Hi everyone, I have been mapping in Korea a lot. In July I discovered a problem because I took a trip to an area I had mapped before. When I went to use my new data to check against the map I thought I was going mad. I was sure I had mapped certain roads, and they were there on the map, but my name was no longer in the history. In fact, there seemed to be only one version of the road in existence.
Here is one way I know I mapped: http://www.openstreetmap.org/browse/way/44818037 It was deleted as part of this changeset, which is rather large: http://www.openstreetmap.org/browse/changeset/7300872 Here's another: http://www.openstreetmap.org/browse/way/83432223/history >From this large changeset: http://www.openstreetmap.org/browse/changeset/7575051 I contacted the mapper responsible, who apologised to me and basically said that they messed something up, or something went wrong during the editing session, couldn't fix it, so did the best they could to put things back. So, I am happy that it was not malicious, but not happy that a lot of my work (and others' work) has been lost/needlessly altered, and there is no continuity in the history. Anyway, I'd like to know what is the best course of action. I still have my GPS traces and photos of streetsigns and other detail, so I could reload it and re-map the area, but it's a big area... Should I... a) Ask someone to investigate what happened and show me what tools to use to recover/restore deleted data, bearing in mind that the current data seems to be identical and would overlap restored data? b) Check/re-map the areas using whatever data I have? c) Ignore the issue? d) None of the above I know that in some ways the database is 'self-healing' since mappers who spot discrepancies (due to whatever cause) will fix them. But these errors don't need to be discovered- I know they are there (and now you do too!). I also wonder if there should be some mechanism to stop (or at least draw attention to) massive edits/deletions before too much time goes by. Thanks, Andrew _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
