[OSM-newbies] using the Overpass API

[Jeff Meyer]

Do any other subscribers think it's funny to see an Overpass API thread on
newbies@?


On Mon, May 20, 2013 at 12:50 PM, MERIGHI Marcus
<mcmer-osm-newbies at tor.at>wrote:

> andrew.salzberg at gmail.com (Andrew Salzberg), 2013.05.17 (Fri) 19:27
> (CEST):
> > just trying out the overpass API - very happily able to build scripts
> here
> > in overpass turbo that run great (http://overpass-turbo.eu/) but wanted
> to
> > take the next step and a) write a script in text file and b) send a
> request
> > via bash so that ultimately I can write a script to loop this for a few
> > cases.
> >
> > I'm basically an API newb (not just an OSM API newb) so I'm able to do
> > things like write a GET request but I'm not sure what the actual address
> I
> > should be putting in my request to overpass is? Try as I might I can't
> find
> > it in here: http://wiki.openstreetmap.org/wiki/Overpass_API I have
> working
> > .txt file with an <osm_script> in it that I'd like to send via bash to
> > overpass... if that makes sense.
> > any help much appreciated.
>
> my script below and attached, not used for about two years:
>
> bye, marcus
>
> #!/bin/sh -e
> # 14.0498277 48.3033928 14.6455346 48.5420446
> # lon-min    lat-min    lon-max    lat-max
> # top/max    left/max   bottom/min right/min
> # lon=laenge, lat=breite
> lonmin="${1}"
> latmin="${2}"
> lonmax="${3}"
> latmax="${4}"
> #
> # get data of larger areas from:
> #
> # http://wiki.openstreetmap.org/wiki/Overpass_API
> # http://overpass.osm.rambler.ru/ (production)
> # http://www.overpass-api.de/ (testing)
> #
> # our query will be:
> #
> # union means: put all query results in to one result set
> # <union>
> #  we do a even more comprehensive search than recommended in
> #  http://wiki.openstreetmap.org/wiki/Overpass_API#The_map_query
> #  because simplifyway does not like missing nodes/ways.
> #
> #  first get all nodes for the bbox
> #  <bbox-query s="51.249" n="51.251" w="7.148" e="7.152"/>
> #  get all relations from nodes; keep default variable "_" populated
> #  with bbox query by putting result into "rels"
> #  <recurse type="node-relation" into="rels"/>
> #  get all ways from nodes, fill default variable "_" with result
> #  <recurse type="node-way"/>
> #  get all relations for just discovered ways; keep result of node-way by
> #  putting new results into var "waysrels"
> #  <recurse type="way-relation" into="waysrels"/>
> #  finally get all nodes for these ways, accessing default variable "_"
> which
> #  was filled by way-relation above
> #  <recurse type="way-node"/>
> # </union>
> # we want the result with all data (user, version, timestamp, ...) so we
> can
> # open it in JOSM and others
> # <print mode="meta"/>
> #
> # The attributes n and s are used for the latitudes of the
> # bounding box, w and e for the longitudes. See more details
> # about bbox below.
> # s the southern limit (bottom lat)
> # n the northern limit (top lat)
> # w the western limit (usually lower lon)
> # e the eastern limit (usually higher lon)
> #
> # possible values of recurse:
> # relation-relation, relation-backwards, relation-way,
> # relation-node, way-node, way-relation,node-relation, node-way
> #
> # create the url to query
> url="http://overpass.osm.rambler.ru/cgi"
> url="${url}/interpreter"
> url="${url}?data="
> url="${url}%3Cunion%3E"
>
> url="${url}%3Cbbox-query%20s=%22${latmin}%22%20n=%22${latmax}%22%20w=%22${lonmin}%22%20e=%22${lonmax}%22/%3E"
> url="${url}%3Crecurse%20type=%22node-relation%22%20into=%22rels%22/%3E"
> url="${url}%3Crecurse%20type=%22node-way%22/%3E"
> url="${url}%3Crecurse%20type=%22way-relation%22%20into=%22waysrels%22/%3E"
> url="${url}%3Crecurse%20type=%22way-node%22/%3E"
> url="${url}%3C/union%3E"
> url="${url}%3Cprint%20mode=%22meta%22/%3E"
> # now get the stuff and print it to stdout
> lynx -dump "${url}"
> #
> # does not work, ways/nodes missing
> # lynx -dump "
> http://www.overpass-api.de/api/xapi?*[bbox=${bboxstr}][@meta]" \
> # print "getting osm data from
> http://www.overpass-api.de/api/xapi?*[bbox=${bboxstr}][@meta]"
> # print "getting osm data from
> http://api1.osm.absolight.net/api/0.6/map?bbox=${bboxstr}"
>
> > !DSPAM:519668b88291234514069!
>
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>
>


-- 
Jeff Meyer
Global World History Atlas
www.gwhat.org
jeff at gwhat.org
206-676-2347

OpenStreetMap: Mapping with a Human Touch
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