Georeferencing project page

Subset 1: Maps dating before 1800

The first subset is comprised by maps dating before 1800 and includes 634 maps. Although the VU map collection is focused on other periods – public maps from the 19th century and geology maps, both will be dealt with in subsets to follow – it holds a number of interesting old and rare maps. Among these are some fine examples of the typical Dutch maps of the Waterstate Councils (Hoogheemraden), an atlas by Frederik de Wit and an original copy of the famous Atlas Maior by Johannes Blaeu.

A considerable number of maps in this subset (216) originate from the so called ‘atlas factice’, one of the finest atlases in the VU-collection. The ‘atlas factice’ was commissioned by a wealthy person, who had his map collection bound into a unique atlas. Unfortunately, the origine of this atlas factice is unknown. All maps without exception were created by famous cartographers, such as Abraham Ortelius, Johannes Blaeu, Johannes Janssonius, Nicolaes Visscher and Frederik de Wit.

Georeferencing these pre 1800 maps constitutes a challenge for two reasons. Firstly, obviously, the accuracy of the maps doesn’t always meet today’s standards, resulting in map elements possibly being incorrectly placed, which then requires larger transformations and created the need for a larger number of control points. Secondly, the topography may have changed considerably since the map was made, making it difficult to find corresponding points. But why not start with a challenge? ‘Fix a location of a map’

Progress Subset 1 (the bar is showing the percentage of maps georeferenced (edited) and those reviewed by the redaction (reviewed).

Top Georeferencers Subset 1

Location (centroid) of georeferenced maps of Subset 1