Geography Reference
In-Depth Information
case the test results impossible, due to the lack of still existing reference points in the deltaic
area. Therefore, only a comparison between coeval maps is allowed. In Figure 15 the
comparison between the “false case” and the georeferenced P map (by means of a second
order polynomial transformation) is showed. In this case, the increase in correspondence for
the northern cluster of islands details between the two maps is very high (see Figure 15b).
For the purpose, a vectorization of P map was used in order to better visualize the overlay.
Unfortunately, L map covers a smaller land area, and other coeval maps depicting the same
deltaic area do not appear to exist: thus, the comparison with P map only is possible and
significant.
Figure 13. A true “false case”: the first attempt at restoring the possible original appearance of the
former real map configuration before the alleged author intervention (in yellow the part translated and
rotated from the white original location). North is right.
5.2. Towards possible future developments
The quite simple analysis above proposed could be considered as a stimulus toward a new
way of approaching the study of pre-geodetic cartography: an approach capable to deeply
enter the factual map genesis processes. In fact, a mere mathematical approach could not be
satisfying for situations similar to the above discussed. As shown in Figures 16 and 17, the
attempt of mutual comparison among the georeferenced coastline locations for the three
studied maps could remain widely questionable. In these case, in fact, a gross discrepancy in
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