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Update index.html #1368

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10 changes: 4 additions & 6 deletions bp/index.html
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Expand Up @@ -946,10 +946,8 @@ <h3> XML Namespaces </h3>

<section id="spatial-things-features-and-geometry">
<h2>Spatial Things, Features and Geometry</h2>
<p>In spatial data standards from the <a href="http://www.opengeospatial.org">Open
Geospatial Consortium</a> (OGC) and the 19100 series of ISO <a>geographic information</a>
standards from <a href="http://www.isotc211.org">ISO/TC 211</a> the primary entity is the
<a>feature</a>. [[ISO-19101-1-2014]] defines a feature
<p>The <a>feature</a> is the primary entity as described in spatial data standards <a href="http://www.opengeospatial.org">Open
Geospatial Consortium</a> (OGC) and the 19100 series of <a href="http://www.isotc211.org">ISO/TC 211</a> <a>Geographic information</a>/Geomatics. [[ISO-19101-1-2014]] defines a feature
as an: “abstraction of real world phenomena”.</p>
<p>This terse definition is a little confusing, so let’s unpack it.</p>
<p>Firstly, it talks about “real world phenomena”; that’s everything from highways to
Expand All @@ -963,7 +961,7 @@ <h2>Spatial Things, Features and Geometry</h2>
everything of interest”.</p>
<p>Secondly, the definition of <a>feature</a> talks about “abstraction”. Take the example of <a
href="https://www.trinityhouse.co.uk/lighthouses-and-lightvessels/eddystone-lighthouse">Eddystone Lighthouse</a>. A helicopter pilot
might see it a “vertical obstruction” and be interested in attributes such as its height and
might see it as a “vertical obstruction” and be interested in attributes such as its height and
precise location. Whereas a sailor may see it as a “maritime navigation aid” and need
information about its light characteristic and general location. Depending on one’s set of
concerns, only a subset of the attributes of a given “real world phenomenon” are relevant.
Expand Down Expand Up @@ -1204,7 +1202,7 @@ <h2>Linked Data</h2>
[[RDF11-PRIMER]]. Yet we believe that Linked Data requires only that the formats used to
publish data support Web linking (see [[WEBARCH]] <a
href="https://www.w3.org/TR/webarch/#hypertext">section 4.4 Hypertext</a>). <a href="http://5stardata.info">5 Star Data</a> (based on [[5STAR-LOD]])
asserts only that data formats be open and non-proprietary (&#9733;&#9733;&#9733;); and
asserts only that data formats are open and non-proprietary (&#9733;&#9733;&#9733;); and
infers the need for data formats to support use of URIs as identifiers
(&#9733;&#9733;&#9733;&#9733;) and Web linking (&#9733;&#9733;&#9733;&#9733;&#9733;).</p>
<p>In fact, our approach to <a>linked data</a> is well described by an alternative 5-star scheme from [[WEB-DATA]]:</p>
Expand Down