Augusto,
The details and history of individual OpenStreetMap (OSM) features can
be checked as follows:
- go to http://www.openstreetmap.org/
- zoom to your area of interest (the smaller it is, the better)
- click on the [+] in the upper-right corner of the map
- enable the data overlay
- follow the instructions in the side bar that opens
- at the end, you should be on a similar page like this one with all
details for a given node, way or relation:
http://www.openstreetmap.org/browse/way/25905090
For a more comprehensive overview in a given area of interest, you
probably have to make yourself familiar with one scripting language or
another. You don't have to be a programmer in the strict sense, I would
say. I am myself not a programmer, but I managed to read through all
European OSM data as provided in daily updates through
http://download.geofabrik.de/osm/europe/.
In my small exercise, I checked the last modification timestamp of ~2
million OSM highway features. Some 50% of them have been last modified
in 2010, about 25% have been last edited in 2009 and another ~25% in
2011. There are also some traces of OSM highways with older modification
timestamps. See this screenshot for a summary of the results:
http://www7.pic-upload.de/26.06.11/6au9q7ja8ny.png
Hope this helps, Hermann
On 22/06/2011 22:08, Steve Coast wrote:
can someone help?
On 6/22/2011 1:06 PM, A. Jouvin wrote:
thank you for qucik response.
I am not a programmer, and I did not understand. What is OSM and how /
where to get it
thank you
On 22 Jun 2011 at 12:41, Steve Coast wrote:
datetime is attached to every object in OSM
On 6/22/2011 12:30 PM, A. Jouvin wrote:
Stee
Is there a way of knowing how old the data is in the maps? So as
to access how accurate it
may be?
For example the direction of a street. If it is too old, it may
have changed.
regards
Augusto
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