gathering the information of schools - with overpass-api

Question

i want to gather results with a search-request - suggested by the wiki.-page

btw see the central ressource for the tag-system http://wiki.openstreetmap.org/wiki/Tag:amenity%3Dschool

on overpass-api we can run this - as request for node, builiding and relaion:

<!--
This query looks for nodes, ways and relations 
with the given key/value combination.
Choose your region and hit the Run button above!
-->
<osm-script output="json" timeout="25">
  <!-- gather results -->
  <union>
    <!-- query part for: “building=school” -->
    <query type="node">
      <has-kv k="building" v="school"/>
      <bbox-query {{bbox}}/>
    </query>
    <query type="way">
      <has-kv k="building" v="school"/>
      <bbox-query {{bbox}}/>
    </query>
    <query type="relation">
      <has-kv k="building" v="school"/>
      <bbox-query {{bbox}}/>
    </query>
  </union>
  <!-- print results -->
  <print mode="body"/>
  <recurse type="down"/>
  <print mode="skeleton" order="quadtile"/>
</osm-script>

btw - this above code does not function - and this below also not. what is wrong here?

This query looks for nodes, ways and relations 
with the given key/value combination.
Choose your region and hit the Run button above!
-->
<osm-script output="json" timeout="25">
  <!-- gather results -->
  <union>
    <!-- query part for: “building=school” -->
    <query type="node">
      <has-kv k="building" v="school"/>
      <bbox-query {51.5557914,0.2118915,51.5673083,0.2369398}/>
    </query>
  <!-- print results -->
  <print mode="body"/>
  <recurse type="down"/>
  <print mode="skeleton" order="quadtile"/>
</osm-script>

why does this not run smoothly?

Answer 1

The first query runs fine, see the result on overpass turbo.

The second query is broken. The bbox element has the wrong syntax and the union is not closed. I fixed it for you. See the result on overpass turbo, the fixed query is:

<osm-script output="json" timeout="25">
  <!-- gather results -->
  <union>
    <!-- query part for: “building=school” -->
    <query type="node">
      <has-kv k="building" v="school"/>
      <bbox-query e="51.5557914" s="0.2118915" w="51.5673083" n="0.2369398"/>
    </query>
  </union>
  <!-- print results -->
  <print mode="body"/>
  <recurse type="down"/>
  <print mode="skeleton" order="quadtile"/>
</osm-script>

Try to use overpass turbo when constructing queries. It will show you a graphical representation of the results and syntax errors can be spotted easily.

gathering the information of schools - with overpass-api

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