[mkgmap-dev] Squaring off of land outlines

Tue Jan 28 08:26:26 GMT 2020

Hi Mike,

I can try to find out what's wrong but I would need a lot more details about your map creation process. Could be an error in mkgmap or in the OSM data or in the --levels option or in the --min-size-polygon option or --polygon-size-limits or ...

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Mike Baggaley <mike at tvage.co.uk>
Gesendet: Montag, 27. Januar 2020 19:07
An: 'Development list for mkgmap'
Betreff: Re: [mkgmap-dev] Squaring off of land outlines

HI Gerd, I don't have an old map, but this has been happening for some time
- I am not sure whether it has always done this, but thought it would be
worth trying a few old versions to see whether it is bug that got
introduced, or is one that has always been there. It looks similar to the
problem reported on Feb 18 2017 with "Terraced/pixellated coastline with
--precomp-sea" as the title. I am not using --precomp-sea, but the problem I
am getting is also in the sea outline. NopMap indicated that his problem was
fixed in r3819, however, I have downloaded the source to that version and
compiled it, and it exhibits the same problem for me.

Regards,
Mike

-----Original Message-----
From: Gerd Petermann [mailto:gpetermann_muenchen at hotmail.com]
Sent: 27 January 2020 08:36
To: 'Development list for mkgmap' <mkgmap-dev at lists.mkgmap.org.uk>
Subject: Re: [mkgmap-dev] Squaring off of land outlines

Hi Mike,

I am not aware of a folder that keeps all older releases or an error that
would be related to this.
Are you sure that you didn't change mgkmap options like --levels or the
style or the typ file?
Do you still have a map which looks better? In that case you should find the
string mkgmap in the img file, e.g. "mkgmap-r4431"

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Mike
Baggaley <mike at tvage.co.uk>
Gesendet: Montag, 27. Januar 2020 01:43
An: 'Development list for mkgmap'
Betreff: [mkgmap-dev] Squaring off of land outlines

Hello,

I am getting squaring off of the outline between land and sea at low zoom
levels (less than 16) - see attached BaseCamp images of Gran Canaria at
resolution 16 and at resolution 14 displayed at the same size. Obviously
some reduction in accuracy is expected at lower zoom level, but not these
artefacts. I'm not sure when this started happening but believe it was some
time ago. I can't seem to find the old releases to try previous versions,
http://svn.mkgmap.org.uk/mkgmap/releases/ just shows me an empty folder. Can
you point me to the correct download folder that contains the previous jar
files, and/or let me know if this is a known problem, and if so whether
there is a workaround?

Thanks,
Mike

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