Article ID: CBB598591299

Le traitement cartographique de l’information périplographique et diaplographique par Ptolémée: quelques exemples (2017)

unapi

Ptolemy’s cleverness in high level mathematical calculations and astronomy has overshadowed the sources he was actually using. Some particularities, mistakes and parallels show that he made a great use of itineraries and periploi. This paper focuses on the treatment Ptolemy made of this material and on its impact on Ptolemy’s mapping of the known world. Ptolemy had at hand a large number of data relating to maritime routes roughly measured and poorly oriented. Many mistakes find their origin in this material, that the geographer has often re-elaborated. The distribution on a same line of three or more places situated on a same route and the "opposed" places are two main consequences of the use of periplographic material. A cartographic method based on schematism and on three sets of maps drawn in orthogonal projection corresponding to three key-values of the degree of longitude (300, 400, 500 stades) is likely.

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Authors & Contributors
Prontera, Francesco
Panichi, Silvia
Geus, Klaus
Cadiou, François
Seubert, Philippe
Sideri, Eleonora
Concepts
Geography
Cartography
Roman Empire
Geographers
Cartographers
Maps; atlases
Time Periods
Ancient
Republic of Venice (697–1797)
Renaissance
Medieval
3rd century
Places
Mediterranean region
Europe
Middle and Near East
Anatolia (Turkey)
Hellenistic world
Arabian peninsula
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