On 18/07/2010 13:54, Simon Ward wrote:
I just added a comment to the talk page about OS Opendata[1]: It seems
that some people have been using OS Opendata to “correct” existing data,
moving ways to match OS Opendata, and in some cases removing attributes
(such as surface=paved).
Please, please, please, pretty please don’t just assume your data is
better than the existing data, especially if yours is derived from
another source and the existing data is from a ground survey.
Hi Simon
In principle I understand what your saying & agree to some extent;
except that I think it's incorrect to assume that on ground surveying is
necessarily more accurate. GPS tracks are prone to being sent off course
by the surroundings such as heavy tree coverage & steep topography. In
these cases the maps are probably more accurate.
Good local knowledge is essential for accurate mapping which is why I
feel unsure about amending others traces if I don't know the area,
preferring just to add ways that hadn't previously been mapped.
Cheers
Dave F.
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