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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | 1x 1428x 1428x 1428x 562x 1428x 561x 1428x 1x | /** ****************************************************************************************************
* File: toGeoJSON.js
* Project: geohash
* @author Nick Soggin <iSkore@users.noreply.github.com> on 19-Feb-2019
*******************************************************************************************************/
'use strict';
const
geohashToBBox = require( './geohashToBBox' );
/**
* toGeoJSON
* @description
* convert geohash to GeoJSON
* @param {string} hash - geohash to convert
* @param {object} opts - geojson options
* @param {boolean} [opts.includeGeohashAsProperty=false]
* include geohash string as a property in the GeoJSON
* @param {boolean} [opts.includeFeatureBBox=false]
* include bbox as a property in the GeoJSON
* @returns {*} geohash to geojson
*/
function toGeoJSON( hash, opts = {
includeGeohashAsProperty: false,
includeFeatureBBox: false
} )
{
const bbox = geohashToBBox( hash );
const data = {
type: 'Feature',
properties: {},
geometry: {
type: 'Polygon',
coordinates: [
[
[ bbox[ 0 ], bbox[ 1 ] ],
[ bbox[ 2 ], bbox[ 1 ] ],
[ bbox[ 2 ], bbox[ 3 ] ],
[ bbox[ 0 ], bbox[ 3 ] ],
[ bbox[ 0 ], bbox[ 1 ] ]
]
]
}
};
if ( opts.includeGeohashAsProperty ) {
data.properties.geohash = hash;
}
if ( opts.includeFeatureBBox ) {
data.bbox = bbox;
}
return data;
}
module.exports = toGeoJSON;
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