Motivation for choice of standard-parallel of the Trystan Edwards Projection?

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The article doesn't say anything about the motivation for the choice of the Trystan-Edwards map's standard-parallel or aspect-ratio. Shouldn't it?

For the Trystan Edwards Projection, both the standard parallel & the aspect-ratio are accidental-looking decimal-fractions.

Was the standard-parallel chosen as the latitude of a place that Edwards liked?

Or was the aspect-ratio chosen to match the shape of the page of a book in which Edwards intended the map to be printed on a page? ...or to match the shape of a map-mounting location on which the map was intended to fit?

Or was it an aesthetic choice, with the map perceived to give the most attractive shapes? — Preceding unsigned comment added by 96.39.179.76 (talk) 08:38, 19 December 2021 (UTC)Reply