Hi Randolph,
what do you mean by "ways"? Any line, road with an address, road used
for routing? I don't remember if I ever spotted similar problem.
On the other side, I think splitter can be better tuned for current
mkgmap. I get impression, that splitter is designed to make a good work
with simple maps and doesn't account for addresses, routing nodes od DEM
data. It would be nice, if there were more options, than maxnodes.
For my maps, I split OSM data in two stages. First I prepare artificial
data, that I believe represent better actual size of compiled tiles.
I extract addresses as points and highways as simple 2-points lines (I
do it with modified osmfilter). Then I make splitter to calculate all
tiles using as an input following data:
- OSM source
- 0-2 times extracted addresses
- 6-10 times extracted highways
- 1-2 times contour lines
I believe, that additional points form address account for some NET
size, points form highways for additional NOD size and duplicated
contour lines for DEM size. It needs some tuning for different areas,
but I think I get a bit more uniform sizes of img than with direct
splitting.
On second stage I use prepared areas.list to split real data.
Basically I do something like this:
osmfilter.exe data.o5m --keep= --keep-ways=highway=* -o=net.o5m
osmfilter.exe data.o5m --keep= --keep-nodes=addr:housenumber=* -o=adr.o5m
splitter.jar --stop-after=split --max-nodes=3000000 data.o5m net.o5m
net.o5m net.o5m net.o5m net.o5m net.o5m net.o5m net.o5m adr.o5m adr.o5m
contour.pbf contour.pbf
splitter.jar --split-file=areas.list data.o5m contour.pbf
It would be helpful, if I could do it in a single pass. Maybe splitter
could filter internally specific nodes - these which would end as
routing nodes or address information and add some multiplier when
counting these nodes for splitting? Assuming this is easy to implement,
otherwise my procedure is good enough.
--
Best regards,
Andrzej
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