Mapping with Khartis: visualization | Tangente

Mapping with Khartis

Most data visualizations in the press are created with this open-source software, developed since 1995 by the mapping workshop at the Institut d'études politiques de Paris ("Sciences Po").

Written by

Norbert Verdier

PublishedApril 16, 2021UpdatedSeptember 19, 20261 min read

In the second half of the 18^th century, France had eighty bookseller-printers specializing in mathematics, distributed as follows: 3 in Avignon, 1 in Chaumont, 1 in Épinal, 1 in Grenoble, 1 in Lyon, 1 in Marseille, 1 in Montpellier, 66 in Paris, 1 in Rouen, 2 in Strasbourg and 2 in Toulouse. How can we best visualize these data? With Khartis! Load the data into a spreadsheet file (CSV, for comma-separated values):

Next, download Khartis or use it online (**sciencespo.fr/cartographie/khartis**), import your own base map, then your data (our CSV file here), to produce the visualization below.

A range of options lets you choose colors, variables and maps, and insert text…

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