Lyon, the spatial analysis of a city in the 17th and 18th centuries. Locating and crossing data in a GIS built from written sources - Université Jean Moulin Lyon 3 Accéder directement au contenu
Chapitre D'ouvrage Année : 2014

Lyon, the spatial analysis of a city in the 17th and 18th centuries. Locating and crossing data in a GIS built from written sources

Bernard Gauthiez

Résumé

The Lyons historical GIS was developed from the end of the 1990s. Its aim was to reach a new understranding of the transformations of urban and social spaces by spatializing data at the buildings' scale. We thought that by such a jump in precision by a factor 100, from a subdivision by 36 quarters to one by 3,500 buildings in the modern period, the mapping would lead to new perspectives and results in urban history. This involved working through two centuries of numerous and heavy archival records, taxes registers, censuses, building permits, property changes..., each record comprising generally between 3,500 and 8,000 entries, in order to create critically researched data bases followed by vector GIS layers. This required developing a method to reveal the implicit spatiality of these written sources, and to establish a mapping topography, allowed by a careful and geometrically checked reconstruction of the city's plot pattern together with its variations before 1800, with the help of numerous archival maps. It was also necessary to take into account the space transformation, studied at the actual scale of individual investments, owing to the building permits checked with the still extant constructions, and the administrative record. The changing built-up and social spaces are a constant preoccupation in our work. In short. Understanding this process of change is absolutely necessary to analyze a situation at a given date, and its significance at different time scales in itself. This paper describes the way we achieved the intended goal, working together as a geographer who was also an historian, and an historian who became geographer. It develops some results and draws the research lines on which the work is in progress, or still to be done. One very interesting aspect of the method is that, once the historical address system has been established, in identifying successive owners ofthe same building, many sources became 'spatializable', including non-serial ones, and so deliver new historical insights.
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Dates et versions

hal-01422651 , version 1 (26-12-2016)

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  • HAL Id : hal-01422651 , version 1

Citer

Bernard Gauthiez. Lyon, the spatial analysis of a city in the 17th and 18th centuries. Locating and crossing data in a GIS built from written sources. Springer International Publishing. Mapping social relations, their perceptions and dynamics, 2014, 978-3-319-00992-6. ⟨hal-01422651⟩
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