Is it possible to get location data from KML file based on the latitude and longitude? When I am using npm node-geocoder that time I am getting a result which Google provided. But here I am having KML file from this file I need to get the result.
Please guide me to get a result from KML file.
Below: the code I am using getting data from geocoder API.
var NodeGeocoder = require('node-geocoder');
var options = {
provider: 'google',
// Optional depending on the providers
httpAdapter: 'https',
formatter: 'json'
};
var geocoder = NodeGeocoder(options);
var kmllatitude =req.body.latitude;
var kmllong =req.body.longitude;
geocoder.reverse({lat:kmllatitude, lon:kmllong}, function(err, res) {
console.log(err,"!!!!!!!!");
console.log(res,"####");
});
Is it possible to get location data from KML file based on the latitude and longitude? When I am using npm node-geocoder that time I am getting a result which Google provided. But here I am having KML file from this file I need to get the result.
Please guide me to get a result from KML file.
Below: the code I am using getting data from geocoder API.
var NodeGeocoder = require('node-geocoder');
var options = {
provider: 'google',
// Optional depending on the providers
httpAdapter: 'https',
formatter: 'json'
};
var geocoder = NodeGeocoder(options);
var kmllatitude =req.body.latitude;
var kmllong =req.body.longitude;
geocoder.reverse({lat:kmllatitude, lon:kmllong}, function(err, res) {
console.log(err,"!!!!!!!!");
console.log(res,"####");
});
1 Answer
Reset to default 5I'm supposing you downloaded the KML file from your Google Location History.
Since KML uses a tag-based structure with nested elements and attributes, based on the XML standard, you can use the read-xml package to obtain the data from your KML file.
This is what your KML file should be like:
<?xml version='1.0' encoding='UTF-8'?>
<kml xmlns='http://www.opengis/kml/2.2' xmlns:gx='http://www.google./kml/ext/2.2'>
<Document>
<Placemark>
<open>1</open>
<gx:Track>
<altitudeMode>clampToGround</altitudeMode>
<when>2018-01-18T23:48:28Z</when>
<gx:coord>-16.9800841 32.6660673 0</gx:coord>
<when>2018-01-18T23:45:06Z</when>
...
<when>2013-12-05T09:03:41Z</when>
<gx:coord>-16.9251961 32.6586912 0</gx:coord>
</gx:Track>
</Placemark>
</Document>
</kml>
Then I convert the XML text to Javascript object/JSON text. You don't have to do this step, but for me, it's easier to do and to explain. You can do that by using the xml-js package.
Another thing you have to do is to split the value of this tag <gx:coord>-16.9251961 32.6586912 0</gx:coord> since you have first the longitude and then the latitude, inside the same tag.
var fs = require('fs'),
path = require('path'),
xmlReader = require('read-xml');
var convert = require('xml-js');
// If your file is located in a different directory than this javascript
// file, just change the directory path.
var FILE = path.join(__dirname, './history.kml');
xmlReader.readXML(fs.readFileSync(FILE), function(err, data) {
if (err) {
console.error(err);
}
var xml = data.content;
var result = JSON.parse(convert.xml2json(xml, {pact: true, spaces: 4}));
// If your KML file is different than the one I provided just change
// result.kml.Document.Placemark['gx:Track']['gx:coord'].
// As you can see it is similar with the KML file provided.
for(var i = 0; i < result.kml.Document.Placemark['gx:Track']['gx:coord'].length; i++){
var results = result.kml.Document.Placemark['gx:Track']['gx:coord'][i]._text;
// As I said before you have to split the returned value.
var coordinates = results.split(" ");
var longitude = coordinates[0];
var latitude = coordinates[1];
console.log("lat/long: " + latitude + ", " + longitude);
}
});
Hope it could help you!