Re: [mkgmap-dev] splitter r585 ; dem-dist 3342 or 3314 ?

[Gerd Petermann]

Hi Thomas,

oops, sorry, 3342 was a typo, should be 3314  ~ 2^32 / (360 * 3600) and 9942 ~ 
2^32 / (360*1200)

Gerd


Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag von Thomas 
Morgenstern <webmas...@img2ms.de>
Gesendet: Donnerstag, 18. Januar 2018 10:49:32
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] splitter r585 ; dem-dist 3342 or 3314 ?

Hi Gerd, in some posts are written different -dem-dist . Which is the right,
3314 or 3342 ? For using with --align-for-dem  1" hgt ?
thomas

--
Von: "Gerd Petermann" <gpetermann_muenc...@hotmail.com>
Datum: Mittwoch, 17. Januar 2018 17:42
An: <mkgmap-dev@lists.mkgmap.org.uk>
Betreff: [mkgmap-dev] splitter r585 implements new option align-for-dem

> Hi all,
>
> see http://www.mkgmap.org.uk/websvn/revision.php?repname=splitter=585
>
> If I got that right you can use dem-dist 9942 for level 0 if hgt files are
> in 3'' resolution and splitter
> was executed with --align-for-dem=1200.
> For hgt 1'' files use dem-dist 3342 for level 0 and --align-for-dem=3600.
>
> This should reduce DEM size a lot AND increase precision.
>
> Gerd
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Re: [mkgmap-dev] splitter r585 ; dem-dist 3342 or 3314 ?

[Thomas Morgenstern]

Hi Gerd, in some posts are written different -dem-dist . Which is the right, 
3314 or 3342 ? For using with --align-for-dem  1" hgt ?

thomas

--
Von: "Gerd Petermann" 
Datum: Mittwoch, 17. Januar 2018 17:42
An: 
Betreff: [mkgmap-dev] splitter r585 implements new option align-for-dem


Hi all,

see http://www.mkgmap.org.uk/websvn/revision.php?repname=splitter=585

If I got that right you can use dem-dist 9942 for level 0 if hgt files are 
in 3'' resolution and splitter

was executed with --align-for-dem=1200.
For hgt 1'' files use dem-dist 3342 for level 0 and --align-for-dem=3600.

This should reduce DEM size a lot AND increase precision.

Gerd
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