Earle Martin wrote:
On Tue, Oct 28, 2003 at 02:18:08PM +0000, David Cantrell wrote:
See also Openguides and its content, where you have no way of knowing whether it's cut n' pasted from $payware_restaurant_review_site or copied from a book.
Only slightly; it's easy to prove something like a review was copied - compare it against the original. Reviews have a high uniqueness level[0], and running a diff against a review and a possible copy will quickly expose if it's original or not. Postcodes, on the other hand, are a very short alphanumeric string for which provenance is almost(?) impossible to determine.
Mmmm, fair point.
However, they wouldn't be bitching about the postcodes, but about the map references related to them. I just checked two of my data points. In both cases both the easting and northing are different to what streetmap has. Understandable, because postal codes cover either one very large place (such as a campus) or several smaller places (such as a row of houses), and of course because it's a matter of judgement which hundred meter division is closest to a chosen point.