On 2015-06-11 06:42, Richard Welty wrote:
please, please when doing the armchair mapping thing, be aware
that aerial imagery may be several years out of date.
yesterday i discovered that a highway reconfiguration i'd mapped
in Rensselaer, NY had been realigned with the out-of-date bing
aerial imagery. i was able to locate my GPX tracks and put it back,
but i still had to revisit the site to re-verify some connecting roads.
i had even put a README tag on the roads warning that the
imagery was out of date, but the armchair mapper didn't bother
to, you know, read the README.
With both outdated imagery and the Ohio River [1], I've had better luck
placing redundant `note` tags on every way that such a mapper would be
inclined to delete. iD shows `note` in a big box in the sidebar. It's a
bit harder to miss than a (heretofore) ad-hoc tag that would be
relegated to the All Tags section. Potlatch 2 doesn't support anything
like it, unfortunately.
If it gets really bad, you could try spelling out "DO NOT ERASE" in
aerialway=contrail ways. :-P
[1] http://wiki.openstreetmap.org/wiki/Ohio_River
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