[mkgmap-dev] [mkgmap-svn] Commit r4300: experimental code to reduce NOD size (option --routable)

Sat Oct 12 12:54:32 BST 2019

Hi Gerd

(I started writing this before your next post arrived)

Assuming I understand the resultant behaviour correctly concerning the
2nd change: I'm against the idea not having NODs for terminal roads
becoming the default. It may not have obvious effects in heavily built
up areas, but elsewhere, a reasonably proportion of places that someone
might wish to navigate to are reached by a single track/driveway. The
entrance to this access road will rarely be the closest point a road.
Sometimes it is even a different road!   

Ticker

On Sat, 2019-10-12 at 10:28 +0100, svn commit wrote:
> Version mkgmap-r4300 was committed by gerd on Sat, 12 Oct 2019
> BRANCH: NET-no-NOD
> experimental code to reduce NOD size (option --routable)
> - don't add a route node for the ends of roads when they are not
> connected to other roads
> -don't write NOD info for roads which are not connected to other
> roads and which do not have boundary nodes
> Wanted effect: smaller NOD size 
> Problem of 2nd change: Routing at those roads behaves different,
> large detours may be calculated instead of a straight line which
> clearly says: routing problem
> new option --x-all-roads-to-nod can be used to get the old behaviour
> (with a larger NOD)
> 
> http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4300
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