[mkgmap-dev] max-nodes in splitter

Sat Nov 12 22:40:53 GMT 2016

Right, then you'll receive something like this:
GRAVE (MapFailedException): usa/60248060.o5m: (thrown in 
BufferedImgFileWriter.ensureSize()) There is not enough room in a single 
garmin map for all the input data. The .osm file should be split into 
smaller pieces first.
Number of MapFailedExceptions: 1
Number of ExitExceptions: 0

El 12/11/16 a las 23:34, Jakob Mühldorfer escribió:
> I am guessing that
>
>> Number of MapFailedExceptions: 0
>> Number of ExitExceptions: 0
>
> would be non zero, if I choose to high nodecount in one tile?
>
>
> Am 12.11.2016 um 10:05 schrieb Gerd Petermann:
>> Hi Jakob,
>>
>>
>> Jakob Mühldorfer-2 wrote
>>>    * Does the splitter print an error when max-nodes is too large, 
>>> or is
>>>      it unpredictable and will it only fail on the GPS device
>> No. There is no specific limit on the number of nodes in the device, the
>> value is just an easy to calculate number which expresses the density of
>> data. There are size limits in a single IMG file, and mkgmap will 
>> print an
>> error message (and write an empty img file) in such a case, so one 
>> wants to
>> avoid that. The actual tile size depends on various parameters, esp. the
>> style.
>>
>>
>> Jakob Mühldorfer-2 wrote
>>>    * Do tiles with more nodes mean higher or lower draw performance on
>>>      devices, or not matter at all
>> I have no idea. If you split an area into many small tiles instead of 
>> a few
>> larger ones, you will more often
>> cross the border of a tile when driving through the area, which probably
>> means that the device has to read the whole next tile. On the other 
>> hand,
>> reading a small tile should be faster.
>> Within a single tile the data is again organized in smaller sub 
>> areas, so
>> the impact on draw performance should be very small.
>> I've looked at a few Garmin gmapsupp files and they have tile sizes 
>> between
>> 2 and 12 MB, so Garmin seems not to care about it very much.
>>
>> Gerd
>>
>>
>>
>> -- 
>> View this message in context: 
>> http://gis.19327.n8.nabble.com/max-nodes-in-splitter-tp5885774p5885780.html
>> Sent from the Mkgmap Development mailing list archive at Nabble.com. 

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