On Mon, Mar 9, 2009 at 7:54 PM, Russ Nelson <[email protected]> wrote:
> *I* see OSM as an API for all possible geodata: everything that > doesn't move, and a few things that do. There are arguably many > things currently in OSM which should not be edited. For example, > political boundaries at every level. Well... Many of the boundaries could very well do with some editing. I have worked with the Norwegian-Russian and Norwegian-Finnish borders. First of all, the CIA data are very inaccurate (150 meters or more in some cases). Then you have borders that are not static (the Norwegian-Russian border follows the actual thalweg in some places, and most international borders are officially surveyed every 25 years or so). Even when you have a surveyed border and access to the official documents there are inaccuracies (Norway-Finland is accurate to a few millimeters, but the conversion to WGS84 for Norway-Russia is maybe as uch as a few meters inaccurate). And finally you have OSM tagging changing. Some objects needs a lot more care when editing than others, but that is not to say that someone with the right knowledge and sources available should be unable to edit them. - Gustav
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