[mkgmap-dev] Flood blocker

Sun Nov 21 12:28:21 GMT 2010


On 21.11.2010 04:47, Nakor wrote:
> On 11/20/2010 05:50 PM, WanMil wrote:
>>>> What about sub-sea tunnels or bridges over sea like Öresundbridge?
>>>>
>>>> So maybe it's better to exclude highways with bridge=yes or tunnel=yes.
>>>>
>>>> aighes
>>> You are right. Bridges and tunnels are already excluded. So that should
>>> be no problem.
>>>
>>> WanMil
>> Mmmh, within the next days we have to think about tuning the rules. At
>> the moment the blocker will block too much.
I also think, the best approach is to first look at the size of the sea. 
Then divide the size of the sea against a rating based on a score 
of attribute to each highway that falls into the sea based on a 
rating. (e.g. 0 for any highway or railway with brigde=* or tunnel=*, 
residential0=.5 , primary/secondary=0.3, highway=* & (sac_scale=* | 
mtb:scale=*) ==1,...) ===score X. Once this division reaches a certain 
factor, assume the sea is wrong. and drop it. Additionally or 
alternatively look at how much area (percentage) of say forest falls 
into the sea. If too much forest inside the sea, then bang, drop the 
sea. I'm not sure what is quicker to calculate. Areas like forest or 
certain highways (number).