[OSM-talk] [Tagging] Google has dual carriage way where it'snot built yet

Frederik Ramm frederik at remote.org
Sat Oct 10 22:50:54 BST 2009


Anthony wrote:
> Even then, I have mixed feelings about it, until there's support in
> the major editors for downloading and editing subsets of data.

First of all, this would have to be supported by the API as well. And it 
is always very difficult because "everything's connected". Imagine you 
download only traffic signals, then delete some and move some around; 
later you find that you have actually changed a whole lot of road 
geometries where traffic lights were actually part of the roads - but 
you didn't see that in your editor. (Most likely your deletions would 
not even go through.)

Recent JOSM versions do have an experimental filtering feature where you 
could easily say "hide everything from me that is tagged planning or 
historic" (in Karlsruhe, we have a former railway line cutting right 
through a block of buildings). You can even combine filters and do a lot 
of fancy stuff. Experimental and not for the novice though.


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