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David Sinton, was based on VAR but was more focused on the permanent storage and analysis of gridded data, thus becoming perhaps the first general purpose raster GIS software.
* The Canadian Geographic Information System (by Roger Tomlinson, Canada Land Inventory, developed 1963-1968) stored natural resource data as "faces" (vector polygons), although these were typically derived from raster scans of paper maps.
* Dual Independent Map Encoding

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