The 180th Meridian (2016)

Re:The 180th Meridian (2016) by uj8efdkjfdshf on Thursday June 04, 2020 @12:26PM (#23418644)

Why not just internally represent longitude as being between 0 to 360 (mod 360)? This way you won't have a discontinuity in direction when going from one longitude to another.

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Re:The 180th Meridian (2016) by apendleton on Thursday June 04, 2020 @01:30PM (#23419370)

You still have a discontinuity, you've just moved it from the antemeridian (+/-180 degrees) to the prime meridian (0 degrees). The issue isn't the sign, it's the wrapping.

In a lot of ways, this is actually worse. Lots of software can ignore problems posed by antemeridian-crossing geometries because in practice, not that many people encounter them (not many people live there). This would move any problems to the middle of the UK, plus a good chunk of west Africa.

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Re:The 180th Meridian (2016) by ChuckMcM on Thursday June 04, 2020 @12:52PM (#23418957)

I was wondering the same, lat/long pairs are unique so you could map them to a homogenous sphere and then all of the algebra works as expected.

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