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Tag Archives: Rocque
Rocque map gets new identities.
The last post described how an existing place name index created for the Rocque 1746 map had been georeferenced, and how the streets and notable places shown on the map had been digitised from the 1st/2nd edition OS maps of … Continue reading
Posted in LocLonGeneral
Tagged Georeference, GIS, Historic map, Rocque, Survey method
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Populating Rocque – What was where?
The last three posts looked at how the 24 individual sheets of John Rocque’s map of 1746 showing central London and its immediate environs, were stitched together to create a single image, how that image was then referenced to the … Continue reading
Posted in LocLonGeneral
Tagged Georeference, GIS, Historic map, Rocque, Survey method
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Fitting Rocque to modern London – Investigating the warp factor
The last post looked at how the single composite scan made from the 24 separate sheets of John Rocque’s 1746 map of central London, were fitted in place over moden mapping using the process named georeferencing. When applied to historic … Continue reading
Posted in LocLonGeneral
Tagged Georeference, GIS, Historic map, Rocque, Survey method
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Fitting Rocque to modern London – Georeferencing
The last post explained how scans of the 24 individual sheets of John Rocque’s 1746 map of centralLondonhad been fitted together so they comprised a single image. In this post the process by which that image was taken and fitted … Continue reading
Posted in LocLonGeneral
Tagged Georefernce, GIS, Historic map, Rocque, Survey, trigonometry
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