On 19 Nov 2009, at 07:30, Brett Henderson wrote: > > Can you please update the wiki detailed usage page to reflect the > new task? > http://wiki.openstreetmap.org/wiki/Osmosis/DetailedUsage
Done. I noted that it is currently only in svn. > On this note, if anybody is keen Osmosis could really do with > somebody to take on creating a consistent set of filtering tasks for > all entity types (at a minimum it appears that relations are missing > from the existing set of tasks). I'm not sure what the requirements > would be and I don't do any filtering myself so don't have much > experience with it. I think all existing tasks have a bug at the > moment where they don't handle ',' characters in the key names which > probably should also be fixed. It should be rather simple to extend the existing filter set to relations. I have little experience with OSM/Osmosis myself, yet the task architecture was easy to understand. One thing needs to be clarified, though: should entities belonging to entity types not being filtered be passed through or thrown away? Currently, the node filters pass only nodes through, while the way filters pass non-way entities through unchanged. I see the practical reason for this, but it's not consistent. Maybe there should be an option to choose between behaviors. According to the wiki, a tag is a "Key-Value pair of Unicode strings of up to 255 characters (full Unicode characters, not bytes)." There is no mention of excluded list separator characters, so if it was changed from comma to something else, there would still be a bug and it would cause havoc with people used to using commas. One reasonable solution is some kind of escape character (backslash?) for non- splitting commas that are in the key name. It would also be helpful to have a switch to invert filter logic from accept to remove, e.g. so you can accept everything with a highway tag then remove everything that has the highway=motorway value. This would make for a cleaner operation (and command line) than trying to make an exhaustive list of every key-value you want to keep. It would be nice to have comments from users and developers about how the filter set should be designed, and once that's clear I think the new tasks would show up, since they are useful to a lot of people, but not major undertakings. -Andrew _______________________________________________ osmosis-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/osmosis-dev
