One of the advantages of the dwc_area:<b>Area</b> encoding, is that it creates one urn for each combination of lat, long, radius.<div><br></div><div>In practice, this is similar to one urn for each GPS reading.</div><div><br>
</div><div>An alternative way to get the same list would be a query that includes geo:lat, geo:long and radius.</div><div><br></div><div>Most people want to think of this as one thing, a point with a PointRadiusSpatialFit- type error measure.</div>
<div><br></div><div>I created this demonstration query that finds the BioBlitz observations with geo coordinates and sorts the resulting data by Observer.</div><div><br></div><div>It also allows you to pick and display different <b>Areas</b> from the list of returned records. *Note I have only 708 occurrence records with GPS coordinates.</div>
<div><br></div><div>* I still include the geo:lat and geo:long since most toolkits do not understand the proposed <a href="http://ietf.org">ietf.org</a> proposed geo standard.</div><div><br></div><div>Screenshots of the Pivot Views and a link for the query itself can be found at this <a href="http://bit.ly">bit.ly</a> bundle <a href="http://bit.ly/m6c5hI">http://bit.ly/m6c5hI</a></div>
<div><br></div><div>Here is the query <br clear="all"><br></div><div><div><font class="Apple-style-span" face="'courier new', monospace">REFIX txn: <<a href="http://lod.taxonconcept.org/ontology/txn.owl#">http://lod.taxonconcept.org/ontology/txn.owl#</a>></font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">PREFIX rdf: <<a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#">http://www.w3.org/1999/02/22-rdf-syntax-ns#</a>></font></div><div><font class="Apple-style-span" face="'courier new', monospace">PREFIX dcterms: <<a href="http://purl.org/dc/terms/">http://purl.org/dc/terms/</a>></font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">PREFIX foaf: <<a href="http://xmlns.com/foaf/0.1/">http://xmlns.com/foaf/0.1/</a>></font></div><div><font class="Apple-style-span" face="'courier new', monospace">PREFIX cc: <<a href="http://creativecommons.org/ns#">http://creativecommons.org/ns#</a>></font></div>
<div><font class="Apple-style-span" face="'courier new', monospace">PREFIX time: <<a href="http://www.w3.org/2006/time#">http://www.w3.org/2006/time#</a>></font></div><div><font class="Apple-style-span" face="'courier new', monospace">PREFIX geo: <<a href="http://www.w3.org/2003/01/geo/wgs84_pos#">http://www.w3.org/2003/01/geo/wgs84_pos#</a>></font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"><br></font></div><div><font class="Apple-style-span" face="'courier new', monospace"><br></font></div><div><font class="Apple-style-span" face="'courier new', monospace">select distinct ?s, ?o as ?image, ?class, ?order, ?family, ?sciname, ?cname, ?observer, ?lat, ?long, ?area where {</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> ?s rdf:type txn:Occurrence.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> ?s dcterms:isPartOf <<a href="http://lod.taxonconcept.org/ontology/txn.owl#TDWG2010_BioBlitz">http://lod.taxonconcept.org/ontology/txn.owl#TDWG2010_BioBlitz</a>>.</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> ?s txn:class ?class.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> ?s txn:order ?order.</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> ?s txn:family ?family.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> ?s txn:hasScientificName ?sciname.</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> ?s cc:attributionName ?observer.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> ?s geo:lat ?lat.</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> ?s geo:long ?long.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> ?s txn:occurrenceHasArea ?area.</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> optional {?s foaf:depiction ?o.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> ?s txn:commonName ?cname.</font></div>
<div><font class="Apple-style-span" face="'courier new', monospace"> }.</font></div><div><font class="Apple-style-span" face="'courier new', monospace"> }</font></div><div><font class="Apple-style-span" face="'courier new', monospace"><br>
</font></div><div><font class="Apple-style-span" face="'courier new', monospace">limit 708</font></div><div><br></div>-- Pete<br>
------------------------------------------------------------------------------------<br>Pete DeVries<br>Department of Entomology<br>University of Wisconsin - Madison<br>445 Russell Laboratories<br>1630 Linden Drive<br>Madison, WI 53706<br>
Email: <a href="mailto:pdevries@wisc.edu" target="_blank">pdevries@wisc.edu</a><br><a href="http://www.taxonconcept.org/" target="_blank">TaxonConcept</a> & <a href="http://about.geospecies.org/" target="_blank">GeoSpecies</a> Knowledge Bases<br>
A Semantic Web, <a href="http://linkeddata.org/" target="_blank">Linked Open Data</a> Project<br>--------------------------------------------------------------------------------------<br>
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