic and modern mapping Remote sensing imagery available Free access does not mean free to use!
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Digital map data Controlled access – most data is licenced No charge to university members Can be extensively modified and adapted To suite specific needs
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Ptolemy Cosmographia 1492. Source: Map History website
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Source: The World Factbook website
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Source: David Rumsey Map Collection website
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Source: The World Factbook website Resizing raster mapping
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Source: Global Insight digital dataset Resizing digital map data
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Source: Global Insight digital dataset Resizing digital map data
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Sources of digital map data Bartholomew digital data - available in the Bodleian Map Room and on OXLIP Global Insight world dataset - available in the Bodleian Map Room only 3 world datasets Europe dataset Great Britain dataset London dataset Various other datasets – GB census boundaries and World thematic data, for example
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Sources of digital map data Ordnance Survey Digital Data from DIGIMAP Available free to registered users Range of datasets available OS Strategi dataset 1:250 000OS Land-line dataset 1:1250
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Sources of digital map data Ordnance Survey Digital Data from DIGIMAP Raster data also available Georeferenced for use in a GIS OS 1:25 000 raster dataset OS 1:10 000 raster dataset
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