On 18 February 2011 00:08, Ben Last <[email protected]> wrote: > Quick question; how does this cope with updates to aerial/satellite imagery > that may change the offset for a given service at a given location?
In exactly the same way as, say, the Offset bookmarks offered by JOSM - it doesn't, and the mapper needs to notice that the imagery doesn't seem to line up any more. As such, as a baseline, using True Offset is at worst no worse than other options for managing your calibration. Though in fact, because the correction factors are maintained by the crowd, the story is actually likely to be more positive than that. With private offset bookmarks on JOSM, each individual mapper needs to notice the change and recalibrate, hopefully doing an accurate job. With True Offset, the first mapper to notice the change can update the stored offset. Others may fine-tune it. Everybody else just keeps mapping without noticing any change. Dermot -- -------------------------------------- Igaühel on siin oma laul ja ma oma ei leiagi üles _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
