Wikidata SPARQL: how to include labels for grouped-by attributes - localization

I have a query that works OK:
SELECT ?language (COUNT (?lexeme) as ?lexemeCount) {
?lexeme dct:language ?language .
}
GROUP BY ?language
However, I can't think of how to add labels for languages (instead, or alongside with) language entity URIs. This fails with a time out exception on Wikidata:
SELECT ?languageLabel (COUNT (?lexeme) as ?lexemeCount) {
?lexeme dct:language ?language .
SERVICE wikibase:label {
bd:serviceParam wikibase:language "en".
}
}
GROUP BY ?languageLabel
So does this:
SELECT ?languageLabel (COUNT (?lexeme) as ?lexemeCount) {
?lexeme dct:language ?language .
?language rdfs:label ?languageLabel .
FILTER(lang(?languageLabel) = 'en') .
}
GROUP BY ?languageLabel
What query's result would include language names, rather than URIs?


Turning a comment into a community wiki answer:
SELECT ?languageLabel ?lexemeCount {
{
SELECT ?language (COUNT (?lexeme) AS ?lexemeCount) {
?lexeme dct:language ?language
}
GROUP BY ?language
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "en"
}
}

Related

How can I remove members from TFS groups programmatically in c#?

I have access to TFS users. I can get them into list but need to remove some of them from all the groups in our TFS. I've done so many researchers so far. Simply, I need to remove user from TFS groups.
I am open to any suggestions. Even for the crazy ones!
I've tried programmatical stuff. Don't have any clue.
After so many tries, finally got somewhere. My final code:
bool isError = false;
TeamFoundationIdentity memberId = ims.ReadIdentity(IdentitySearchFactor.DisplayName, id.DisplayName, MembershipQuery.Expanded, ReadIdentityOptions.None);
IIdentityManagementService2 ims2 = tcs.GetService<IIdentityManagementService2>();
string group = "Confidential Group;
TeamFoundationIdentity groupId = ims2.ReadIdentity(group);
if (groupId == null)
{
isError = true;
}
if (memberId == null)
{
isError = true;
}
if (!isError)
{
ims2.RemoveMemberFromApplicationGroup(groupId.Descriptor, memberId.Descriptor);
}
The error:
'TF50621: The Team Foundation group that you wish to manage is not owned by service host TEAM FOUNDATION, it is owned by . Please target your request at the correct host.'**

Check out the Azure Boards Team Tools.
It does most of what you need already:
message = string.Empty;
bool ret = true;
TeamFoundationTeam t = this.teamService.ReadTeam(this.projectInfo.Uri, team, null);
TeamFoundationIdentity i = this.identityManagementService.ReadIdentity(IdentitySearchFactor.AccountName, user, MembershipQuery.Direct, ReadIdentityOptions.None);
if (t == null)
{
message = "Team [" + team + "] not found";
ret = false;
}
if (i == null)
{
message = "User [" + user + "] not found";
ret = false;
}
if (ret)
{
this.identityManagementService.RemoveMemberFromApplicationGroup( t.Identity.Descriptor, i.Descriptor);
message = "User removed ";
}
return ret;
This function removes a user from a Team. A Team is a special kind of group, the function is easy to adapt to retrieve a Group to delete the user from though:
Replace
TeamFoundationTeam t = this.teamService.ReadTeam(this.projectInfo.Uri, team, null);
With:
string group = ...
var t = this.identityManagementService.ReadIdentity(group);
Or use the REST API :
DELETE https://vsaex.dev.azure.com/{organization}/_apis/GroupEntitlements/{groupId}/members/{memberId}?api-version=7.1-preview.1

Empty FullText property with Tweetmode.Extended [update May 30th]

I'm programming a .Net Core (2.1 preview, C# 7.3) Streaming Console App with L2T (5.0.0 beta 2) but even with the strm.TweetMode == TweetMode.Extended the query gives "compat" tweets back, the FullText property is empty.
You can reproduce this with the L2T query below.
I searched online, I've found something similar (with 'search' instead of 'Streaming') but no answers, except to add && strm.TweetMode == TweetMode.Extended, which I did.
Any ideas?
try
{
await
(from strm in twitterCtx.Streaming
.WithCancellation(cancelTokenSrc.Token)
where
strm.Type == StreamingType.Filter
&& strm.Track == "twitter"
&& strm.Language == "nl"
&& strm.TweetMode == TweetMode.Extended
select strm)
.StartAsync(async strm =>
{
await HandleStreamResponse(strm);
if (count++ >= 20)
cancelTokenSrc.Cancel();
});
}
[Update May 30th]
Found something. It's in the subroutine "HandleStreamResponse" (code below). The Status.TweetMode and Status.ExtendedTweet.TweetMode both return "Compat" for all tweets, but the full text of a tweet is in status.ExtendedTweet.FullText
But even with this check, retweets are truncated to 140 chars max. I do not need retweets for my progam so I filter them out.
I do not know, yet, how to filter retweets from a stream directly (is it possible?), so I check the retweetstatus of the Status from the stream result. It's in the code below.
FYI: In the examples of Linq To Twitter for this subroutine Joe Mayo uses the following line of code, but that doesn't work: Console.WriteLine("{0}: {1} {2}", status.StatusID, status.User.ScreenNameResponse, status.Text ?? status.FullText);
Even with && strm.TweetMode == TweetMode.Extended in the L2T query, the status.FullText is empty.
There is more code than neccesary in the example below, but I used it for clarity.
static async Task<int> HandleStreamResponse(StreamContent strm)
{
switch (strm.EntityType)
{
case StreamEntityType.Status:
var status = strm.Entity as Status;
if (status.RetweetedStatus.StatusID == 0)
{
if (status.ExtendedTweet.FullText != null)
{
Console.WriteLine("Longer than 140 - \"#{0}\": {1} (TweetMode:{2})",
status.User.ScreenNameResponse, status.ExtendedTweet.FullText, status.TweetMode);
}
else
{
Console.WriteLine("Shorter than 140 - \"#{0}\": {1} (TweetMode:{2})",
status.User.ScreenNameResponse, status.Text, status.TweetMode);
}
}
// Console.WriteLine("{0}: {1} {2}", status.StatusID, status.User.ScreenNameResponse, status.Text ?? status.FullText);
break;
default:
Console.WriteLine("Unknown - " + strm.Content + "\n");
break;
}
return await Task.FromResult(0);
}
}

Here are my observations:
status.ExtentendedTweet.FullText should hold the tweet in normal circumstances.
However, if the tweet is retweeted, then status.RetweetedStatus.ExtendedTweet.FullText should hold the tweet.
If you can't find the FullText in either of those circumstances, use status.Text.
I'm updating the sample with the following:
case StreamEntityType.Status:
var status = strm.Entity as Status;
string text = null;
if (status.ExtendedTweet?.FullText != null)
text = status.ExtendedTweet?.FullText;
else if (status.RetweetedStatus?.ExtendedTweet?.FullText != null)
text = status.RetweetedStatus?.ExtendedTweet?.FullText;
else
text = status.Text;
Console.WriteLine("Status - #{0}: {1}", status.User.ScreenNameResponse, text);
break;
Note: Via Twitter documentation (see Standard Streams), TweetMode doesn't apply to streams. Additionally, the docs say the ExtentedTweet should always be there with FullText. As we can see, that isn't the full picture in practice. I'll mark Streaming.TweetMode as obsolete in upcoming releases.

selec2 search - Return no results found message if a specific criteria didnt match

I am using select2 4.0.3 for search drop down. As per my understanding its default functionality is not to match with the start of entries the drop down have. So I have implemented the below given code
function matchStart(params, data) {
params.term = params.term || '';
if (data.text.toUpperCase().indexOf(params.term.toUpperCase()) == 0) {
return data;
}
return false;
}
$("select").select2({
placeholder : "Input country name or select region",
matcher : function (params, data) {
return matchStart(params, data);
},
});
My problem is, the dropdown is not showing "No results found" message even if there is no matching results found. Can anyone help me on this.
Thanks in advance.

Try changing the return value of matchStart from false to null.
Also you can remove the extra function around the matcher argument. The result:
function matchStart(params, data) {
params.term = params.term || '';
if (data.text.toUpperCase().indexOf(params.term.toUpperCase()) == 0) {
return data;
}
return null;
}
$("select").select2({
placeholder: "Input country name or select region",
matcher: matchStart
});

zf2 How to var_dump the result of select

I am trying to var_dump the result (only database rows) of select query.
I have a simple TableGateway (facotry service_manager)
public function shwoContactFormMessages)
{
$select = new Select();
$select->from(self::$tableName);
return $this->selectWith($select);
}
MY Controller:
public function fooAction()
{
$test = $this->contactFormTable->shwoContactFormMessages();
var_dump($test);
// This will show the results the column and it is working
while ($item = $test->current())
{
echo $item->messageFrom . "<br>";
}
return $view;
}
Result of var_dump($test):
object(Zend\Db\ResultSet\ResultSet)#327 (8) {
["allowedReturnTypes":protected]=>
array(2) {
[0]=>
string(11) "arrayobject"
[1]=>
string(5) "array"
}
["arrayObjectPrototype":protected]=>
object(ArrayObject)#302 (1) {
["storage":"ArrayObject":private]=>
array(0) {
}
}
["returnType":protected]=>
string(11) "arrayobject"
["buffer":protected]=>
NULL
["count":protected]=>
int(5)
["dataSource":protected]=>
object(Zend\Db\Adapter\Driver\Pdo\Result)#326 (8) {
["statementMode":protected]=>
string(7) "forward"
["resource":protected]=>
object(PDOStatement)#307 (1) {
["queryString"]=>
string(49) "SELECT `hw_contact_form`.* FROM `hw_contact_form`"
}
["options":protected]=>
NULL
["currentComplete":protected]=>
bool(false)
["currentData":protected]=>
NULL
["position":protected]=>
int(-1)
["generatedValue":protected]=>
string(1) "0"
["rowCount":protected]=>
int(5)
}
["fieldCount":protected]=>
int(8)
["position":protected]=>
int(0)
}
I would like to var_dump the database rows only instead of the above object.

This is because the ResultSet is designed to give you each item "On Demand" rather than loading them all at once, which can cause you to use huge amounts of memory if the resultset is large.
You can get the full resultset as an array of items if you need:
var_dump($test->toArray()):

Given the lat/long coordinates, how can we find out the city/country?

For example if we have these set of coordinates
"latitude": 48.858844300000001,
"longitude": 2.2943506,
How can we find out the city/country?

Another option:
Download the cities database from http://download.geonames.org/export/dump/
Add each city as a lat/long -> City mapping to a spatial index such as an R-Tree (some DBs also have the functionality)
Use nearest-neighbour search to find the closest city for any given point
Advantages:
Does not depend on an external server to be available
Very fast (easily does thousands of lookups per second)
Disadvantages:
Not automatically up to date
Requires extra code if you want to distinguish the case where the nearest city is dozens of miles away
May give weird results near the poles and the international date line (though there aren't any cities in those places anyway

The free Google Geocoding API provides this service via a HTTP REST API. Note, the API is usage and rate limited, but you can pay for unlimited access.
Try this link to see an example of the output (this is in json, output is also available in XML)
https://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=true

You need geopy
pip install geopy
and then:
from geopy.geocoders import Nominatim
geolocator = Nominatim()
location = geolocator.reverse("48.8588443, 2.2943506")
print(location.address)
to get more information:
print (location.raw)
{'place_id': '24066644', 'osm_id': '2387784956', 'lat': '41.442115', 'lon': '-8.2939909', 'boundingbox': ['41.442015', '41.442215', '-8.2940909', '-8.2938909'], 'address': {'country': 'Portugal', 'suburb': 'Oliveira do Castelo', 'house_number': '99', 'city_district': 'Oliveira do Castelo', 'country_code': 'pt', 'city': 'Oliveira, São Paio e São Sebastião', 'state': 'Norte', 'state_district': 'Ave', 'pedestrian': 'Rua Doutor Avelino Germano', 'postcode': '4800-443', 'county': 'Guimarães'}, 'osm_type': 'node', 'display_name': '99, Rua Doutor Avelino Germano, Oliveira do Castelo, Oliveira, São Paio e São Sebastião, Guimarães, Braga, Ave, Norte, 4800-443, Portugal', 'licence': 'Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright'}

An Open Source alternative is Nominatim from Open Street Map.
All you have to do is set the variables in an URL and it returns the city/country of that location. Please check the following link for official documentation: Nominatim

I was searching for a similar functionality and I saw the data "http://download.geonames.org/export/dump/" shared on earlier reply (thank you for sharing, it is an excellent source), and implemented a service based on the cities1000.txt data.
You can see it running at
http://scatter-otl.rhcloud.com/location?lat=36&long=-78.9 (broken link)
Just change the latitude and longitude for your locations.
It is deployed on OpenShift (RedHat Platform). First call after a long idle period may take sometime, but usually performance is satisfactory.
Feel free to use this service as you like...
Also, you can find the project source at
https://github.com/turgos/Location.

I've used Geocoder, a good Python library that supports multiple providers, including Google, Geonames, and OpenStreetMaps, to mention just a few. I've tried using the GeoPy library, and it often gets timeouts. Developing your own code for GeoNames is not the best use of your time and you may end up getting unstable code. Geocoder is very simple to use in my experience, and has good enough documentation. Below is some sample code for looking up city by latitude and longitude, or finding latitude/longitude by city name.
import geocoder
g = geocoder.osm([53.5343609, -113.5065084], method='reverse')
print g.json['city'] # Prints Edmonton
g = geocoder.osm('Edmonton, Canada')
print g.json['lat'], g.json['lng'] # Prints 53.5343609, -113.5065084

I know this question is really old, but I have been working on the same issue and I found an extremely efficient and convenient package, reverse_geocoder, built by Ajay Thampi.
The code is available here. It based on a parallelised implementation of K-D trees which is extremely efficient for large amounts of points (it took me few seconds to get 100,000 points.
It is based on this database, already highlighted by #turgos.
If your task is to quickly find the country and city of a list of coordinates, this is a great tool.

I spent about an 30min trying to find a code example of how to do this in Javascript. I couldn't find a quick clear answer to the question you posted. So... I made my own. Hopefully people can use this without having to go digging into the API or staring at code they have no idea how to read. Ha if nothing else I can reference this post for my own stuff.. Nice question and thanks for the forum of discussion!
This is utilizing the Google API.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=<YOURGOOGLEKEY>&sensor=false&v=3&libraries=geometry"></script>
.
//CHECK IF BROWSER HAS HTML5 GEO LOCATION
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function (position) {
//GET USER CURRENT LOCATION
var locCurrent = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
//CHECK IF THE USERS GEOLOCATION IS IN AUSTRALIA
var geocoder = new google.maps.Geocoder();
geocoder.geocode({ 'latLng': locCurrent }, function (results, status) {
var locItemCount = results.length;
var locCountryNameCount = locItemCount - 1;
var locCountryName = results[locCountryNameCount].formatted_address;
if (locCountryName == "Australia") {
//SET COOKIE FOR GIVING
jQuery.cookie('locCountry', locCountryName, { expires: 30, path: '/' });
}
});
}
}

It really depends on what technology restrictions you have.
One way is to have a spatial database with the outline of the countries and cities you are interested in. By outline I mean that countries and cities are store as the spatial type polygon. Your set of coordinates can be converted to the spatial type point and queried against the polygons to get the country/city name where the point is located.
Here are some of the databases which support spatial type: SQL server 2008, MySQL, postGIS - an extension of postgreSQL and Oracle.
If you would like to use a service in stead of having your own database for this you can use Yahoo's GeoPlanet. For the service approach you might want to check out this answer on gis.stackexchange.com, which covers the availability of services for solving your problem.

You can use Google Geocoding API
Bellow is php function that returns Adress, City, State and Country
public function get_location($latitude='', $longitude='')
{
$geolocation = $latitude.','.$longitude;
$request = 'http://maps.googleapis.com/maps/api/geocode/json?latlng='.$geolocation.'&sensor=false';
$file_contents = file_get_contents($request);
$json_decode = json_decode($file_contents);
if(isset($json_decode->results[0])) {
$response = array();
foreach($json_decode->results[0]->address_components as $addressComponet) {
if(in_array('political', $addressComponet->types)) {
$response[] = $addressComponet->long_name;
}
}
if(isset($response[0])){ $first = $response[0]; } else { $first = 'null'; }
if(isset($response[1])){ $second = $response[1]; } else { $second = 'null'; }
if(isset($response[2])){ $third = $response[2]; } else { $third = 'null'; }
if(isset($response[3])){ $fourth = $response[3]; } else { $fourth = 'null'; }
if(isset($response[4])){ $fifth = $response[4]; } else { $fifth = 'null'; }
$loc['address']=''; $loc['city']=''; $loc['state']=''; $loc['country']='';
if( $first != 'null' && $second != 'null' && $third != 'null' && $fourth != 'null' && $fifth != 'null' ) {
$loc['address'] = $first;
$loc['city'] = $second;
$loc['state'] = $fourth;
$loc['country'] = $fifth;
}
else if ( $first != 'null' && $second != 'null' && $third != 'null' && $fourth != 'null' && $fifth == 'null' ) {
$loc['address'] = $first;
$loc['city'] = $second;
$loc['state'] = $third;
$loc['country'] = $fourth;
}
else if ( $first != 'null' && $second != 'null' && $third != 'null' && $fourth == 'null' && $fifth == 'null' ) {
$loc['city'] = $first;
$loc['state'] = $second;
$loc['country'] = $third;
}
else if ( $first != 'null' && $second != 'null' && $third == 'null' && $fourth == 'null' && $fifth == 'null' ) {
$loc['state'] = $first;
$loc['country'] = $second;
}
else if ( $first != 'null' && $second == 'null' && $third == 'null' && $fourth == 'null' && $fifth == 'null' ) {
$loc['country'] = $first;
}
}
return $loc;
}

If you are using Google's Places API, this is how you can get country and city from the place object using Javascript:
function getCityAndCountry(location) {
var components = {};
for(var i = 0; i < location.address_components.length; i++) {
components[location.address_components[i].types[0]] = location.address_components[i].long_name;
}
if(!components['country']) {
console.warn('Couldn\'t extract country');
return false;
}
if(components['locality']) {
return [components['locality'], components['country']];
} else if(components['administrative_area_level_1']) {
return [components['administrative_area_level_1'], components['country']];
} else {
console.warn('Couldn\'t extract city');
return false;
}
}

Loc2country is a Golang based tool that returns the ISO alpha-3 country code for given location coordinates (lat/lon). It responds in microseconds. It uses a geohash to country map.
The geohash data is generated using georaptor.
We use geohash at level 6 for this tool, i.e., boxes of size 1.2km x 600m.

Please check the below answer. It works for me
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position){
initialize(position.coords.latitude,position.coords.longitude);
});
}
function initialize(lat,lng) {
//directionsDisplay = new google.maps.DirectionsRenderer(rendererOptions);
//directionsService = new google.maps.DirectionsService();
var latlng = new google.maps.LatLng(lat, lng);
//alert(latlng);
getLocation(latlng);
}
function getLocation(latlng){
var geocoder = new google.maps.Geocoder();
geocoder.geocode({'latLng': latlng}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (results[0]) {
var loc = getCountry(results);
alert("location is::"+loc);
}
}
});
}
function getCountry(results)
{
for (var i = 0; i < results[0].address_components.length; i++)
{
var shortname = results[0].address_components[i].short_name;
var longname = results[0].address_components[i].long_name;
var type = results[0].address_components[i].types;
if (type.indexOf("country") != -1)
{
if (!isNullOrWhitespace(shortname))
{
return shortname;
}
else
{
return longname;
}
}
}
}
function isNullOrWhitespace(text) {
if (text == null) {
return true;
}
return text.replace(/\s/gi, '').length < 1;
}

Minimize the amount of libraries.
Get a key to use the api at their website and just get the result in a http request:
curl -i -H "key: YOUR_KEY" -X GET https://api.latlong.dev/lookup?lat=38.7447913&long=-9.1625173

Update: My solution was not accurate enough, sometimes it returned incorrect country for coordinates right next to a border, or it would not return any country when the coordinates were at a seashore for example. At the end I went for paid MapBox reverse geocoding API. A request to URL https://api.mapbox.com/geocoding/v5/mapbox.places/<longitude>,<latitude>.json?access_token=<access token> returns geojson with location data - place name, region, country.
Original answer:
Download countries from https://www.naturalearthdata.com/downloads/ (I recommend using 1:10m for better accuracy), generate GeoJSON from it, and use some algorithm to detect if given coordinates are within a country polygon(s).
I used these steps to generate GeoJSON file:
Install Anaconda: https://www.anaconda.com/products/distribution
Install gdal: conda install -c conda-forge gdal (use elevated admin rights, more info on https://anaconda.org/conda-forge/gdal)
Download 1:10m countries form https://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_admin_0_countries.zip, extract it.
Set environment variable: setx PROJ_LIB C:\ProgramData\Anaconda3\Library\share\proj\
Run command C:\ProgramData\Anaconda3\Library\bin\ogr2ogr.exe -f GeoJSON -t_srs crs:84 data.geo.json ne_10m_admin_0_countries.shp
This will generate data.geo.json which has around 24MB. You can alternatively download it here.
C#:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
namespace SmartGuide.Core.Services.CountryLocators
{
public static class CountryLocator
{
private static readonly Lazy<List<CountryPolygons>> _countryPolygonsByCountryName = new(() =>
{
var dataGeoJsonFileName = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "data.geo.json");
var stream = new FileStream(dataGeoJsonFileName, FileMode.Open, FileAccess.Read);
var geoJson = _Deserialize<Root>(stream);
var countryPolygonsByCountryName = geoJson.Features.Select(
feature => new CountryPolygons
{
CountryName = feature.Properties.Name,
Polygons =
feature.Geometry.Type switch
{
"Polygon" => new List<List<GpsCoordinate>>(
new[]
{
feature.Geometry.Coordinates[0]
.Select(x => new GpsCoordinate(
Convert.ToDouble(x[1]),
Convert.ToDouble(x[0])
)
).ToList()
}
),
"MultiPolygon" => feature.Geometry.Coordinates.Select(
polygon => polygon[0].Select(x =>
new GpsCoordinate(
Convert.ToDouble(((JArray) x)[1]),
Convert.ToDouble(((JArray) x)[0])
)
).ToList()
)
.ToList(),
_ => throw new NotImplementedException($"Unknown geometry type {feature.Geometry.Type}")
}
}
).ToList();
return countryPolygonsByCountryName;
});
public static string GetCountryName(GpsCoordinate coordinate)
{
var country = _countryPolygonsByCountryName.Value.FirstOrDefault(country =>
country.Polygons.Any(polygon => _IsPointInPolygon(polygon, coordinate)));
return country?.CountryName;
}
// taken from https://stackoverflow.com/a/7739297/379279
private static bool _IsPointInPolygon(IReadOnlyList<GpsCoordinate> polygon, GpsCoordinate point)
{
int i, j;
bool c = false;
for (i = 0, j = polygon.Count - 1; i < polygon.Count; j = i++)
{
if ((((polygon[i].Latitude <= point.Latitude) && (point.Latitude < polygon[j].Latitude))
|| ((polygon[j].Latitude <= point.Latitude) && (point.Latitude < polygon[i].Latitude)))
&& (point.Longitude < (polygon[j].Longitude - polygon[i].Longitude) * (point.Latitude - polygon[i].Latitude)
/ (polygon[j].Latitude - polygon[i].Latitude) + polygon[i].Longitude))
{
c = !c;
}
}
return c;
}
private class CountryPolygons
{
public string CountryName { get; set; }
public List<List<GpsCoordinate>> Polygons { get; set; }
}
public static TResult _Deserialize<TResult>(Stream stream)
{
var serializer = new JsonSerializer();
using var sr = new StreamReader(stream);
using var jsonTextReader = new JsonTextReader(sr);
return serializer.Deserialize<TResult>(jsonTextReader);
}
public readonly struct GpsCoordinate
{
public GpsCoordinate(
double latitude,
double longitude
)
{
Latitude = latitude;
Longitude = longitude;
}
public double Latitude { get; }
public double Longitude { get; }
}
}
}
// Generated by https://json2csharp.com/ (with Use Pascal Case) from data.geo.json
public class Feature
{
public string Type { get; set; }
public string Id { get; set; }
public Properties Properties { get; set; }
public Geometry Geometry { get; set; }
}
public class Geometry
{
public string Type { get; set; }
public List<List<List<object>>> Coordinates { get; set; }
}
public class Properties
{
public string Name { get; set; }
}
public class Root
{
public string Type { get; set; }
public List<Feature> Features { get; set; }
}
Tests:
[TestFixture]
public class when_locating_country
{
[TestCase(49.2231391, 17.8545076, "Czechia", TestName = "1 Vizovice, Czech Republic")]
[TestCase(2.9263126, -75.2891733, "Colombia", TestName = "2 Neiva, Colombia")]
[TestCase(12, -70, "Venezuela", TestName = "3 Paraguana, Venezuela")]
[TestCase(-5.0721976, 39.0993457, "Tanzania", TestName = "4 Tanga, Tanzania")]
[TestCase(42.9830241, 47.5048716, "Russia", TestName = "5 Makhachkala, Russia")]
public void country_is_located_correctly(double latitude, double longitude, string expectedCountryName)
{
var countryName = CountryLocator.GetCountryName(new CountryLocator.GpsCoordinate(latitude, longitude));
countryName.ShouldBe(expectedCountryName);
}
}
JS: you can use https://github.com/vkurchatkin/which-country and replace the not so accurate https://github.com/vkurchatkin/which-country/blob/master/lib/data.geo.json by the generated one. I didn't test it though.

You can do it with: https://www.weatherapi.com/ its FREE.
My demo is in React and step by step, but you can do it in any way you want, the key is this Weather API, that accepts LON and LAT as a string to produce city and weather info -> https://api.weatherapi.com/v1/forecast.json?key=YOUR_KEY&q=LATITUDE,LONGITUDE&days=1&aqi=no&alerts=n
Note: you will to generate YOUR OWN KEY, by signing up
You will need 3 states for this:
const [latitude, setLatitude] = useState("");
const [longitude, setLongitude] = useState("");
const [city, setCity] = useState("");
First: Request access to 'location' from user (this will have a POP-UP), by using this code and set state to Latitude and Longitude.
useEffect(() => {
function getPosition() {
const successCallback = (position) => {
console.log(position);
setLatitude(position.coords.latitude);
setLongitude(position.coords.longitude);
};
const errorCallback = (error) => {
console.log(error);
};
navigator.geolocation.getCurrentPosition(successCallback, errorCallback);
}
getPosition();
}, []);
Second use https://www.weatherapi.com/ API to get City and other intel, based on Lat and Lon
API looks like this: https://api.weatherapi.com/v1/forecast.json?key=3e5e13fac8354c818de152831211305&q=53.3498053,-6.2603097&days=1&aqi=no&alerts=n
API with explanation: https://api.weatherapi.com/v1/forecast.json?key=3e5e13fac8354c818de152831211305&q=LATITUDE,LONGITUDE&days=1&aqi=no&alerts=n
Now call this API with latitude and longitude to get location data, including city. I am using useEffect as a trigger, so as soon as I get info on Latitude I call the api using axios and set City state to what ever comes out of the api object.
useEffect(() => {
async function getWeather() {
let res = await axios.get(
`https://api.weatherapi.com/v1/forecast.json?key=3e5e13fac8354c818de152831211305&q=${latitude},${longitude}&days=1&aqi=no&alerts=no`
);
console.log(res.data);
setCity(res.data.location.name);
}
getWeather();
}, [latitude, longitude]);
RESULT from API:
"location": {
"name": "Dublin",
"region": "Dublin",
"country": "Ireland",
"lat": 53.35,
"lon": -6.26,
"tz_id": "Europe/Dublin",
"localtime_epoch": 1673737376,
"localtime": "2023-01-14 23:02"
},
Here is video to my youtube channel, where you can see a demo of this: https://youtu.be/gxcG8V3Fpbk

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