[mkgmap-dev] Error in mkgmap r-3676, wrong preview generation

Sun Jul 3 05:15:54 BST 2016

Hi Gerd,

please make a really solution of the error or untouch the code. No error 
mesasage ! Maybee a error message prevent mkgmap to create the _mdr.ing. 
I use a workaround with cgpsmapper to create the preview.img. I am 
angry, that my workaround wil lnot longer work, if mkgamp gives me error 
message.thank you.
thomas

by the way... : the problem is: mkgmap creates many 0x4a for one 
maptile. it should creates only one 0x4a with the tile-boundaries, like 
in the corrresponding tdb. Maybee is the solution, to use the same 
algorythmus for writing 0x4a in preview like in tdb ?

Am 01.07.2016 um 10:57 schrieb Gerd Petermann:
> Hi,
>
> I am back from a nice cycle trip to Sicilia. I did not yet investigate the problem in detail,
> but I can for sure say that I did not think about this situation when I wrote the code for the
> overview map creation.
> If nobody claims that mkgmap should support this I would also prefer to print an error
> message and stop processing.
>
> Gerd
>
>
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Steve Ratcliffe <steve at parabola.me.uk>
> Gesendet: Samstag, 18. Juni 2016 18:19
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: Re: [mkgmap-dev] Error in mkgmap r-3676, wrong preview generation
>
> Hi
>
> An update on the problem.
>
> The contour line tiles have the levels 0:24,1:23,2:22,3:20,4:18
> whereas the content tiles have levels of 0:24,1:22,2:20,3:18,4:16,5:15
>
> The first tile encountered determines the levels in the overview map
> and so the overview maps are different.  It is surely a bug that the
> map outlines are wrong and so I will look at this next.
>
> However I am not sure what the full solution is though as there are
> other noticable problems, as the overview map is going to be wrong for
> one set of tiles whatever is done.  Perhaps mixing tiles with
> different levels should not be allowed?
>
> ..Steve
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