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Simplify dcat:spatialResolution by fixing the scale to metres

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dr-shorthair committed Feb 24, 2019
1 parent fe35654 commit 21d7ade55e89d12b85b5f64e7f4787f44760d722
Showing with 55 additions and 36 deletions.
  1. +28 −9 dcat/index.html
  2. +27 −27 dcat/rdf/dcat.ttl
@@ -360,6 +360,25 @@ <h3>Basic Example</h3>
<p>The catalog lists each of its datasets via the <code>dcat:dataset</code> property. In the example above, an example dataset was mentioned with the relative URI&nbsp;<code>:dataset-001</code>. A possible description of it using DCAT is shown below:
</p>
<pre id="ex-dataset" class="example nohighlight turtle" aria-busy="false" aria-live="polite">
:dataset-001
a dcat:Dataset&nbsp;;
dct:title "Imaginary dataset"&nbsp;;
dcat:keyword "accountability","transparency" ,"payments"&nbsp;;
dct:creator&nbsp;:finance-employee-001&nbsp;;
dct:issued "2011-12-05"^^xsd:date&nbsp;;
dct:modified "2011-12-05"^^xsd:date&nbsp;;
dcat:contactPoint &lt;http://example.org/transparency-office/contact&gt; ;
dct:temporal &lt;http://reference.data.gov.uk/id/quarter/2006-Q1&gt; ;
dct:spatial &lt;http://www.geonames.org/6695072&gt; ;
dcat:spatialResolutionM "30.0"^^sxd:decimal ;
dct:publisher&nbsp;:finance-ministry&nbsp;;
dct:language &lt;http://id.loc.gov/vocabulary/iso639-1/en&gt; &nbsp;;
dct:accrualPeriodicity &lt;http://purl.org/linked-data/sdmx/2009/code#freq-W&gt; &nbsp;;
dcat:distribution&nbsp;:dataset-001-csv&nbsp;;
.
</pre>
<!--
<pre id="ex-dataset" class="example nohighlight turtle" aria-busy="false" aria-live="polite">
:dataset-001
a dcat:Dataset&nbsp;;
dct:title "Imaginary dataset"&nbsp;;
@@ -381,7 +400,7 @@ <h3>Basic Example</h3>
dcat:distribution&nbsp;:dataset-001-csv&nbsp;;
.
</pre>

-->
<p>In order to express the frequency of update in the example above, we chose to use an instance from the <a href="http://www.w3.org/TR/vocab-data-cube/#dsd-cog">Content-Oriented Guidelines</a> developed as part
of the <abbr title="World Wide Web Consortium">W3C</abbr> Data Cube Vocabulary [[?VOCAB-DATA-CUBE]] efforts. Additionally, we chose to describe the spatial and temporal coverage of the example dataset using URIs from <a href="http://www.geonames.org/">Geonames</a> and the Interval dataset (originally available from http://reference.data.gov.uk/id/interval) from data.gov.uk, respectively, and the temporal resolution using a standard datatype. A contact point is also provided where comments and feedback about the dataset can be sent. Further details about the contact point, such as email address or telephone number, can be provided using vCard [[?VCARD-RDF]].</p>

@@ -678,7 +697,7 @@ <h3>Class: Catalog</h3>
<a href="#Property:dataset_distribution">distribution</a>,
<a href="#Property:dataset_frequency">frequency</a>,
<a href="#Property:dataset_spatial">spatial/geographic coverage</a>,
<a href="#Property:dataset_spatialresolution">spatial resolution</a>,
<a href="#Property:dataset_spatialresolutionM">spatial resolution</a>,
<a href="#Property:dataset_temporal">temporal coverage</a>,
<a href="#Property:dataset_wasgeneratedby">was generated by</a>
</p>
@@ -1441,7 +1460,7 @@ <h3>Class: Dataset</h3>
<a href="#Property:dataset_distribution">distribution</a>,
<a href="#Property:dataset_frequency">frequency</a>,
<a href="#Property:dataset_spatial">spatial/geographic coverage</a>,
<a href="#Property:dataset_spatialresolution">spatial resolution</a>,
<a href="#Property:dataset_spatialresolutionm">spatial resolution</a>,
<a href="#Property:dataset_temporal">temporal coverage</a>,
<a href="#Property:dataset_wasgeneratedby">was generated by</a>
</p>
@@ -1603,19 +1622,19 @@ <h4>Property: temporal coverage</h4>
</table>
</section>

<section id="Property:dataset_spatialresolution">
<section id="Property:dataset_spatialresolutionm">
<h4>Property: spatial resolution</h4>

<table class="definition">
<thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#spatialResolution">dct:spatialResolution</a></th></tr></thead>
<thead><tr><th>RDF Property:</th><th><a href="http://www.w3.org/ns/dcat#spatialResolutionM">dct:spatialResolutionM</a></th></tr></thead>
<tbody>
<tr><td class="prop">Definition:</td><td>minimum spatial separation resolvable in a dataset</td></tr>
<tr><td class="prop">Range:</td><td><a href="https://www.w3.org/TR/rdf-schema/#ch_resource"><code>rdfs:Resource</code></a></td></tr>
<tr><td class="prop">Definition:</td><td>minimum spatial separation resolvable in a dataset, measured in metres</td></tr>
<tr><td class="prop">Range:</td><td><a href="https://www.w3.org/TR/xmlschema11-2/#decimal"><code>xsd:decimal</code></a></td></tr>
<tr><td class="prop">Usage note:</td><td>If the dataset is an image or grid this should correspond to the spacing of items. For other kinds of spatial dataset, this property will usually indicate the smallest distance between items in the dataset.</td></tr>
</tbody>
</table>

<p>The range of this property is a scaled quantity value representing a distance. Its representation is currently unconstrained. A structured types such as <a href="http://www.qudt.org/qudt/owl/1.0.0/qudt/index.html#QuantityValue">qudt:QuantityValue</a> or <a href="#Class:Measure"></a> is recommended. </p>
<p>The range of this property is a decimal number representing a length in metres. </p>

<p class="note">
New property in this context in this revision of DCAT.
@@ -4141,7 +4160,7 @@ <h3>Changes since the W3C Recommendation of 16 January 2014</h3>

<ul>
<li>
A new property <a href="#Property:dataset_spatialresolution">dcat:spatialResolution</a> added to support description of the spatial resolution of datasets and distributions. A new class <a href="#Class:measure">dcat:Measure</a> is provided for its value. See <a href="https://github.com/w3c/dxwg/issues/84">Issue #84</a>
A new property <a href="#Property:dataset_spatialresolutionm">dcat:spatialResolutionM</a> added to support description of the spatial resolution of datasets and distributions. A new class <a href="#Class:measure">dcat:Measure</a> is provided for its value. See <a href="https://github.com/w3c/dxwg/issues/84">Issue #84</a>
</li>

<li>
@@ -362,13 +362,13 @@ dcat:Distribution
μέσω API ή μέσω μίας ιστοσελίδας. Η χρήση της ιδιότητας dcat:downloadURL δείχνει μόνο άμεσα μεταφορτώσιμες διανομές."""@el ;
skos:scopeNote "これは、データセットの一般的な利用可能性を表わし、データの実際のアクセス方式に関する情報(つまり、直接ダウンロードなのか、APIなのか、ウェブページを介したものなのか)を意味しません。dcat:downloadURLプロパティーの使用は、直接ダウンロード可能な配信を意味します。"@ja ;
.
dcat:Measure
rdf:type owl:Class ;
rdfs:comment "A quantity value expressed as a scaled number" ;
rdfs:label "Measure" ;
skos:changeNote "New class in this revision" ;
skos:editorialNote "Status: Class accepted by DCAT revision team, but details of definition and constraints not yet resolved." ;
.
#dcat:Measure
# rdf:type owl:Class ;
# rdfs:comment "A quantity value expressed as a scaled number" ;
# rdfs:label "Measure" ;
# skos:changeNote "New class in this revision" ;
# skos:editorialNote "Status: Class accepted by DCAT revision team, but details of definition and constraints not yet resolved." ;
#.
dcat:Relationship
rdf:type owl:Class ;
rdfs:comment "An association class for attaching additional information to a relationship between DCAT Resources" ;
@@ -470,14 +470,14 @@ dcat:accessURL
skos:scopeNote """確実にダウンロードでない場合や、ダウンロードかどうかが不明である場合は、downloadURLではなく、accessURLを用いてください。
ランディング・ページを通じてしか配信にアクセスできない場合(つまり、直接的なダウンロードURLが不明)は、配信におけるaccessURLとしてランディング・ページのリンクをコピーすべきです(SHOULD)。"""@ja ;
.
dcat:amount
rdf:type owl:DatatypeProperty ;
rdfs:label "amount" ;
rdfs:domain dcat:Measure ;
rdfs:range xsd:decimal ;
rdfs:comment "The numerical element of a quantity value." ;
skos:scopeNote "" ;
.
#dcat:amount
# rdf:type owl:DatatypeProperty ;
# rdfs:label "amount" ;
# rdfs:domain dcat:Measure ;
# rdfs:range xsd:decimal ;
# rdfs:comment "The numerical element of a quantity value." ;
# skos:scopeNote "" ;
#.
dcat:byteSize
rdf:type rdf:Property ;
rdf:type owl:DatatypeProperty ;
@@ -844,11 +844,11 @@ dcat:service
skos:changeNote "New property in this revision of DCAT" ;
skos:editorialNote "Status: Property accepted by DCAT revision team, but details of definition and constraints not yet resolved." ;
.
dcat:spatialResolution
rdf:type owl:ObjectProperty ;
rdfs:comment "minimum spatial separation resolvable in a dataset" ;
rdfs:label "spatial resolution" ;
rdfs:range rdfs:Resource ;
dcat:spatialResolutionM
rdf:type owl:DatatypeProperty ;
rdfs:comment "minimum spatial separation resolvable in a dataset, measured in metres" ;
rdfs:label "spatial resolution (metres)" ;
rdfs:range xsd:decimal ;
skos:changeNote "New property in this revision of DCAT" ;
skos:editorialNote "Status: details of definition and constraints not yet resolved." ;
skos:editorialNote "Might appear in the description of a Dataset or a Distribution, so no domain is specified" ;
@@ -912,13 +912,13 @@ dcat:themeTaxonomy
rdfs:label "テーマ"@ja ;
rdfs:range skos:ConceptScheme ;
.
dcat:unit
rdf:type owl:ObjectProperty ;
rdfs:label "unit of measure" ;
rdfs:domain dcat:Measure ;
rdfs:comment "The scale element of a quantity value." ;
skos:scopeNote "" ;
.
#dcat:unit
# rdf:type owl:ObjectProperty ;
# rdfs:label "unit of measure" ;
# rdfs:domain dcat:Measure ;
# rdfs:comment "The scale element of a quantity value." ;
# skos:scopeNote "" ;
#.
prov:qualifiedAttribution
skos:definition "Link to an Agent having some form of responsibility for the resource" ;
skos:scopeNote """Used to link to an Agent where the nature of the relationship is known but does not match one of the standard Dublin Core properties (dct:creator, dct:publisher).

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