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Reuse these data in your code

Query, endpoint and code for reusing the same data
http://landregistry.data.gov.uk/landregistry/query
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date > "2008-12-31"^^xsd:date &&
    ?date < "2009-03-01"^^xsd:date
  )
}
Howto write a query SPARQL? (in French)
{{#sparql:prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date > "2008-12-31"^^xsd:date &&
    ?date < "2009-03-01"^^xsd:date
  )
}
| endpoint = http://landregistry.data.gov.uk/landregistry/query
| chart=bordercloud.visualization.DataTable
| options=
| log=2
}}
Howto install LinkedWiki in my wiki? 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/3.4.1/jquery.min.js"  async></script>
    </head>
    <body onload="testQuery();">
        <script>
function testQuery(){
    var endpoint = "http://landregistry.data.gov.uk/landregistry/query";
    var query = "prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n\
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n\
prefix owl: <http://www.w3.org/2002/07/owl#>\n\
prefix xsd: <http://www.w3.org/2001/XMLSchema#>\n\
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>\n\
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>\n\
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>\n\
prefix skos: <http://www.w3.org/2004/02/skos/core#>\n\
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>\n\
\n\
SELECT ?region ?date ?hpi\n\
{\n\
  ?region ukhpi:refPeriodStart ?date ;\n\
          ukhpi:housePriceIndex ?hpi\n\
  FILTER (\n\
    ?date > \"2008-12-31\"^^xsd:date &&\n\
    ?date < \"2009-03-01\"^^xsd:date\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>
     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.9.0/css/all.min.css">

     <script
            src="https://code.jquery.com/jquery-3.4.1.min.js"
            integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
            crossorigin="anonymous"> </script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"> </script>
     <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"> </script>

     <script type="text/javascript" src="https://bordercloud.github.io/sgvizler2/sgvizler2/sgvizler2.js" defer> </script>
     <script type="text/javascript" src="http://linkedwiki.com/js/initExampleHTML.js"  defer > </script>
    </head>
<body style="margin:0;">
<div id="sgvzl_example_query"
   data-sgvizler-endpoint="http://landregistry.data.gov.uk/landregistry/query"
   data-sgvizler-query="prefix rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;
prefix rdfs: &lt;http://www.w3.org/2000/01/rdf-schema#&gt;
prefix owl: &lt;http://www.w3.org/2002/07/owl#&gt;
prefix xsd: &lt;http://www.w3.org/2001/XMLSchema#&gt;
prefix sr: &lt;http://data.ordnancesurvey.co.uk/ontology/spatialrelations/&gt;
prefix ukhpi: &lt;http://landregistry.data.gov.uk/def/ukhpi/&gt;
prefix lrppi: &lt;http://landregistry.data.gov.uk/def/ppi/&gt;
prefix skos: &lt;http://www.w3.org/2004/02/skos/core#&gt;
prefix lrcommon: &lt;http://landregistry.data.gov.uk/def/common/&gt;

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date &gt; &quot;2008-12-31&quot;^^xsd:date &amp;&amp;
    ?date &lt; &quot;2009-03-01&quot;^^xsd:date
  )
}"
    data-sgvizler-chart='bordercloud.visualization.DataTable'
    data-sgvizler-chart-options=''
    data-sgvizler-endpoint_output_format='json'
    data-sgvizler-log='2'
    style='width:100%; height:auto;'  />

<script>
/*$(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("http://landregistry.data.gov.uk/landregistry/query")
sparql.setQuery("""
    prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date > "2008-12-31"^^xsd:date &&
    ?date < "2009-03-01"^^xsd:date
  )
}""")
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 <- "http://landregistry.data.gov.uk/landregistry/query"
# create query statement
    query <- "prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date > "2008-12-31"^^xsd:date &&
    ?date < "2009-03-01"^^xsd:date
  )
}"
# 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 = "http://landregistry.data.gov.uk/landregistry/query"
sparql = <<-EOT
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date > "2008-12-31"^^xsd:date &&
    ?date < "2009-03-01"^^xsd:date
  )
}
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 = 'http://landregistry.data.gov.uk/landregistry/query';

query = ['prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> '...
'prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> '...
'prefix owl: <http://www.w3.org/2002/07/owl#> '...
'prefix xsd: <http://www.w3.org/2001/XMLSchema#> '...
'prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/> '...
'prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/> '...
'prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/> '...
'prefix skos: <http://www.w3.org/2004/02/skos/core#> '...
'prefix lrcommon: <http://landregistry.data.gov.uk/def/common/> '...
' '...
'SELECT ?region ?date ?hpi '...
'{ '...
'  ?region ukhpi:refPeriodStart ?date ; '...
'          ukhpi:housePriceIndex ?hpi '...
'  FILTER ( '...
'    ?date > "2008-12-31"^^xsd:date && '...
'    ?date < "2009-03-01"^^xsd:date '...
'  ) '...
'} '];

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 ="http://landregistry.data.gov.uk/landregistry/query";
$sp_readonly = new SparqlClient();
$sp_readonly->setEndpointRead($endpoint);
$q = <<<EOD
prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>
prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>
prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/>
prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/>
prefix skos: <http://www.w3.org/2004/02/skos/core#>
prefix lrcommon: <http://landregistry.data.gov.uk/def/common/>

SELECT ?region ?date ?hpi
{
  ?region ukhpi:refPeriodStart ?date ;
          ukhpi:housePriceIndex ?hpi
  FILTER (
    ?date > "2008-12-31"^^xsd:date &&
    ?date < "2009-03-01"^^xsd:date
  )
}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("http://landregistry.data.gov.uk/landregistry/query";, false);

            String querySelect = 'prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> \n'
                    + 'prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> \n'
                    + 'prefix owl: <http://www.w3.org/2002/07/owl#> \n'
                    + 'prefix xsd: <http://www.w3.org/2001/XMLSchema#> \n'
                    + 'prefix sr: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/> \n'
                    + 'prefix ukhpi: <http://landregistry.data.gov.uk/def/ukhpi/> \n'
                    + 'prefix lrppi: <http://landregistry.data.gov.uk/def/ppi/> \n'
                    + 'prefix skos: <http://www.w3.org/2004/02/skos/core#> \n'
                    + 'prefix lrcommon: <http://landregistry.data.gov.uk/def/common/> \n'
                    + ' \n'
                    + 'SELECT ?region ?date ?hpi \n'
                    + '{ \n'
                    + '  ?region ukhpi:refPeriodStart ?date ; \n'
                    + '          ukhpi:housePriceIndex ?hpi \n'
                    + '  FILTER ( \n'
                    + '    ?date > "2008-12-31"^^xsd:date && \n'
                    + '    ?date < "2009-03-01"^^xsd:date \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
Very soon !
TODO