Hi All, Apologies for cross-posting to two lists but discussions have been split across both lists. Please reply to the dev list.
There are now some new daily diff files available on the planet server that address some issues with the existing daily diff files. These new files are produced using a more reliable mechanism that is already used by the hourly and minute diffs. They have a different naming standard so there's no conflict. http://planet.openstreetmap.org/daily/ The timestamp.txt file will tell you what the latest file is available to be downloaded rather than relying on 404 server responses if new files aren't available. The osmosis --read-change-interval task will work with the new files but not the old. The task will merge all available files into a single change stream that can then be written to a file using --write-xml-change (for subsequent import to a db) or passed to another task such as --apply-change for merging into existing xml files. The new files are gzip compressed due to performance issues with bzip2 compression in java. This means they're bigger but we're still only talking approximately 10MB per day. There is one big GOTCHA. The new files use UTC timing, the old files use BST timing. This means that the contents of the files are different. If you transition to the new file format you should re-apply the new gzip file corresponding to the most recently applied bzip2 file in order to capture the missing hour. If you don't do this I *think* you'll miss an hours worth of data from 11pm to midnight. If the last file you imported was daily-20080622-20080623.osc.bz2, you should start on the new files from 20080622-20080623.osc.gz. Let me know if you see any problems. Cheers, Brett _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
