[Talk-us] a plea to armchair mappers

Darrell Fuhriman darrell at garnix.org
Thu Jun 11 15:36:22 UTC 2015

Another useful tool might be to have a repository of local imagery servers that can automatically become available when in an appropriate area.

For instance, I use the 2014 NAIP imagery via a WMS server in JOSM. It’s only 1m resolution, but it’s great for double checking that nothing has changed.

At smaller zoom levels, that might actually be a preferable default to always using bing, and having the imagery change, combined with imagery dates, draws attention to the fact that things might not always be current.


> On Jun 11, 2015, at 07:54, Bryan Housel <bryan at 7thposition.com> wrote:
> There is an open item in iD to display the date of the aerial imagery alongside the attribution message.  We actually don’t get this from most tile providers, but we can get it from Bing in the response header.
> Would definitely welcome a pull request if someone wants to take a shot at implementing this.
> https://github.com/openstreetmap/iD/issues/2492 <https://github.com/openstreetmap/iD/issues/2492>
> Thanks, Bryan
>> On Jun 11, 2015, at 10:05 AM, Kam, Kristen <kristenk at telenav.com <mailto:kristenk at telenav.com>> wrote:
>> We need to make it more easier to load up-to-date imagery to  our OSM editing applications. And I think something easy as publicizing the date of the imagery collection would get folks to do a double take before using older imagery.
>> Kristen
>> Sent from OWA on Android
>> ________________________________________
>> From: Richard Welty <rwelty at averillpark.net <mailto:rwelty at averillpark.net>>
>> Sent: Thursday, June 11, 2015 6:42:29 AM
>> To: Talk Openstreetmap; Help for newbie mappers
>> Subject: [Talk-us] a plea to armchair mappers
>> 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 that aerial imagery may be several years out of date.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 in Rensselaer, NY had been realigned with the out-of-date bing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 imagery was out of date, but the armchair mapper didn't bother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.
>> thanks,
>>   richard
>> --
>> rwelty at averillpark.net <mailto:rwelty at averillpark.net>
>> Averill Park Networking - GIS & IT Consulting
>> OpenStreetMap - PostgreSQL - Linux
>> Java - Web Applications - Search
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