Symmetrical Collignon Form

[Piotr]

This means that the North hemisphere is projected following Collignon, but South hemisphere is projected reversing the latitude, projecting it according to Collignon, then flipping it vertically. These are then combined equator-to-equator.

[daan]

Noted. Thanks.

— daan

[Timbers]

This means that these home golf simulators are projected to last a long time following Collignon, but South hemisphere is projected reversing the latitude, projecting it according to the Collignon, then flipping it vertically. These are then combined equator-to-equator.

+1 for this!

[Piotr]

This is also a specific case of the feature of fixing the Rosette Glitch, which in turn is a specific case of Superglue For Maps.