Am 15.08.2011 20:22, schrieb master_axe:
regarding your OSM History Splitter:
If I have a full planet dump(including history, bz2), and I want to cut a BB
out of it, your OSM History Splitter is the tool to use?
yep.
So this would be the counter piece to say, osmosis (for current data only)?
It is a subset of osmosis (cutting only) that is also capable of history
data.
I ask because I recently made a small change to osmosis to read and write
the visibility tag, and in parallel found a perl script to extract history
(history-excerpt.pl)(I'm guessing these two do the same thing now). What's
the difference?
- the history-splitter is faster ;)
- it does requiree less ram (for the same features) with the tradeof
of reading the file twice (but its usually still faster)
- it is able to take its cutting-polygons from special .osm files
(only closed ways are used)
- when using the --softcut mode, it keeps the history of objects
complete; so if one version is inside the bbox, all versions are copied
Peter
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