[mkgmap-dev] How to create an empty overview map (for transparent maps)

Mon Sep 13 10:54:38 BST 2021

I think just remove the warning. I could not notice any problem due to it (
and if there would be problems, by now at least one user of my maps should
have complained)

On Mon, 13 Sept 2021 at 12:09, Gerd Petermann <
gpetermann_muenchen at hotmail.com> wrote:

> Hi,
>
> yes, I think that message makes no sense in this situation. I am not sure
> why I decided to log this as an error.
> See https://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3679
>
> I've attached a patch to suppress the message if the input file is a
> ovm_*.img.
> I could also simply reduce severity to warning or remove it for good.
>
> Gerd
>
>
>
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von
> Felix Hartmann <extremecarver at gmail.com>
> Gesendet: Mittwoch, 1. September 2021 12:18
> An: Development list for mkgmap
> Betreff: [mkgmap-dev] How to create an empty overview map (for
> transparent      maps)
>
> If you create a separate map for buildings or contourlines only - usually
> there is no need for an overview map - or better no need for any content in
> the overview map - or am I missing something?
>
> Because those maps sometimes may have very large tiles, but very few
> levels (maybe only 24) - mkgmap creates an overview map at the next
> resolution - and will then often throw warnings such as:
>
> SEVERE (OverviewBuilder): Tile selection (0x4a) polygon for tile 84900000
> cannot be written in level 0 resolution 21, using 20 instead
>
>
> There is still a need for an empty overview map - as without it you cannot
> show the map in Basecamp/Mapsource - or transfer it with MapInstall.
> I know the overview map is only empty 0x4a polygons - just wondered if
> there is a better solution...
>
> --overview-levels=
> is not given.
>
> --
> Felix Hartman - Openmtbmap.org & VeloMap.org
>
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> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
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-- 
Felix Hartman - Openmtbmap.org & VeloMap.org
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