-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Nick, see my responses inline below:
> 1. Having referred to the OSM Damaged buildings crisis mapping > <http://wiki.openstreetmap.org/wiki/Damaged_buildings_crisis_mapping> > page, I'm not sure I'm making the best use of the data that's > there, e.g. how to access typhoon:reviewed and typhoon:damage ? > Would we be better not using shapefile downloads but another format > that preserves more of the source data structure? Have a look at the last column in the shapefiles which should be called 'tags'. In that you will find all the other tags that are not part of the other columns so you can query against that for typhoon:reviewed=* and so forth. > 2. Perhaps it's just the way that the shapefile attributes are > derived from the source OSM data, but how could we separate the > building type (house, office etc) from the damage status? Using the current tagging shceme we really cant since a damaged church for example would need building=damaged and building=church at the same time which isn't allowed. This is a known problem with this scheme and it will likely be fixed after the public is mostly done mapping, we will just go through and change the tags accordingly to the new schema. > 3. Finally (and apologies for touching on what I expect is a > long-running question), how are such data time-stamped? I'm > thinking for example of buildings that were already tagged as > damaged pre-typhoon, or that become repaired. We have the time stamps for when the objects were added to the DB and/or tagged as damaged so in theory you can work out what disaster everything relates to. In practice though we also plan to work out a better scheme for tagging this explicitely in the coming weeks/months after the disaster response has settled down a bit. Right now we are just running with the current scheme since a lot of people are already using it, we don't want to pull the rug out from under them during the response, even if we know our current schema is sub-optimal and will be changed in the future. Hope this addresses your questions. - -AndrewBuck -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJSj4L8AAoJEK7RwIfxHSXbIxYP/2azCNKgk4rmqDILRuOiBEbM Ps7kCNlTsZrBVloXvKLxDJTExKfq7bFGBiya2e3K+a9SQJWJmNt3AOqFj9NgooWs iBjp36njUwDWCIpvoWUrnLoh8E04DfTTZLATa7S5HmcvBvKb15jZ84kJhH8sDNdr umgI6p2iOYnNFXf7AXNPUmjeJDB9bnN7SOgMPNNBPiRDGYvJTJoCmKuSxN1l/L1e iOxCzI6i+JogSeI9G4lUVqinfUq3f4AXFOyhZYlD5KnOJUy91jOeojMJBm1wN/U2 AIZuBUa1eHoe3jDK48BjFa682iZtwyph6JbVuoTM0ERoe59uEY13wPdsizizQzP4 QLgVmxLSGFHCjyXJoSGq2xBlU8VD3Yu7QQ+mwGz6Kiru2TrEWWmRzkeXKzpM2yb2 cIg3DcoUspxDRgi3gily1kqzHY3g5bPhNNOMMuxuRn7I4TWd5m4BSVoAYtQXpEuF xU31ZX7w54AthW/98MAzUcHSDqlHxQjUXh0wa6suKawVdnDncu54wDyVGLQ/ap++ QehQpd/B3E44man1PDTG8wm1W4HB3l+iO5cdteRYcUhj2nrOunUhZvnsPB6P9Qie VFdXzAdnh41iz7EHN1vBwlj4+fkfiI9PK7Dwdw+YVAQ0OAme49mlwI0F55cW2utZ cFYUwdNwDrcnGs5D1s4j =oKQl -----END PGP SIGNATURE----- _______________________________________________ HOT mailing list [email protected] https://lists.openstreetmap.org/listinfo/hot
