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Frančula XIII vs. Gott-Wagner

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  Frančula XIII Gott-Wagner
Creator Nedjeljko Frančula (1971) J. Richard Gott III (2010)
Group Lenticular Lenticular
Property Compromise Compromise
Other Names
Remarks A Wanger IX variant, derived by Umbeziffern from the equatorial azimuthal equidistant projection, minimized distortion by application of the Airy-Kavrayskiy criterion.
For more information, refer to my blogpost The Frančula Projections or Frančula’s original paper Die vorteilhaftesten Abbildungen in der Atlaskartographie (German).
A variation of the Wagner IX, Böhm notation: ix@60-51.9615-450-38.49 (rounded). Presented in Sizing up the Universe by Gott & Vanderbei (2010), explained in detail in Flat Maps that improve on the Winkel Tripel by Gott, Goldberg & Vanderbei (2021).
Also see my blogpost Four Flexify Projections and Gott-Wagner.
recommended comparisons Canters-Frančula
F13 Copycat
Gott-Wagner
Frančula XIII
This pairing is among the list of recommended pairings – but why?
Two optimizations of Wagner IX.

1. Comparison: Physical Map

Frančula XIII
Frančula XIII
Gott-Wagner
Gott-Wagner

2. Comparison: Political Map

Frančula XIII
Frančula XIII
Gott-Wagner
Gott-Wagner

3. Comparison: Silhouette Map

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Grey areas: Superimposition of projections
Frančula XIII Silhouette Map
Gott-Wagner Silhouette Map

4. Comparison: Tissot Indicatrix, 30°

Frančula XIII
Frančula XIII Tissot Indicatrix
Gott-Wagner
Gott-Wagner Tissot Indicatrix
 

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