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Creating synergies and interactions among the analysts and the “producers” of data. See details.

List of power stations in the world
Map of power station in the world.

Reuse these data in your code

Query, endpoint and code for reusing the same data
https://query.wikidata.org/sparql
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/>  
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

PREFIX psv: <http://www.wikidata.org/prop/statement/value/>

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language "en" .
      } .
  
} 
Howto write a query SPARQL? (in french)
{{#sparql:PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/>  
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

PREFIX psv: <http://www.wikidata.org/prop/statement/value/>

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language "en" .
      } .
  
} 
| endpoint = https://query.wikidata.org/sparql }}
Howto insert this graph in my wiki ?
Test this script in a new tab.
<html>
    <head>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
    </head>
    <body onload="testQuery();">
        <script>
function testQuery(){
    var endpoint = "https://query.wikidata.org/sparql";
    var query = "PREFIX schema: <http://schema.org/> \n\
PREFIX p: <http://www.wikidata.org/prop/> \n\
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> \n\
PREFIX bd: <http://www.bigdata.com/rdf#> \n\
PREFIX wikibase: <http://wikiba.se/ontology#> \n\
PREFIX wd: <http://www.wikidata.org/entity/>  \n\
PREFIX wdt: <http://www.wikidata.org/prop/direct/> \n\
\n\
PREFIX psv: <http://www.wikidata.org/prop/statement/value/>\n\
\n\
select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel \n\
where {\n\
 ?object wdt:P31/wdt:P279* wd:Q159719 .\n\
            ?object  rdfs:label ?label ;                                \n\
                    p:P625 ?coord ;\n\
                    schema:description ?description .\n\
\n\
          ?coord   psv:P625 ?coordValue .\n\
       \n\
          ?coordValue a wikibase:GlobecoordinateValue ;\n\
                        wikibase:geoLatitude ?lat ;\n\
                        wikibase:geoLongitude ?long .   \n\
       SERVICE wikibase:label {\n\
        bd:serviceParam wikibase:language \"en\" .\n\
      } .\n\
  \n\
}"

   // $('#bodyContentResearch').append(queryDataset);
    $.ajax({
                url: endpoint,
                dataType: 'json',
                data: {
                    queryLn: 'SPARQL',
                    query: query ,
                    limit: 'none',
                    infer: 'true',
                    Accept: 'application/sparql-results+json'
                },
                success: displayResult,
                error: displayError
        });
}

function displayError(xhr, textStatus, errorThrown) {
    console.log(textStatus);
    console.log(errorThrown);
}

function displayResult(data) {
    $.each(data.results.bindings, function(index, bs) {
        console.log(bs);
        $("body").append(JSON.stringify(bs) + "<hr/>");
    });
}

        </script>
    </body>
</html>
Test this script in a new tab (Careful, several charts need a API key).
Howto insert this graph in my html page?
<html>
    <head>
        <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
        <script type="text/javascript" src="https://www.google.com/jsapi"></script>
        <script type="text/javascript" src="https://bordercloud.github.io/sgvizler2/sgvizler2/sgvizler2.js"></script>
    </head>
<body style="margin:0;">
<div id="sgvzl_example_query"
   data-sgvizler-endpoint="https://query.wikidata.org/sparql"
   data-sgvizler-query="PREFIX schema: &lt;http://schema.org/&gt; 
PREFIX p: &lt;http://www.wikidata.org/prop/&gt; 
PREFIX rdfs: &lt;http://www.w3.org/2000/01/rdf-schema#&gt; 
PREFIX bd: &lt;http://www.bigdata.com/rdf#&gt; 
PREFIX wikibase: &lt;http://wikiba.se/ontology#&gt; 
PREFIX wd: &lt;http://www.wikidata.org/entity/&gt;  
PREFIX wdt: &lt;http://www.wikidata.org/prop/direct/&gt; 

PREFIX psv: &lt;http://www.wikidata.org/prop/statement/value/&gt;

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language &quot;en&quot; .
      } .
  
} "
    data-sgvizler-chart='leaflet.visualization.Map'
    data-sgvizler-chart-options=''
    data-sgvizler-endpoint_output_format='json'
    data-sgvizler-log='2'
    style='width:100%; height:600px;'  />



<script>
$(document).ready(function() {
   sgvizler2.containerDrawAll({
       // Google Api key
       googleApiKey : "GOOGLE_MAP_API_KEY",
       // OpenStreetMap Access Token
       //  https://www.mapbox.com/api-documentation/#access-tokens
       osmAccessToken : "OSM_MAP_API_KEY"
     });

});
</script>

</body>
</html>
from SPARQLWrapper import SPARQLWrapper, JSON

sparql = SPARQLWrapper("https://query.wikidata.org/sparql")
sparql.setQuery("""
    PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/>  
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

PREFIX psv: <http://www.wikidata.org/prop/statement/value/>

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language "en" .
      } .
  
} """)
sparql.setReturnFormat(JSON)
results = sparql.query().convert()

for result in results["results"]["bindings"]:
    print(result)
    #print(result["label"]["value"])
Howto use SPARQL with Python ?
library(SPARQL) # SPARQL querying package
library(ggplot2)

# Step 1 - Set up preliminaries and define query
# Define the data.gov endpoint
endpoint <- "https://query.wikidata.org/sparql"
# create query statement
query <- "PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/>  
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

PREFIX psv: <http://www.wikidata.org/prop/statement/value/>

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language "en" .
      } .
  
} "
# Step 2 - Use SPARQL package to submit query and save results to a data frame
qd <- SPARQL(endpoint,query)
df <- qd$results
SPARQL with R in less than 5 minutes
#!/usr/bin/env ruby
#
# Install sparql for Ruby
#   gem update --system
#   gem install sparql
#
require 'sparql/client'

endpoint = "https://query.wikidata.org/sparql"
sparql = <<-EOT
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/>  
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

PREFIX psv: <http://www.wikidata.org/prop/statement/value/>

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language "en" .
      } .
  
} 
EOT

#For Wikidata, the method get is required
#For other SPARQL endpoints, the method post is prefered
client = SPARQL::Client.new(endpoint, :method => :get)
rows = client.query(sparql)

puts "Number of rows: #{rows.size}"
for row in rows
  for key,val in row do
    # print "#{key.to_s.ljust(10)}: #{val}\t"
    print "#{key}: #{val}\t"
  end
  print "\n"
end
Doc Ruby for SPARQL 1.1
endpoint = 'https://query.wikidata.org/sparql';

query = ['PREFIX schema: <http://schema.org/>  '...
'PREFIX p: <http://www.wikidata.org/prop/>  '...
'PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>  '...
'PREFIX bd: <http://www.bigdata.com/rdf#>  '...
'PREFIX wikibase: <http://wikiba.se/ontology#>  '...
'PREFIX wd: <http://www.wikidata.org/entity/>   '...
'PREFIX wdt: <http://www.wikidata.org/prop/direct/>  '...
' '...
'PREFIX psv: <http://www.wikidata.org/prop/statement/value/> '...
' '...
'select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel  '...
'where { '...
' ?object wdt:P31/wdt:P279* wd:Q159719 . '...
'            ?object  rdfs:label ?label ;                                 '...
'                    p:P625 ?coord ; '...
'                    schema:description ?description . '...
' '...
'          ?coord   psv:P625 ?coordValue . '...
'        '...
'          ?coordValue a wikibase:GlobecoordinateValue ; '...
'                        wikibase:geoLatitude ?lat ; '...
'                        wikibase:geoLongitude ?long .    '...
'       SERVICE wikibase:label { '...
'        bd:serviceParam wikibase:language "en" . '...
'      } . '...
'   '...
'}  '];

url_head = strcat(endpoint,'?query=');
url_query = urlencode(query);
format = 'text/tab-separated-values';
url_tail = strcat('&format=', format);

url = strcat(url_head, url_query, url_tail);

% get the data from the endpoint
query_results = urlread(url);

% write the data to a file so that tdfread can parse it
fid = fopen('query_results.txt','w');
if fid>=0
    fprintf(fid, '%s\n', query_results)
    fclose(fid)
end

% this reads the tsv file into a struct
sparql_data = tdfread('query_results.txt')
Project Github MatlabSPARQL
<?php
require __DIR__ . '/../vendor/autoload.php';
use BorderCloud\SPARQL\SparqlClient;

$endpoint ="https://query.wikidata.org/sparql";
$sp_readonly = new SparqlClient();
$sp_readonly->setEndpointRead($endpoint);
$q = <<<EOD
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX wd: <http://www.wikidata.org/entity/>  
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

PREFIX psv: <http://www.wikidata.org/prop/statement/value/>

select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel 
where {
 ?object wdt:P31/wdt:P279* wd:Q159719 .
            ?object  rdfs:label ?label ;                                
                    p:P625 ?coord ;
                    schema:description ?description .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .   
       SERVICE wikibase:label {
        bd:serviceParam wikibase:language "en" .
      } .
  
} EOD;
$rows = $sp_readonly->query($q, 'rows');
$err = $sp_readonly->getErrors();
if ($err) {
      print_r($err);
      throw new Exception(print_r($err,true));
}

foreach($rows["result"]["variables"] as $variable){
        printf("%-20.20s",$variable);
        echo '|';
 }
 echo "\n";

foreach ($rows["result"]["rows"] as $row){
        foreach($rows["result"]["variables"] as $variable){
                printf("%-20.20s",$row[$variable]);
        echo '|';
        }
        echo "\n";
 }
 ?>
Project Github BorderCloud/SPARQL
import com.bordercloud.sparql.Endpoint;
import java.util.ArrayList;
import java.util.HashMap;

public class Main {

    public static void main(String[] args) {
        try {
            Endpoint sp = new Endpoint("https://query.wikidata.org/sparql";, false);

            String querySelect = 'PREFIX schema: <http://schema.org/>  \n'
                    + 'PREFIX p: <http://www.wikidata.org/prop/>  \n'
                    + 'PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>  \n'
                    + 'PREFIX bd: <http://www.bigdata.com/rdf#>  \n'
                    + 'PREFIX wikibase: <http://wikiba.se/ontology#>  \n'
                    + 'PREFIX wd: <http://www.wikidata.org/entity/>   \n'
                    + 'PREFIX wdt: <http://www.wikidata.org/prop/direct/>  \n'
                    + ' \n'
                    + 'PREFIX psv: <http://www.wikidata.org/prop/statement/value/> \n'
                    + ' \n'
                    + 'select  DISTINCT  ?lat ?long ?objectLabel ?descriptionLabel  \n'
                    + 'where { \n'
                    + ' ?object wdt:P31/wdt:P279* wd:Q159719 . \n'
                    + '            ?object  rdfs:label ?label ;                                 \n'
                    + '                    p:P625 ?coord ; \n'
                    + '                    schema:description ?description . \n'
                    + ' \n'
                    + '          ?coord   psv:P625 ?coordValue . \n'
                    + '        \n'
                    + '          ?coordValue a wikibase:GlobecoordinateValue ; \n'
                    + '                        wikibase:geoLatitude ?lat ; \n'
                    + '                        wikibase:geoLongitude ?long .    \n'
                    + '       SERVICE wikibase:label { \n'
                    + '        bd:serviceParam wikibase:language "en" . \n'
                    + '      } . \n'
                    + '   \n'
                    + '}  \n';

            HashMap rs = sp.query(querySelect);
            printResult(rs,30);

        }catch(EndpointException eex) {
            System.out.println(eex);
            eex.printStackTrace();
        }
    }

    public static void printResult(HashMap rs , int size) {

      for (String variable : (ArrayList) rs.get("result").get("variables")) {
        System.out.print(String.format("%-"+size+"."+size+"s", variable ) + " | ");
      }
      System.out.print("\n");
      for (HashMap value : (ArrayList>) rs.get("result").get("rows")) {
        //System.out.print(value);
        /* for (String key : value.keySet()) {
         System.out.println(value.get(key));
         }*/
        for (String variable : (ArrayList) rs.get("result").get("variables")) {
          //System.out.println(value.get(variable));
          System.out.print(String.format("%-"+size+"."+size+"s", value.get(variable)) + " | ");
        }
        System.out.print("\n");
      }
    }
}
Project Github BorderCloud/SPARQL-JAVA