Scott Atwood wrote:
On Mon, Dec 7, 2009 at 4:57 PM, Apollinaris
Schoell <[email protected]>
wrote:
Scott Atwood wrote:
How do people go about evaluating the
quality of data that is
being considered for import? I'm not sure there is a better source for
US National Park boundaries than the NPS itself. It's not like it's
possible to survey the boundaries by observations on the ground. The
only way I was able to even determine that the previous import was
problematic is that places I knew to be just inside the park boundaries
appeared just outside the imported park boundaries.
this data isn't much better either. It may be good for some parks. if
you can verify the data is good then import.
I don't mean to belabor the point, but how do people typically
evaluate the quality of data that is essentially nothing more than
imaginary lines on a map?
same as you did. compare it with local knowledge, compare with other
source. In some cases borders can be seen on the yahoo images. an area
used for farming or housing can be easily identified and often touches
these borders
be careful when comparing because even google, yahoo, garmin, ....
have many errors or old data.
--
Scott Atwood
The hill isn't in the way, it is the way.
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