[mkgmap-dev] Error BeNeLul

Tue Dec 26 09:10:59 GMT 2017

Hi Gerd,

thanks for your explanations. I just realized the exact meaning of the
error message. I misunderstood it and was confused. Size 1024 didn't
work, so I'm now trying 4096. I mean this issue just happens in very few
places. So my idea would be to keep it as it. As I read in our other
mail, it seems not the best idea to increase the size too much. I will
just let the maps compile and see the result and keep you posted.
But it seems to be better to manually tweak the areas.list.

Regarding the polygon, I think best is by default just use the polygon
of the map. I estimate, mkgmap don't know anything about the complete
map, so maybe splitter can write it in the templates.args (just an idea).

After thinking a while about the splitting, I ended up with two approaches:
1) max-area-size in km^2. I guess it's simple to implement, but of
course not very accurate.
2) calculate something like the densities-out.txt for all the hgt-files.
I'm not sure if it's worth to spend a lot of time coding for it, as it's
mainly will be run one time.

Bye
Henning

On 26.12.2017 05:23, Gerd Petermann wrote:
> Hi Henning,
>
> reg. 2nd: I think the message is clear: "Use a larger block size with an option such as --block-size=1024 or --block-size=2048"
> The value 65535 is the number of blocks, not the block size.
> I am not sure why this number is not calculated by mkgmap, I'll have a closer look later.
>
> reg. 3rd:
> Yes, we probably need another option like dem-poly to tell mkgmap a polygon. Points outside of the polygon would get height 0.
> I wrote this to Ervin but it seems that I forgor to copy the list.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Henning Scholland <osm at hscholland.de>
> Gesendet: Montag, 25. Dezember 2017 14:06:22
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Error BeNeLul
>
> Hi Gerd,
> I got a similar error in East Malaysia/Philippine in that tile:
> 63240328: 188416,5429248 to 538624,5650432
>
> If you need o5m-file let me know.
>
> I used:
> x-dem=E:\SRTM\hgt\SRTM3v3.0
> x-overview-dem-dist=276160
>
>
> 2nd:
> After you changed the file size limit I ran in some of the problematic
> tiles into:
> SCHWERWIEGEND (BlockManager): .\63240185.o5m: overflowed directory with
> max block 65534, current=65535
> SCHWERWIEGEND (MapFailedException): .\63240185.o5m: (thrown in
> BlockManager.allocate()) Too many blocks. Use a larger block size with
> an option such as --block-size=1024 or --block-size=2048
> It mainly happen in low data areas in China, Arabia and Australia. I'm
> not so sure, if I just should increase the block-size to 128000 or is
> there an limit? The examples are quite low values. Can you or someone
> else gave me a suggestion?
>
> 3rd:
> It seems overview-dem is generated for a larger rectangle area, not only
> for the existing map area. For areas out of map area (areasa.list,..) I
> would expect DEM is treated as 0 elevation.
>
> Henning
>
>
>
> On 25.12.2017 17:11, Gerd Petermann wrote:
>> Hi Arndt,
>>
>> I was not able to reproduce this problem. Please tell us your dem options.
>>
>> Gerd
>>
>> ________________________________________
>> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Arndt Röhrig <arndt at speichenkarte.de>
>> Gesendet: Montag, 25. Dezember 2017 03:17:14
>> An: Development list for mkgmap
>> Betreff: [mkgmap-dev] Error BeNeLul
>>
>> Happy Christmas :)
>>
>> i have a problem to build a NRWplus map or a BeNeLux map. (NRW plus all countrys around)
>>
>> The OSM-Data is reduced to "Bremen". SRTM is NRW & all countrys around.
>>
>> mkgmap 4000 build a correctly map. mkgmap 4019 crashes with this message:
>>
>> SCHWERWIEGEND (MapBuilder): ..\Splitter\88039020.osm.pbf: exception while creating DEM file
>> SCHWERWIEGEND (MapFailedException): ..\Splitter\88039020.osm.pbf: (thrown in MapBuilder.makeMap()) 23
>> SCHWERWIEGEND (MapBuilder): ..\Splitter\88039021.osm.pbf: exception while creating DEM file
>> SCHWERWIEGEND (MapFailedException): ..\Splitter\88039021.osm.pbf: (thrown in MapBuilder.makeMap()) 23
>>
>> gmapsupp will not build with this.
>>
>> http://www.speichenkarte.de/beta/88039020.osm.pbf
>>
>>
>> Greets
>>
>> Arndt
>> _______________________________________________
>> mkgmap-dev mailing list
>> mkgmap-dev at lists.mkgmap.org.uk
>> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>>
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>