Of paths and places: the origin of Ptolemy’s Geography

  title={Of paths and places: the origin of Ptolemy’s Geography},
  author={Gerd Grasshoff and Florian Mittenhuber and Elisabeth Rinner},
  journal={Archive for History of Exact Sciences},
In his Geography, Ptolemy recorded the geographical coordinates of more than 6,300 toponyms of the known oikoumenē. This study presents the type of geographical information that was used by Ptolemy as well as the methods he applied to derive his geographical coordinates. A new methodological approach was developed in order to analyse the characteristic deviations (displacement vectors) of Ptolemy’s data from their reconstructed reference locations. The clusters of displacement vectors establish… 
5 Citations

The structure of space in Ptolemy’s Geography: methodological challenges in georeferencing ancient toponyms

  • D. Shcheglov
  • Physics
    ΣΧΟΛΗ. Ancient Philosophy and the Classical Tradition
  • 2019
In this paper I would like to draw attention to several features inherent to Ptolemy’s Geography that limit the effectiveness of different mathematical approaches to georeferencing (i.e. locating

The configuration of the Pontus Euxinus in Ptolemy’s Geography

This article aims to explain how Ptolemy could have constructed a map of the Pontus Euxinus (Black Sea), as described in his Geography, under the assumption that his sources were similar to those

The length of coastlines in Ptolemy's Geography and in ancient periploi

Abstract. The lengths of the coastlines in Ptolemy's Geography are compared with the corresponding values transmitted by other ancient sources, presumably based on some lost periploi (literally

Enhanced Mathematical Method for Visualizing Ptolemy’s Arabia

In this article, we provide updates and enhancements to the mathematical methods for translating ancient coordinates from Ptolemy’s classical Geography into coordinates that can be used in modern GIS

Ptolemy's Methodological Principles in the Creation of His Map Projections

  • Gyula Pápay
  • Physics
    KN - Journal of Cartography and Geographic Information
  • 2022
Ptolemy developed instructions for three projections, but only the first two projections were used in practice. These instructions, which contributed significantly to the development of theoretical



Travel and Geography in the Roman Empire

The remains of Roman roads are a powerful reminder of the travel and communications system that was needed to rule a vast and diverse empire. Yet few people have questioned just how the Romans - both

Barrington Atlas of the Greek and Roman World

In time, space or purpose, the prospect of any close link between the Barrington Atlas of the Greek and Roman World [1] and the Historical Atlas of Canada [2] might seem remote indeed. As editor of

The Geography of Strabo

In his seventeen-book Geography, Strabo (c. 64 BCE c. 25 CE) discusses geographical method, stresses the value of geography, and draws attention to the physical, political, and historical details of

Vitruvius: 'Ten Books on Architecture'

Part I. Translator's Preface: List of manuscripts and printed editions Illustrator's preface Part II: The Translation: Book 1 Book 2 Book 3 Book 4 Book 5 Book 6 Book 7 Book 8 Book 9 Book 10 Part III.