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
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