[mkgmap-dev] Empty Areas in US West (Area too small to split)?

Fri May 6 16:52:41 BST 2011

Dominik,

> Hi WanMil,
>
> thanks for the pointers. Question is then:
> 1) How can I create an incentive for you to continue? ;-) (Any estimates?)

find another Java programmer ;-)
At the moment I am very busy with the locator branch so the chances are 
low that I will have time to continue with that. If anyone has some 
spare time and wants to have a look on it I will provide my findings and 
some tips how that possibly can be fixed.

> 2) Do you know any workaround?

I am not sure. Maybe it helps if you split the tile exactly at or very 
close to the given coordinate.

WanMil

>
> Dominik
>
> On 05.05.2011, at 20:33, WanMil wrote:
>
>> Dominik,
>>
>> I think this is a known problem of mkgmap.
>>
>> The problem is that the algorithm that divides the map into subdivisions
>> has to consider several restrictions. The current algorithm is not very
>> optimal to solve these restrictions.
>> I started working on this but didn't finish up to now
>> (http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2011q1/009960.html).
>>
>> WanMil
>>
>>> Hi,
>>>
>>> when I take the geofabrik US West extract, run it through splitter and then try to run mkgmap on it, I get errors on a couple of areas [1]. I tried reducing the max-nodes parameter for the splitter from 1000000 to 750000, that didn't help. The problem in this case seems to be not too many nodes, but rather *too few*.
>>>
>>> When I try loading those mentioned areas into JOSM, I get an error message: "No data found for this area."
>>>
>>> Mkgmap doesn't seem to handle this well. The map generation process stalls without any further error message. Could this be fixed?
>>> I can provide the original us-west.osm.pbf on request.
>>>
>>> Regards,
>>>
>>> Dominik
>>>
>>> [1] Log Output:
>>>
>>> SEVERE (MapSplitter): ../63240355.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=38.93716&mlon=-121.78252&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240355.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=38.93716&mlon=-121.78252&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240363.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=35.72533&mlon=-120.98516&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240363.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=35.72533&mlon=-120.98516&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240358.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=34.96583&mlon=-111.85854&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240358.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=34.96583&mlon=-111.85854&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240358.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=34.96583&mlon=-111.85854&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240358.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=34.96583&mlon=-111.85854&zoom=17 (reduce the density of points, length of lines, etc.)
>>> SEVERE (MapSplitter): ../63240358.osm.gz: Area too small to split at http://www.openstreetmap.org/?mlat=34.96583&mlon=-111.85854&zoom=17 (reduce the density of points, length of lines, etc.)
>>> _______________________________________________
>>> mkgmap-dev mailing list
>>> mkgmap-dev at lists.mkgmap.org.uk
>>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>>>
>>
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