SREQP: A Solar Radiation Extraction and Query Platform for the Production and Consumption of Linked Data from Weather Stations Sensors

Listing 1

Sample SPARQL query.

select ?quantityvalue

where {

 ?station wgs84:location "<http://dbpedia.org/resource/Barcelona>".

 ?sensor ssn:onPlatform ?station.

 ?sensor a solrad:DirectIrradiancePyranometer.

 ?measurement ssn:observedBy ?sensor.

 ?measurement ssn:observationResult ?result.

 ?result ssn:hasValue ?value.

 ?value ssn:hasQuantityValue ?quantityvalue.

 ?measurement time:hasBeginning ?beginning.

 ?beginning time:inXSDDateTime ?timedate

 FILTER (?timedate = "2015-06-19T13:00:00.00+01:00"^∧∧xsd:#dateTime>)