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Range rings not being _range_ rings

Started by dikivan2000, February 14, 2020, 05:50:27 PM

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dikivan2000

Greetings! I might be missing something, however the verification seems so obvious I think it might be a bug. Near the equator, the range rings work perfectly; however, near the poles they start being inconsistent. From what I managed to deduce, the north and south distances are fine, but east/west lines do not depict the right distance. Find the screenshots attached.
P.S. Either that or range/bearing tooltip is lying.

tim arnot


Tim. @TimArnot


dikivan2000

Quote from: jank1 on February 15, 2020, 10:25:24 PM
This is how the Earth is displayed on a plane surface.
Take a look at this webside and you wil understand the problem.

https://thetruesize.com/#?borders=1~!MTY3NzEzOTE.ODM0MzM1MQ*MjkwMTkzNDk(MTUwOTc0NzQ~!CONTIGUOUS_US*ODM2ODc4Mg.MjQzMjk1NDg(MTc1)MA~!IN*NTI2NDA1MQ.Nzg2MzQyMQ)MQ~!CN*OTkyMTY5Nw.NzMxNDcwNQ(MjI1)Mg

I understand the concept of plotting a sphere on a flat surface - that, however, only justifies the shape of the range rings. The curve itself should still always connect the points at the same distance from the origin, which is not the case here.

tim arnot

Quote from: dikivan2000 on February 16, 2020, 06:31:45 PM
I understand the concept of plotting a sphere on a flat surface - that, however, only justifies the shape of the range rings. The curve itself should still always connect the points at the same distance from the origin, which is not the case here.

Yes it does appear that there's a bug here. It'll get fixed for the next release.

Tim. @TimArnot