[mkgmap-dev] Bug - mkgmap distance to insert additional points on straight lines too long

Tue Aug 14 20:01:30 BST 2012

well I found the main problem.

As soon as I inserted a single 0x00 type of line, or made 0x14, 0x15 or 
0x1a (!!!!!) routable, then the autorouting for the whole map got some 
weak spots - amongst them the problem with lines over 800m without any 
point not usable for routing anymore, or any routable line connected to 
a line with any additional attribute (like unpaved, or motorcar=no) also 
being blocked for routing (only within one tile).

I still think however, that it showed that we shouldn't allow lines 
without a node for over 800m.
I would love to see if there is any improvement to long distance 
autorouting, by making sure that the map doesn't contain any routable 
lines fully straight without points. I don't think those are often 
present, but ferries would often be longer than 800m without any node.

Also if I knew where I could change the maximum nodes, that a single 
routable line contains, there could be affections on routing.
On 14.08.2012 13:59, Steve Ratcliffe wrote:
> On 13/08/12 17:42, Felix Hartmann wrote:
>> Well the title says most of it. AFAIK there is some setting in mkgmap,
>> that splits up ways, or adds additional points to ways that are fully
>> straight.
> I can't find such a thing after a quick look, but it should be easy to
> add if there isn't one.
>
> I'll take a look at it later today.
>
> ..Steve
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-- 
keep on biking and discovering new trails

Felix
openmtbmap.org & www.velomap.org