Sorry, I forgotten to add this: It seems the reason is that --polygon-desc-file is not working well any more. So main reason is, that the map is getting bigger. You can see it in last mails attached kml-files. Henning On 18.01.2018 22:33, Henning Scholland wrote:
Hi Gerd, I have quite bad news.
My map of China increased size about 300 mb (before 1.6 Gb, now 1.9Gb) just by following this suggestion adding --align-for-dem=1200.
hgt-files are same, osm-data is same. bounding polygon for splitter is same and also tiles look similar. I was using latest mkgmap (4070) for both tests and x-dem-dist=9942,9942,9942,19884,39768 x-overview-dem-dist=79536
South east asia increased from 1.15 to 1.4 Gb with same work flow.
I'm sorry :-(. If you need anything or if I should test something, please let me know.
Henning
On 18.01.2018 01:42, Gerd Petermann wrote:
Hi all,
see http://www.mkgmap.org.uk/websvn/revision.php?repname=splitter&rev=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 _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
_______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev