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[mkgmap-dev] [PATCH v1] Better rounding in mkgmap

From Valentijn Sessink valentyn at blub.net on Wed Aug 12 12:36:51 BST 2009

Hi Elrond, hello list,

... I did *not* yet test the patch, but, while biking around with a
Garmin this morning, I realised that getting the rounding correct is an
improvement, because your position is more precise. This could help in
cases where a subtle rounding error will just put you on another road.

You won't notice the difference as an end user, because there's many
places where the choice of two parallel roads is difficult and any GPS
unit will make some mistakes. My guess is that you could only see the
difference when you would try to gather data on how many times you are
on the right track and how many times you're 0.5 off...

So if you ask me, "better rounding is better" and we should use anything
that rounds better :)


Clinton Gladstone schreef:
> Elrond<elrond+openstreetmap.org at samba-tng.org> wrote:
>> "incorrect" is probably too hard (except for the very
>> special case, where I needed the better rounding).
>> "suboptimal" would be a better term.
> I tested your patch, and could see differences in the map. However, I
> could not really determine which would be more 'optimal'.

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