On 3 February 2011 11:32, Matt Amos <zerebub...@gmail.com> wrote: > On Thu, Feb 3, 2011 at 11:03 AM, Jerry Clough : SK53 on OSM > <sk53_...@yahoo.co.uk> wrote: > > OS OpenData is out-of-date. The April 2010 StreetView tiles are at least > 2 > > years old, and where I've checked VDM is similarly dated. I have not > failed > > to find a significant change between OS OpenData (and Bing imagery) in > > detailed surveys I've done this year. Chris Hill has a similar > experience. > > +1. > > i've had to remove several things which were traced and tagged from OS > which are no longer present. for example; [1], which was demolished in > 2007 (and deconsecrated some time previously). > > it's not the use of OS data which is the problem, it's using it in > areas of which there's no recent local knowledge and, pretty much by > definition, any bot would have no local knowledge ;-) >
Would it be useful to be able to add annotations to base layers to indicate where they are wrong. For example to add a polygon to a Bing or Yahoo aerial or OS Streetview layer that partly obsures the image and says 'this area has changed' or something similar. This would need to be flagged for re-checking when the source material is updated. Another approach would be for the submit process to put up an alert 'you are adding a feature which has previously been deleted - the deletion included the following comment in the changeset'. Regards, peter > > cheers, > > matt > > [1] http://www.openstreetmap.org/browse/changeset/6152842 > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-gb >
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