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| Titel |
On the precision of Ptolemy's geographic coordinates in his Geographike Hyphegesis |
| VerfasserIn |
C. Marx |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2190-5010
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| Digitales Dokument |
URL |
| Erschienen |
In: History of Geo- and Space Sciences ; 2, no. 1 ; Nr. 2, no. 1 (2011-02-09), S.29-37 |
| Datensatznummer |
250000468
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| Publikation (Nr.) |
 copernicus.org/hgss-2-29-2011.pdf |
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| Zusammenfassung |
| In his Geographike Hyphegesis (~150 AD) Claudius Ptolemy
catalogued the positions of over 6300 ancient locations in the form of
geographic longitude and latitude. A determination of the frequencies of the
fractions of the degrees indicates that the coordinates are given with
different precision/resolution and larger regional differences. The author's
assumptions concerning the origin of the detected form of the frequency
distribution were examined with statistical hypothesis tests and partly
confirmed. Differences between the frequencies of the Ω- and
Ξ-recension were investigated in terms of possible transcription errors
in the manuscripts. A calculation method is given with which the properties
of coordinates of different resolutions can be estimated. It is applied both
globally and regionally. Such basic information about the precision of the
Ptolemaic coordinates is important for detecting systematic and gross errors
in the Ptolemaic coordinates and thereby for the identification of the
Ptolemaic locations with their today's place. |
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