Hi Lars, I'm doing some experiments to get a solution for the same (using a bounding polygon instead of bbox) question using osmosis. I did some experiments using osmosis, but ran into problems.
I tried the following: 1. update using merged daily-diffs: 1.1 get one-week-old-planet.osm 1.2 cut AOI (--bp) from one-week-old-planet.osm (incl. sorting and completeWays and completeRelations) 1.3 get all the daily-diffs from last week to now 1.4. merge the 7 diffs (sorting at each merge and write task) 1.5 apply the merged diff to my one-week-old-AOI.osm 1.6 cut AOI (--bp) from patched-AOI.osm (incl. sorting and completeWays and completeRelations) 2. compare with recent AOI.osm 2.1 get recent-planet.osm 2.2 cut AOI (--bp) from recent-planet.osm (incl. sorting and completeWays and completeRelations) => expectation: there should be no differences comparing the recent-AOI.osm and the patched-AOI.osm 3. update using applying the diffs step by step 3.1 get one-week-old-planet.osm 3.2 cut AOI (--bp) from one-week-old-planet.osm (incl. sorting and completeWays and completeRelations) 3.3 get all the daily-diffs from last week to now 3.4 apply and cut to one-week-old-AOI.osm for each daily-diff (always incl. sorting and completeWays and completeRelations) => multipatched-AOI.osm => expactation: there should be no differences comparing any pair of recent-AOI.osm, patched-AOI.osm and the multipatched-AOI.osm But this workflow produces three different "*-AOI.osm" For the tests I used osmosis from trunk (rev. 20665), because there was a change focusing the completeRelations feature. Marco Lars Lingner schrieb: > John Smith schrieb: > >> On 25 March 2010 17:54, Frederik Ramm <[email protected]> wrote: >> >>> is the osm2pgsql bbox filter also usable for applying diffs (in a >>> situation where somebody wants to keep a country extract in osm2pgsql >>> form up to date), or does it only work for full imports? >>> >> I think it only filters nodes, I haven't checked for a while but >> previously I had ways with no nodes in the database outside the area I >> was filtering... >> >> > > What would be the best way to keep an individual extent updated? > > Fetching the planet, extracting the extent of the area of interest and > create my own diffs? > > I could also apply the planet wide diffs and remove everything outside > of the extent afterwards. But I don't like this idea. > > Is there a way to process the diff files in a way that the diff only > contains changes in my area of interest? > > Thanks for any hints. > > > Lars > > _______________________________________________ > dev mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/dev > _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
