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

List of cities in Italy
List of cities in Italy in function of the area.

Reuse these data in your code

Query, endpoint and code for reusing the same data
https://query.wikidata.org/sparql
PREFIX psv: <http://www.wikidata.org/prop/statement/value/> 
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX wd: <http://www.wikidata.org/entity/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km²
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km²
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language "en,it" .
}

}  ORDER BY DESC(?size)
Howto write a query SPARQL? (in french)
{{#sparql:PREFIX psv: <http://www.wikidata.org/prop/statement/value/> 
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX wd: <http://www.wikidata.org/entity/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km²
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km²
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language "en,it" .
}

}  ORDER BY DESC(?size)
| 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 psv: <http://www.wikidata.org/prop/statement/value/> \n\
PREFIX schema: <http://schema.org/> \n\
PREFIX p: <http://www.wikidata.org/prop/> \n\
PREFIX bd: <http://www.bigdata.com/rdf#> \n\
PREFIX wikibase: <http://wikiba.se/ontology#> \n\
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> \n\
PREFIX wd: <http://www.wikidata.org/entity/> \n\
PREFIX wdt: <http://www.wikidata.org/prop/direct/> \n\
\n\
select ?lat ?long ?size ?cityLabel\n\
where {\n\
        ?city wdt:P31/wdt:P279* wd:Q515 ;\n\
               wdt:P17 wd:Q38 ;\n\
               p:P2046 ?sizeS ;\n\
  			   p:P625 ?coord .\n\
\n\
          ?coord   psv:P625 ?coordValue .\n\
       \n\
          ?coordValue a wikibase:GlobecoordinateValue ;\n\
                        wikibase:geoLatitude ?lat ;\n\
                        wikibase:geoLongitude ?long .  \n\
  \n\
  #Convert to km²\n\
	?sizeS ?sp ?sv .\n\
   ?sv rdf:type wikibase:QuantityValue .\n\
   { \n\
     ?sv wikibase:quantityAmount ?km .\n\
     ?sv wikibase:quantityUnit wd:Q712226 . # km²\n\
     BIND(ROUND((?km)) AS ?size)\n\
   } UNION {\n\
     ?sv wikibase:quantityAmount ?ha.\n\
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare\n\
     BIND(ROUND((?ha *0.01)) AS ?size)\n\
   } UNION {\n\
     ?sv wikibase:quantityAmount ?sqmi.\n\
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré\n\
     BIND(ROUND((?sqmi *2.58999)) AS ?size)\n\
   } UNION {\n\
     ?sv wikibase:quantityAmount ?ac.\n\
     ?sv wikibase:quantityUnit wd:Q81292 . # acre\n\
     BIND(ROUND((?ac *0.00404686)) AS ?size)\n\
   }\n\
  \n\
SERVICE wikibase:label {\n\
     bd:serviceParam wikibase:language \"en,it\" .\n\
}\n\
\n\
}  ORDER BY DESC(?size)"

   // $('#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 psv: &lt;http://www.wikidata.org/prop/statement/value/&gt; 
PREFIX schema: &lt;http://schema.org/&gt; 
PREFIX p: &lt;http://www.wikidata.org/prop/&gt; 
PREFIX bd: &lt;http://www.bigdata.com/rdf#&gt; 
PREFIX wikibase: &lt;http://wikiba.se/ontology#&gt; 
PREFIX rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt; 
PREFIX wd: &lt;http://www.wikidata.org/entity/&gt; 
PREFIX wdt: &lt;http://www.wikidata.org/prop/direct/&gt; 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km&sup2;
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km&sup2;
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carr&eacute;
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language &quot;en,it&quot; .
}

}  ORDER BY DESC(?size)"
    data-sgvizler-chart='google.visualization.GeoMap'
    data-sgvizler-chart-options='region=IT'
    data-sgvizler-endpoint_output_format='json'
    data-sgvizler-log='2'
    style='width:100%; height:450px;'  />



<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 psv: <http://www.wikidata.org/prop/statement/value/> 
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX wd: <http://www.wikidata.org/entity/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km²
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km²
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language "en,it" .
}

}  ORDER BY DESC(?size)""")
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 psv: <http://www.wikidata.org/prop/statement/value/> 
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX wd: <http://www.wikidata.org/entity/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km²
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km²
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language "en,it" .
}

}  ORDER BY DESC(?size)"
# 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 psv: <http://www.wikidata.org/prop/statement/value/> 
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX wd: <http://www.wikidata.org/entity/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km²
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km²
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language "en,it" .
}

}  ORDER BY DESC(?size)
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 psv: <http://www.wikidata.org/prop/statement/value/>  '...
'PREFIX schema: <http://schema.org/>  '...
'PREFIX p: <http://www.wikidata.org/prop/>  '...
'PREFIX bd: <http://www.bigdata.com/rdf#>  '...
'PREFIX wikibase: <http://wikiba.se/ontology#>  '...
'PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>  '...
'PREFIX wd: <http://www.wikidata.org/entity/>  '...
'PREFIX wdt: <http://www.wikidata.org/prop/direct/>  '...
' '...
'select ?lat ?long ?size ?cityLabel '...
'where { '...
'        ?city wdt:P31/wdt:P279* wd:Q515 ; '...
'               wdt:P17 wd:Q38 ; '...
'               p:P2046 ?sizeS ; '...
'  			   p:P625 ?coord . '...
' '...
'          ?coord   psv:P625 ?coordValue . '...
'        '...
'          ?coordValue a wikibase:GlobecoordinateValue ; '...
'                        wikibase:geoLatitude ?lat ; '...
'                        wikibase:geoLongitude ?long .   '...
'   '...
'  #Convert to km² '...
'	?sizeS ?sp ?sv . '...
'   ?sv rdf:type wikibase:QuantityValue . '...
'   {  '...
'     ?sv wikibase:quantityAmount ?km . '...
'     ?sv wikibase:quantityUnit wd:Q712226 . # km² '...
'     BIND(ROUND((?km)) AS ?size) '...
'   } UNION { '...
'     ?sv wikibase:quantityAmount ?ha. '...
'     ?sv wikibase:quantityUnit wd:Q35852 . # hectare '...
'     BIND(ROUND((?ha *0.01)) AS ?size) '...
'   } UNION { '...
'     ?sv wikibase:quantityAmount ?sqmi. '...
'     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré '...
'     BIND(ROUND((?sqmi *2.58999)) AS ?size) '...
'   } UNION { '...
'     ?sv wikibase:quantityAmount ?ac. '...
'     ?sv wikibase:quantityUnit wd:Q81292 . # acre '...
'     BIND(ROUND((?ac *0.00404686)) AS ?size) '...
'   } '...
'   '...
'SERVICE wikibase:label { '...
'     bd:serviceParam wikibase:language "en,it" . '...
'} '...
' '...
'}  ORDER BY DESC(?size) '];

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 psv: <http://www.wikidata.org/prop/statement/value/> 
PREFIX schema: <http://schema.org/> 
PREFIX p: <http://www.wikidata.org/prop/> 
PREFIX bd: <http://www.bigdata.com/rdf#> 
PREFIX wikibase: <http://wikiba.se/ontology#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX wd: <http://www.wikidata.org/entity/> 
PREFIX wdt: <http://www.wikidata.org/prop/direct/> 

select ?lat ?long ?size ?cityLabel
where {
        ?city wdt:P31/wdt:P279* wd:Q515 ;
               wdt:P17 wd:Q38 ;
               p:P2046 ?sizeS ;
  			   p:P625 ?coord .

          ?coord   psv:P625 ?coordValue .
       
          ?coordValue a wikibase:GlobecoordinateValue ;
                        wikibase:geoLatitude ?lat ;
                        wikibase:geoLongitude ?long .  
  
  #Convert to km²
	?sizeS ?sp ?sv .
   ?sv rdf:type wikibase:QuantityValue .
   { 
     ?sv wikibase:quantityAmount ?km .
     ?sv wikibase:quantityUnit wd:Q712226 . # km²
     BIND(ROUND((?km)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ha.
     ?sv wikibase:quantityUnit wd:Q35852 . # hectare
     BIND(ROUND((?ha *0.01)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?sqmi.
     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré
     BIND(ROUND((?sqmi *2.58999)) AS ?size)
   } UNION {
     ?sv wikibase:quantityAmount ?ac.
     ?sv wikibase:quantityUnit wd:Q81292 . # acre
     BIND(ROUND((?ac *0.00404686)) AS ?size)
   }
  
SERVICE wikibase:label {
     bd:serviceParam wikibase:language "en,it" .
}

}  ORDER BY DESC(?size)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 psv: <http://www.wikidata.org/prop/statement/value/>  \n'
                    + 'PREFIX schema: <http://schema.org/>  \n'
                    + 'PREFIX p: <http://www.wikidata.org/prop/>  \n'
                    + 'PREFIX bd: <http://www.bigdata.com/rdf#>  \n'
                    + 'PREFIX wikibase: <http://wikiba.se/ontology#>  \n'
                    + 'PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>  \n'
                    + 'PREFIX wd: <http://www.wikidata.org/entity/>  \n'
                    + 'PREFIX wdt: <http://www.wikidata.org/prop/direct/>  \n'
                    + ' \n'
                    + 'select ?lat ?long ?size ?cityLabel \n'
                    + 'where { \n'
                    + '        ?city wdt:P31/wdt:P279* wd:Q515 ; \n'
                    + '               wdt:P17 wd:Q38 ; \n'
                    + '               p:P2046 ?sizeS ; \n'
                    + '  			   p:P625 ?coord . \n'
                    + ' \n'
                    + '          ?coord   psv:P625 ?coordValue . \n'
                    + '        \n'
                    + '          ?coordValue a wikibase:GlobecoordinateValue ; \n'
                    + '                        wikibase:geoLatitude ?lat ; \n'
                    + '                        wikibase:geoLongitude ?long .   \n'
                    + '   \n'
                    + '  #Convert to km² \n'
                    + '	?sizeS ?sp ?sv . \n'
                    + '   ?sv rdf:type wikibase:QuantityValue . \n'
                    + '   {  \n'
                    + '     ?sv wikibase:quantityAmount ?km . \n'
                    + '     ?sv wikibase:quantityUnit wd:Q712226 . # km² \n'
                    + '     BIND(ROUND((?km)) AS ?size) \n'
                    + '   } UNION { \n'
                    + '     ?sv wikibase:quantityAmount ?ha. \n'
                    + '     ?sv wikibase:quantityUnit wd:Q35852 . # hectare \n'
                    + '     BIND(ROUND((?ha *0.01)) AS ?size) \n'
                    + '   } UNION { \n'
                    + '     ?sv wikibase:quantityAmount ?sqmi. \n'
                    + '     ?sv wikibase:quantityUnit wd:Q232291 . # mille carré \n'
                    + '     BIND(ROUND((?sqmi *2.58999)) AS ?size) \n'
                    + '   } UNION { \n'
                    + '     ?sv wikibase:quantityAmount ?ac. \n'
                    + '     ?sv wikibase:quantityUnit wd:Q81292 . # acre \n'
                    + '     BIND(ROUND((?ac *0.00404686)) AS ?size) \n'
                    + '   } \n'
                    + '   \n'
                    + 'SERVICE wikibase:label { \n'
                    + '     bd:serviceParam wikibase:language "en,it" . \n'
                    + '} \n'
                    + ' \n'
                    + '}  ORDER BY DESC(?size) \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