[mkgmap-dev] Size checks in splitter

Sun Dec 4 09:46:33 GMT 2016

Hi Stephen,

please explain I don't see how the suggested change in splitter is related to this.

Gerd

________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Steve Sgalowski <steve.sgalowski at gmail.com>
Gesendet: Sonntag, 4. Dezember 2016 10:36:02
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Size checks in splitter

when splitting Australia in the osm file of 7 gb in size , that would be usefull, as i set the max nodes to 90,000 to make smaller tiles as i get  frequently , that there is not enough room in a single gmapsupp.img file to hold all the data .

Stephen

On Sun, Dec 4, 2016 at 7:28 PM, Gerd Petermann <GPetermann_muenchen at hotmail.com<mailto:GPetermann_muenchen at hotmail.com>> wrote:

Hi all,

years ago we added a check in splitter r251 to make sure that it doesn't write extremely large tiles.

See

http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2012q1/013611.html

and

http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2012q4/015707.html

In short: The problem is that the precomp-sea option will add a huge amout of sea polygons to such a tile,

another problem is that the bounds option loads a huge amount of data.

I've now noticed that this check might not be useful if you use splitter to split a large file into a few smaller tiles,

esp. the whole planet with num-tiles=2.

I'd like to skip this check when

a) --num-tiles is used

b) --max-nodes value is large, e.g. higher than 10.000.000

Another option would be to add a new option like --skip-size-check.

What do you think?

Gerd

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