osm-build-query
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Build a query for the OSM Overpass API that retrieves all elements within the bounding feature
187 lines (185 loc) • 5.6 kB
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<h1>Code coverage report for <span class="entity">osm-build-query/index.js</span></h1>
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Statements: <span class="metric">100% <small>(20 / 20)</small></span>
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Functions: <span class="metric">100% <small>(1 / 1)</small></span>
Lines: <span class="metric">100% <small>(20 / 20)</small></span>
Ignored: <span class="metric"><span class="ignore-none">none</span></span>
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<div class="path"><a href="../index.html">All files</a> » <a href="index.html">osm-build-query/</a> » index.js</div>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var OSMBuildQuery = function(key, bounds) {
var bbox; // (lower lat., lower lon., upper lat., upper lon.)
var lat = [];
var lon = [];
var coordinates = bounds.geometry.coordinates[0];
var lowerLat;
var lowerLon;
var upperLat;
var upperLon;
for (var c = 0; c < coordinates.length; c++) {
lon.push(coordinates[c][0]);
lat.push(coordinates[c][1]);
}
lowerLat = Math.min.apply(Math, lat);
upperLat = Math.max.apply(Math, lat);
lowerLon = Math.min.apply(Math, lon);
upperLon = Math.max.apply(Math, lon);
bbox = lowerLat + ',' + lowerLon + ',' + upperLat + ',' + upperLon;
/* This query looks for nodes, ways and relations
with the given key/value combination. */
var query = '[out:json][timeout:90];' +
'(' +
'node["' + key + '"](' + bbox + ');' +
'way["' + key + '"](' + bbox + ');' +
'relation["' + key + '"](' + bbox + ');' +
');' +
'out body;' +
'>;' +
'out skel qt;';
return {
data: query
};
};
/** @module osm-build-query */
module.exports = OSMBuildQuery;
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