On Thu, Jun 11, 2015 at 09:42:29AM -0400, 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 that aerial imagery may be several years out of date.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 in Rensselaer, NY had been realigned with the out-of-date bing 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 imagery was out of date, but the armchair mapper didn't bother 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. > > i don't object to careful armchair mapping, i do it myself, but > you need to keep in mind that the imagery available may a number > of years old. i can name a number of highways in the Capital District > of NY where the imagery is old and the highways have been realigned > and/or reconfigured. this will be true in many places. if you see a > mismatch, it would be a good idea to look at the history and try to > contact the the mapper responsible for the mismatch first.
In those cases i am typically quick in trying to revert the changesets
in mind. And be shure to send emails to affected mappers and/or comment
on the changesets.
And you could also set a note on that area mentioning the
out-of-date'ness of sat images.
Flo
--
Florian Lohoff f...@zz.de
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