Hi Sanderd17, are you sure that this feature is abandoned: Proposed_features/Emergency_service? Are there alternative tags in use? Because it is actually more than 1000 times in use according to taginfo and the user Kstaden didn't do anything else than setting masses of proposals to abandoned for formal reasons, even other already approved by use tags like wood=* with more than 500.000 active uses. --Dieterdreist (talk) 00:07, 2 October 2013 (UTC)
Overpass API limitations
just a few comments on your recently added Overpass API limitations section:
Overpass API isn't able to offer binary data (compressed text, or pbf format).
- Overpass API supports transport compression (GZIP) to reduce download sizes, see: https://lists.openstreetmap.org/pipermail/talk/2013-December/068821.html. Regarding PBF: you could easily enable that protocol on your own Overpass API instance, see: https://github.com/drolbr/Overpass-API/issues/37 for details.
And the size of an Overpass API query result is only known when the download is complete. This makes it impossible to give an ETA while downloading.
- That's correct, but can you explain a bit more in what way is this an issue?
As a result, Overpass API isn't made to extract country-sized regions with all (or nearly all) data in it. Use planet.osm mirrors or extracts for that. Overpass API is best used when the amount of data needed is only a fraction of the data available in the region.
- Not having an ETA and not being able to download country-size regions are really independent of each other. If memory and timeout parameters permit, there's really nothing which would stop downloads of even larger regions. Roland even explicitly permits this kind of large scale download scenarios (see Roland's FOSSGIS talk in Rapperswil as an example).
- My only aim was to be clear, Overpass API can be used for a lot of stuff, but listing the limitations and alternative options can make sure users look for other options more quickly. I'm sorry about my compression mistake, I thought it wasn't possible yet. For having no ETA, it might be an annoyance, and it's a limitation, however a small one. I didn't say it isn't allowed or possible to get large extracts of complete data, just that there are probably better options in that case (with static files). --Sanderd17 (talk) 14:37, 14 February 2015 (UTC)
- EDIT: meanwhile I modified the text a bit, I hope it's more correct now? --Sanderd17 (talk) 14:44, 14 February 2015 (UTC)