Visualizations atlas

  • Map of the provinces investigated : Poitou, Aunis, Saintonge, Angoumois (PASA)
    Map of the provinces investigated : Poitou, Aunis, Saintonge, Angoumois (PASA)
  • Map of PASA region ports
    Map of PASA region ports
  • Map of customs offices in the PASA region
    Map of customs offices in the PASA region
  • The decline of the La Rochelle region following the loss of Canada
    The decline of the La Rochelle region following the loss of Canada
  • Highly specialized ports: the slave trade, the salt trade, and the brandy trade
    Highly specialized ports: the slave trade, the salt trade, and the brandy trade
  • La Rochelle, a dominating port but not a regional hub
    La Rochelle, a dominating port but not a regional hub
  • Products with the highest export value in 1789: comparison between the La Rochelle customs region and the French average
    Products with the highest export value in 1789: comparison between the La Rochelle customs region and the French average
  • Evolution of the share of La Rochelle trade in relation to France as a whole
    Evolution of the share of La Rochelle trade in relation to France as a whole
  • Home country of ships departing from the region in 1789
    Home country of ships departing from the region in 1789
  • Home ports of ships departing from the PASA region in 1789
    Home ports of ships departing from the PASA region in 1789
  • Destinations of ships sailing from the PASA region to another country in 1789
    Destinations of ships sailing from the PASA region to another country in 1789
  • Home port of ships sailing to another country in 1789
    Home port of ships sailing to another country in 1789
  • Share of French navigation in the region
    Share of French navigation in the region
  • Comparison of colonial, local, and other exports by customs office
    Comparison of colonial, local, and other exports by customs office
  • Flows of ships outfitted by the port of La Rochelle in 1787
    Flows of ships outfitted by the port of La Rochelle in 1787
  • Ports of departure of vessels transporting salt in 1789 from the PASA region, aggregated by cumulative tonnage
    Ports of departure of vessels transporting salt in 1789 from the PASA region, aggregated by cumulative tonnage
  • Destination of ships departing from Marennes in 1789, aggregated by country and by cumulative tonnage
    Destination of ships departing from Marennes in 1789, aggregated by country and by cumulative tonnage
  • Evolution of brandy exports from the La Rochelle customs region (free ports not included)
    Evolution of brandy exports from the La Rochelle customs region (free ports not included)
  • Comparison of brandy exports from different customs regions (free ports not included - no data for Montpellier in 1770)
    Comparison of brandy exports from different customs regions (free ports not included - no data for Montpellier in 1770)
  • Origin of brandy exports from the La Rochelle customs region in 1789 (free ports not included)
    Origin of brandy exports from the La Rochelle customs region in 1789 (free ports not included)
  • Maps of ships leaving Marennes with salt in 1789, sized by cumulative tonnage
    Maps of ships leaving Marennes with salt in 1789, sized by cumulative tonnage

Map of PASA region ports

How were the data and visualization produced ?

The basemap for this visual was created by aggregating multiple sources and making them compatible using geomatics methods.

Data originates from the Navigocorpus database, which among other data comprises the clearance documents issued to ships on departure. These data were re-processed in an API. The database structure is based on point calls, which indicate a location where, on a given date, a ship in motion was observed. A filter was used to select the point calls where ships were observed immediately after leaving the port.

How to read the visualization?

The dot size is proportional to the number of departures recorded in each port of the region studied. Each of the three colors shows the province to which a port belongs.

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